PRODUCTION OF DISPERSED NICKEL POWDER IN ELECTROCHEMICAL PROCESSING OF A RENIUM-CONTAINING HEAT-RESISTANT ALL
The article is devoted to the substantiation of the proposed technological scheme of electrochemical processing of rhenium-containing heat-resistant alloy ZhS32-VI of composition (mass %): Re - 4.0; Co - 9.3; W - 8.6; Y - 0.005; Lа - 0.005; Al - 6.0; Cr - 5.0; Tа - 4.0; Nb - 1.6; Mо - 1.1; С - 0.16;...
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| Format: | Article |
| Language: | Russian |
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MIREA - Russian Technological University
2018-12-01
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| Series: | Тонкие химические технологии |
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| Online Access: | https://www.finechem-mirea.ru/jour/article/view/180 |
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| author | O. V. Chernyshova G. A. Usoltseva E. G. Baykonurov D. V. Drobot |
| author_facet | O. V. Chernyshova G. A. Usoltseva E. G. Baykonurov D. V. Drobot |
| author_sort | O. V. Chernyshova |
| collection | DOAJ |
| description | The article is devoted to the substantiation of the proposed technological scheme of electrochemical processing of rhenium-containing heat-resistant alloy ZhS32-VI of composition (mass %): Re - 4.0; Co - 9.3; W - 8.6; Y - 0.005; Lа - 0.005; Al - 6.0; Cr - 5.0; Tа - 4.0; Nb - 1.6; Mо - 1.1; С - 0.16; B - 0.15; Cе - 0.025, Ni - 60.05 to obtain nickel-containing cathode deposits. The results of studying the composition, surface morphology and granulometric analysis of cathodic precipitates obtained during the electrochemical processing of the spent heat-resistant alloy ZhS32-VI with the use of acid electrolytes are presented. Anodic dissolution of ZhS32-VI was performed in the galvanostatic mode. The effect of the electrolyte composition on the process parameters (current yield, distribution of alloy components between the electrolysis products, particle size distribution of the cathode product), electrochemical processing of this alloy were established. It is shown that depending on the nature of the electrolyte, cathode deposits of different chemical and phase composition can be obtained. They differ in the size and morphology of the surface. It has been established that the value of the cathode precipitate grains obtained in acid electrolytes is almost the same: 99% of the cathode precipitate grains are in the range from 0.04 to 0.60 μm. The main difference is a slight increase in the amount of fine fraction when sulphosalicylic acid is added to the electrolyte. All the cathodic deposits obtained have a dendritic structure, the development of which depends on the nature of the electrolyte, the precipitates obtained with the use of a nitrate electrolyte having the most developed structure and the smallest particle size. |
| format | Article |
| id | doaj-art-d173592bb9ea4660badddc5d87493b80 |
| institution | Kabale University |
| issn | 2410-6593 2686-7575 |
| language | Russian |
| publishDate | 2018-12-01 |
| publisher | MIREA - Russian Technological University |
| record_format | Article |
| series | Тонкие химические технологии |
| spelling | doaj-art-d173592bb9ea4660badddc5d87493b802025-08-20T03:56:32ZrusMIREA - Russian Technological UniversityТонкие химические технологии2410-65932686-75752018-12-01136697810.32362/2410-6593-2018-13-6-69-78180PRODUCTION OF DISPERSED NICKEL POWDER IN ELECTROCHEMICAL PROCESSING OF A RENIUM-CONTAINING HEAT-RESISTANT ALLO. V. Chernyshova0G. A. Usoltseva1E. G. Baykonurov2D. V. Drobot3MIREA - Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)Satbayev University, O. Baykonurov Institute of Mining and Metallurgy Satbayev UniversitySatbayