База данных: Статьи
Страница 3, Результатов: 39
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21.
Подробнее
24
K21
Karmanovskaya, N. V.
Public environmental monitoring of the state of snowpack in norilsk. [Текст] / N. V. Karmanovskaya, O. V. Nosova, A. V. Kaverzin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 95-103
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
precipitation -- industrial area -- melt water -- chemical characteristics
Аннотация: It is considered that Norilsk ranks second in terms of atmospheric contamination. Industrial enterprises annually emit large amounts of sulphur dioxide, phenols, and heavy metal particles. The city is located within the Far North and is distinguished by the harsh climate of the subarctic type. The snow cover can lie from 244 to 277 days. Snow is a good sorbent; therefore, the snow cover accumulates solid and gaseous pollutants that enter it from the atmosphere with precipitation or are absorbed from it. The purpose of this study was to analyse the snow cover in the Norilsk industrial region and assess the state of atmospheric air in the winter. To achieve this goal, it is necessary to solve the following tasks: conduct a literature review on a given topic; take samples of snow in various industrial districts of Norilsk; study the dependence of the qualitative characteristics of snow on the sampling site; draw conclusions on the quality of snowpack in different areas of the industrial districts of Norilsk. In the course of the study, the following methods were used: organoleptic, visual, methods for determining water transparency, titrimetric analysis, etc. Heavy metal ions and sulphate ions were not detected in the thawed snow, so no industrial gas pollution was noted in the residential area. Most of the particulate contamination was caused by slagging of roads to improve vehicle traction.
Держатели документа:
WKU
Доп.точки доступа:
Nosova, O. V.
Kaverzin, A. V.
K21
Karmanovskaya, N. V.
Public environmental monitoring of the state of snowpack in norilsk. [Текст] / N. V. Karmanovskaya, O. V. Nosova, A. V. Kaverzin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 95-103
Рубрики: chemistry
Кл.слова (ненормированные):
precipitation -- industrial area -- melt water -- chemical characteristics
Аннотация: It is considered that Norilsk ranks second in terms of atmospheric contamination. Industrial enterprises annually emit large amounts of sulphur dioxide, phenols, and heavy metal particles. The city is located within the Far North and is distinguished by the harsh climate of the subarctic type. The snow cover can lie from 244 to 277 days. Snow is a good sorbent; therefore, the snow cover accumulates solid and gaseous pollutants that enter it from the atmosphere with precipitation or are absorbed from it. The purpose of this study was to analyse the snow cover in the Norilsk industrial region and assess the state of atmospheric air in the winter. To achieve this goal, it is necessary to solve the following tasks: conduct a literature review on a given topic; take samples of snow in various industrial districts of Norilsk; study the dependence of the qualitative characteristics of snow on the sampling site; draw conclusions on the quality of snowpack in different areas of the industrial districts of Norilsk. In the course of the study, the following methods were used: organoleptic, visual, methods for determining water transparency, titrimetric analysis, etc. Heavy metal ions and sulphate ions were not detected in the thawed snow, so no industrial gas pollution was noted in the residential area. Most of the particulate contamination was caused by slagging of roads to improve vehicle traction.
Держатели документа:
WKU
Доп.точки доступа:
Nosova, O. V.
Kaverzin, A. V.
22.
Подробнее
35
K21
Karmanovskaya , N. V.
Public environmental monitoring of drinking water quality in the city of Norilsk. [Текст] / N. V. Karmanovskaya // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 104-111
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
ecological situation -- industrial city -- water supply -- public utilities
Аннотация: According to UN estimates, the shortage of safe drinking water can become one of the most acute and pressing problems. The specificity of this problem for Russia is not a shortage of water resources, but their pollution and ongoing degradation of water bodies. The quality of water is understood as the totality of its properties associated with the nature and concentration of impurities in the water. Water analysis is the only tool for monitoring its condition and properties. During the experiment, a team of researchers took samples of drinking water from the water supply network in various districts of the Norilsk industrial region, studied the dependence of the quality characteristics of water on the location and sampling method. Based on the findings, conclusions on the quality of drinking water were drawn. During the experiment, the authors found that in terms of organoleptic indicators, drinking water in all areas of the NIR meets the requirements of Sanitary Rules and Regulations and GOST. Taking samples at three control points of the Norilsk industrial region, it has been proven that the water is soft and its salt content is mainly due to the presence of hardness salts. Having made the necessary analyses, the authors found that the presence of microorganisms in the water supply network of the NIR is not significant, the permanganate oxidisability indicator does not exceed the requirements of Sanitary Rules and Regulations.
Держатели документа:
WKU
K21
Karmanovskaya , N. V.
Public environmental monitoring of drinking water quality in the city of Norilsk. [Текст] / N. V. Karmanovskaya // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 104-111
Рубрики: chemical Technology
Кл.слова (ненормированные):
ecological situation -- industrial city -- water supply -- public utilities
Аннотация: According to UN estimates, the shortage of safe drinking water can become one of the most acute and pressing problems. The specificity of this problem for Russia is not a shortage of water resources, but their pollution and ongoing degradation of water bodies. The quality of water is understood as the totality of its properties associated with the nature and concentration of impurities in the water. Water analysis is the only tool for monitoring its condition and properties. During the experiment, a team of researchers took samples of drinking water from the water supply network in various districts of the Norilsk industrial region, studied the dependence of the quality characteristics of water on the location and sampling method. Based on the findings, conclusions on the quality of drinking water were drawn. During the experiment, the authors found that in terms of organoleptic indicators, drinking water in all areas of the NIR meets the requirements of Sanitary Rules and Regulations and GOST. Taking samples at three control points of the Norilsk industrial region, it has been proven that the water is soft and its salt content is mainly due to the presence of hardness salts. Having made the necessary analyses, the authors found that the presence of microorganisms in the water supply network of the NIR is not significant, the permanganate oxidisability indicator does not exceed the requirements of Sanitary Rules and Regulations.
Держатели документа:
WKU
23.
Подробнее
39.311
Y46
Yessentay, D. E.
Substantiation of application of anti-ice chemical reagents on automobile roads with cement concrete covering. [Текст] / D. E. Yessentay // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 112-118
ББК 39.311
Рубрики: Автомобильные дороги
Кл.слова (ненормированные):
slippery -- peeling -- chipping -- cement concrete strength -- deicing chemical reagent -- concentration of solutions
Аннотация: This article discusses the theoretical basis for the destruction of the crystal structure of snow and ice formations from the influence of chemical reagents. They established a natural dependence of the freezing force of snow and ice formations on the impact of various types of salt solutions. Also, laboratory studies have established the effect of the concentration of salt solutions on the loss of strength of cement concrete over time.
Держатели документа:
WKU
Доп.точки доступа:
Kiyalbaev, A. K.
Kiyalbay, S. N.
Borisуuk , N. V.
Y46
Yessentay, D. E.
Substantiation of application of anti-ice chemical reagents on automobile roads with cement concrete covering. [Текст] / D. E. Yessentay // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 112-118
Рубрики: Автомобильные дороги
Кл.слова (ненормированные):
slippery -- peeling -- chipping -- cement concrete strength -- deicing chemical reagent -- concentration of solutions
Аннотация: This article discusses the theoretical basis for the destruction of the crystal structure of snow and ice formations from the influence of chemical reagents. They established a natural dependence of the freezing force of snow and ice formations on the impact of various types of salt solutions. Also, laboratory studies have established the effect of the concentration of salt solutions on the loss of strength of cement concrete over time.
Держатели документа:
WKU
Доп.точки доступа:
Kiyalbaev, A. K.
Kiyalbay, S. N.
Borisуuk , N. V.
24.
Подробнее
24
A99
Azimbayeva, G. E.
Gas Chromatographic analysis of the chemical composition of ethyl alcohol obtained from plants of the genus asteraceae. [Текст] / G. E. Azimbayeva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 6-13
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
Ethyl alcohol -- plants of the genus Asteraceae -- gas chromatographic method -- chromatogram -- chemical composition
Аннотация: The article discusses the methods of obtaining and application of ethyl alcohol. The results of the analysis of the chemical composition of ethyl alcohol obtained from plants of the genus Asteraceae are presented. As a result of the study, alcohols were obtained in different concentrations. The chemical composition of ethyl alcohol was determined by gas chromatography. The impurity composition of ethyl alcohol obtained from various types of raw materials is also shown.
Держатели документа:
WKU
Доп.точки доступа:
Kamysbayeva, A.K.
Bakibaev, Abdigali
A99
Azimbayeva, G. E.
Gas Chromatographic analysis of the chemical composition of ethyl alcohol obtained from plants of the genus asteraceae. [Текст] / G. E. Azimbayeva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 6-13
Рубрики: chemistry
Кл.слова (ненормированные):
Ethyl alcohol -- plants of the genus Asteraceae -- gas chromatographic method -- chromatogram -- chemical composition
Аннотация: The article discusses the methods of obtaining and application of ethyl alcohol. The results of the analysis of the chemical composition of ethyl alcohol obtained from plants of the genus Asteraceae are presented. As a result of the study, alcohols were obtained in different concentrations. The chemical composition of ethyl alcohol was determined by gas chromatography. The impurity composition of ethyl alcohol obtained from various types of raw materials is also shown.
Держатели документа:
WKU
Доп.точки доступа:
Kamysbayeva, A.K.
Bakibaev, Abdigali
25.
Подробнее
4
P93
Productivity and accumulation of heavy metalsin the grain of various genotypes of spring barley under conditions of soil contamination with copper and lead [Текст] / R. A. Alybayeva, M. N. Kalmakhan, Z. A. Inelova [и др.] // Доклады национальной академии наук Республики Казахстан. - 2021. - №1. - Р. 96-103
ББК 4
Рубрики: Сельское и лесное хозяйство
Кл.слова (ненормированные):
тяжелый металл -- зерно ячменя -- фитостабилизация -- генотип
Аннотация: Загрязнение среды, особенно химическими веществами, является одним из самых сильных факторов нарушения компонентов биосферы. В настоящее время в биосферу поступает множество загрязнителей. Среди них – значительные тяжелые металлы. Среди химических элементов наиболее токсичными являются тяжелые металлы. Опасность повышения содержания тяжелых металлов в почве и тяжелых металлов в атмосфере связана с активными всасываниями и скоплением растений, которые не только отрицательно влияют на их активные действия, но и угрожают здоровью человека и животных. Опасность металлов заключается в том, что они обладают кумулятивным действием и сохраняют эти токсичные свойства в течение длительного времени. В связи с задачей изучения генофонда культурных растений в условиях техногенного загрязнения было исследование металлостойкости сортов ячменя с целью выявления перспективных форм для выращивания в Восточно-Казахстанском регионе, а также селекционных доноров, собирающих минимальное количество загрязнителей. Полученные результаты позволяют предложить устойчивых к тяжелым металлам доноров, которые могут быть использованы в племенных и генетических исследованиях. Ячмень является концентрированным продуктом для животных, так как состав богат крахмалом и белком. Семена ячменя, наряду с аминокислотами, белок, лизин и триптофан, которые не могут быть заменены другим веществом, сохранены лучше, чем в других культурах. Ячмень по Казахстану занимает второе место после пшеницы. Восточно-Казахстанский регион благоприятен и востребован для выращивания ячменя. Однако поражение сосудов тяжелым металлом повлияло на ввод продукции в действие.
Держатели документа:
ЗКУ
Доп.точки доступа:
Alybayeva, R.A.
Kalmakhan, M.N.
Inelova, Z.A.
Atabayeva, S.D.
Akhambayeva, N.S.
Autkhanova, N.M.
P93
Productivity and accumulation of heavy metalsin the grain of various genotypes of spring barley under conditions of soil contamination with copper and lead [Текст] / R. A. Alybayeva, M. N. Kalmakhan, Z. A. Inelova [и др.] // Доклады национальной академии наук Республики Казахстан. - 2021. - №1. - Р. 96-103
Рубрики: Сельское и лесное хозяйство
Кл.слова (ненормированные):
тяжелый металл -- зерно ячменя -- фитостабилизация -- генотип
Аннотация: Загрязнение среды, особенно химическими веществами, является одним из самых сильных факторов нарушения компонентов биосферы. В настоящее время в биосферу поступает множество загрязнителей. Среди них – значительные тяжелые металлы. Среди химических элементов наиболее токсичными являются тяжелые металлы. Опасность повышения содержания тяжелых металлов в почве и тяжелых металлов в атмосфере связана с активными всасываниями и скоплением растений, которые не только отрицательно влияют на их активные действия, но и угрожают здоровью человека и животных. Опасность металлов заключается в том, что они обладают кумулятивным действием и сохраняют эти токсичные свойства в течение длительного времени. В связи с задачей изучения генофонда культурных растений в условиях техногенного загрязнения было исследование металлостойкости сортов ячменя с целью выявления перспективных форм для выращивания в Восточно-Казахстанском регионе, а также селекционных доноров, собирающих минимальное количество загрязнителей. Полученные результаты позволяют предложить устойчивых к тяжелым металлам доноров, которые могут быть использованы в племенных и генетических исследованиях. Ячмень является концентрированным продуктом для животных, так как состав богат крахмалом и белком. Семена ячменя, наряду с аминокислотами, белок, лизин и триптофан, которые не могут быть заменены другим веществом, сохранены лучше, чем в других культурах. Ячмень по Казахстану занимает второе место после пшеницы. Восточно-Казахстанский регион благоприятен и востребован для выращивания ячменя. Однако поражение сосудов тяжелым металлом повлияло на ввод продукции в действие.
Держатели документа:
ЗКУ
Доп.точки доступа:
Alybayeva, R.A.
Kalmakhan, M.N.
Inelova, Z.A.
Atabayeva, S.D.
Akhambayeva, N.S.
Autkhanova, N.M.
26.
Подробнее
35.51
T76
Тorebekov, А. К.
Determination of rem in Uranium ores of the Shu-Sarysu uranium-ore province by inductively coupled plasma atomic emission spectrometry. [Текст] / А. К. Тorebekov, M. S. Kalmakhanova, B. K. Massalimova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 29-35
ББК 35.51
Рубрики: Технология топлива
Кл.слова (ненормированные):
uranium ore -- internal standard -- elemental analysis -- ICP-NPP
Аннотация: This article discusses the features of the determination of elements in uranium ores of the Shusarysu uranium-ore province by inductively coupled plasma atomic emission spectrometry in comparison with the ore standard of Ore Research & Exploration (Australia). A multi-stage method of sample preparation for measurement is considered. The existing and developed methods for determining the elemental composition of uranium ores are focused, as a rule, on the determination of specific elements using regulated analysis procedures. However, during routine analysis, we need to quickly and efficiently determine a larger list of elements available with one instrumental method. Various methods are used to obtain multielement analysis, among which mass spectrometry and inductively coupled plasma atomic emission analysis are most popular due to their high performance and low detection limits. The listed methods work with solutions, therefore, it is necessary to pay great attention to sample preparation and instrument calibration.
Держатели документа:
WKU
Доп.точки доступа:
Kalmakhanova, M. S.
Massalimova, B. K.
T76
Тorebekov, А. К.
Determination of rem in Uranium ores of the Shu-Sarysu uranium-ore province by inductively coupled plasma atomic emission spectrometry. [Текст] / А. К. Тorebekov, M. S. Kalmakhanova, B. K. Massalimova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 29-35
Рубрики: Технология топлива
Кл.слова (ненормированные):
uranium ore -- internal standard -- elemental analysis -- ICP-NPP
Аннотация: This article discusses the features of the determination of elements in uranium ores of the Shusarysu uranium-ore province by inductively coupled plasma atomic emission spectrometry in comparison with the ore standard of Ore Research & Exploration (Australia). A multi-stage method of sample preparation for measurement is considered. The existing and developed methods for determining the elemental composition of uranium ores are focused, as a rule, on the determination of specific elements using regulated analysis procedures. However, during routine analysis, we need to quickly and efficiently determine a larger list of elements available with one instrumental method. Various methods are used to obtain multielement analysis, among which mass spectrometry and inductively coupled plasma atomic emission analysis are most popular due to their high performance and low detection limits. The listed methods work with solutions, therefore, it is necessary to pay great attention to sample preparation and instrument calibration.
Держатели документа:
WKU
Доп.точки доступа:
Kalmakhanova, M. S.
Massalimova, B. K.
27.
Подробнее
26.31
A28
Aimbetova, I.O.
Mineral and petrographic analysis of clay raw materials of the turkestan region used as additives to thermal insulation materials. [Текст] / I.O. Aimbetova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 110-119
ББК 26.31
Рубрики: Минералогия
Кл.слова (ненормированные):
industrial production -- natural raw materials -- recycling industrial waste -- analysis -- thermal insulation materials
Аннотация: The article discusses the contributes to the development of a new focus on the use of various mixtures of natural raw materials and waste in the construction materials industry as a strategically important direction for solving the environmental burden and recycling industrial waste with a feasibility study that improves the state of the environment.
Держатели документа:
WKU
Доп.точки доступа:
Kurbaniyazov, S.
A28
Aimbetova, I.O.
Mineral and petrographic analysis of clay raw materials of the turkestan region used as additives to thermal insulation materials. [Текст] / I.O. Aimbetova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №2. - P. 110-119
Рубрики: Минералогия
Кл.слова (ненормированные):
industrial production -- natural raw materials -- recycling industrial waste -- analysis -- thermal insulation materials
Аннотация: The article discusses the contributes to the development of a new focus on the use of various mixtures of natural raw materials and waste in the construction materials industry as a strategically important direction for solving the environmental burden and recycling industrial waste with a feasibility study that improves the state of the environment.
Держатели документа:
WKU
Доп.точки доступа:
Kurbaniyazov, S.
28.
Подробнее
35
R18
Rakhimberlinova, Zh. B.
Chemical activation of the surface of the burnt rock by various modifiers. [Текст] / Zh. B. Rakhimberlinova, I. V. Kulakov, A.Zh. Alimzhanova, M. М. Mussirepov, N. E. Nakypbekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 81-86
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
oxidized coals -- humic acids -- inorganic surfaces -- burnt rock -- host rock -- modifiers
Аннотация: This article presents the results of experimental studies of the process of grafting humic acids and their functional derivatives on modified and unmodified surfaces of burnt rock. It is shown that the inoculation of humic acids on inorganic carriers is more successful with the preliminary activation of the surface of burnt rocks.
Держатели документа:
WKU
Доп.точки доступа:
Kulakov, I.V.
Alimzhanova, A.Zh.
Mussirepov, M.М.
Nakypbekova, N.E.
R18
Rakhimberlinova, Zh. B.
Chemical activation of the surface of the burnt rock by various modifiers. [Текст] / Zh. B. Rakhimberlinova, I. V. Kulakov, A.Zh. Alimzhanova, M. М. Mussirepov, N. E. Nakypbekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 81-86
Рубрики: chemical Technology
Кл.слова (ненормированные):
oxidized coals -- humic acids -- inorganic surfaces -- burnt rock -- host rock -- modifiers
Аннотация: This article presents the results of experimental studies of the process of grafting humic acids and their functional derivatives on modified and unmodified surfaces of burnt rock. It is shown that the inoculation of humic acids on inorganic carriers is more successful with the preliminary activation of the surface of burnt rocks.
Держатели документа:
WKU
Доп.точки доступа:
Kulakov, I.V.
Alimzhanova, A.Zh.
Mussirepov, M.М.
Nakypbekova, N.E.
29.
Подробнее
26.3
A36
Alipova, B.
Creation of mathematical and computer models of the dynamics of flame propagation of air-suspended solids in various rocks using Matlab environment [Текст] / B. Alipova, B. Sapargaliyeva // Известия Национальной Академии наук Республики Казахстан. - 2021. - №1. - Р. 29-34
ББК 26.3
Рубрики: Геология
Кл.слова (ненормированные):
MATLAB -- графический интерфейс -- распространение пламени -- динамический CLFP -- воздух-взвешенные вещества -- уравнение Антуана -- скалы
Аннотация: Распространение переходных, взвешенных в воздухе твердых веществ в вентилируемой взрывной камере численно исследуется с помощью динамической формулировки для концентрационного предела распространения пламени (CLFP) в среде GUI MATLAB. Геомеханика моделируется одностадийной общей реакцией, которая имитирует реакцию стехиометрического пропан – воздух– взвешенные твердые вещества. Моделирование CLFP в модели скорости реакции численно используется с математическими моделями на основе уравнения Антуана. Это основано на эмпирической корреляции флуктуаций скорости и реализовано в виде интерфейса с данными ввода-вывода с графической реализацией. Компьютерное моделирование показало, что динамические модели CLFP дают превосходные результаты в качестве общей реализации физического процесса распространения пламени и могут быть использованы для различных горных пород (например, гранита, известняка, песчаника и др.).
Держатели документа:
ЗКУ
Доп.точки доступа:
Sapargaliyeva, B.
A36
Alipova, B.
Creation of mathematical and computer models of the dynamics of flame propagation of air-suspended solids in various rocks using Matlab environment [Текст] / B. Alipova, B. Sapargaliyeva // Известия Национальной Академии наук Республики Казахстан. - 2021. - №1. - Р. 29-34
Рубрики: Геология
Кл.слова (ненормированные):
MATLAB -- графический интерфейс -- распространение пламени -- динамический CLFP -- воздух-взвешенные вещества -- уравнение Антуана -- скалы
Аннотация: Распространение переходных, взвешенных в воздухе твердых веществ в вентилируемой взрывной камере численно исследуется с помощью динамической формулировки для концентрационного предела распространения пламени (CLFP) в среде GUI MATLAB. Геомеханика моделируется одностадийной общей реакцией, которая имитирует реакцию стехиометрического пропан – воздух– взвешенные твердые вещества. Моделирование CLFP в модели скорости реакции численно используется с математическими моделями на основе уравнения Антуана. Это основано на эмпирической корреляции флуктуаций скорости и реализовано в виде интерфейса с данными ввода-вывода с графической реализацией. Компьютерное моделирование показало, что динамические модели CLFP дают превосходные результаты в качестве общей реализации физического процесса распространения пламени и могут быть использованы для различных горных пород (например, гранита, известняка, песчаника и др.).
Держатели документа:
ЗКУ
Доп.точки доступа:
Sapargaliyeva, B.
30.
Подробнее
35
V99
Vysotskaya, N. A.
Some features of electrodeposition of metals from electrolytes with surfactants. [Текст] / N. A. Vysotskaya, B.N. Kabylbekova, D. D. Asylbekova, R. S. Spabekova, E. G. Lukin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 99-103
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
anticorrosive properties -- electroplating -- surfactants -- thiourea derivatives
Аннотация: For a long time, the use of various surfactants in the composition of simple electrolytes by researchers to improve the quality of metal coatings with cadmium and zinc has been an urgent task.Surfactants contribute to the grinding of the coating structure, the elimination of their porosity and the appearance of anti-corrosion properties of coatings. For example, cadmium electroplated coatings require corrosion resistance, since they are operated in tropical climates, in underground tunnels. Zinc coatings are widely used in building structures and roofing, on electrified railways and high-voltage power lines, in the mining industry and water pipes, as well as for galvanizing the body material in modern all-terrain vehicles to pass in hard-to-reach places without being subjected to corrosion.The object of our research is the process of electrodeposition of cadmium and zinc from simple acidic electrolytes with surfactants, which are thiourea derivatives of dialkyl-phosphorous acids in the current density range of 0.5-3.5 A /dm2, at room temperature. To confirm the quality of the obtained electroplating, we used a JSM-6490LV scanning electron microscope with INSA Energu energy–dispersion microanalysis and HKL-Basicc structural analysis systems with a useful magnification of 300000.
Держатели документа:
WKU
Доп.точки доступа:
Kabylbekova, B.N.
Asylbekova, D.D.
Spabekova, R.S.
Lukin, E.G.
V99
Vysotskaya, N. A.
Some features of electrodeposition of metals from electrolytes with surfactants. [Текст] / N. A. Vysotskaya, B.N. Kabylbekova, D. D. Asylbekova, R. S. Spabekova, E. G. Lukin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №3. - P. 99-103
Рубрики: chemical Technology
Кл.слова (ненормированные):
anticorrosive properties -- electroplating -- surfactants -- thiourea derivatives
Аннотация: For a long time, the use of various surfactants in the composition of simple electrolytes by researchers to improve the quality of metal coatings with cadmium and zinc has been an urgent task.Surfactants contribute to the grinding of the coating structure, the elimination of their porosity and the appearance of anti-corrosion properties of coatings. For example, cadmium electroplated coatings require corrosion resistance, since they are operated in tropical climates, in underground tunnels. Zinc coatings are widely used in building structures and roofing, on electrified railways and high-voltage power lines, in the mining industry and water pipes, as well as for galvanizing the body material in modern all-terrain vehicles to pass in hard-to-reach places without being subjected to corrosion.The object of our research is the process of electrodeposition of cadmium and zinc from simple acidic electrolytes with surfactants, which are thiourea derivatives of dialkyl-phosphorous acids in the current density range of 0.5-3.5 A /dm2, at room temperature. To confirm the quality of the obtained electroplating, we used a JSM-6490LV scanning electron microscope with INSA Energu energy–dispersion microanalysis and HKL-Basicc structural analysis systems with a useful magnification of 300000.
Держатели документа:
WKU
Доп.точки доступа:
Kabylbekova, B.N.
Asylbekova, D.D.
Spabekova, R.S.
Lukin, E.G.
Страница 3, Результатов: 39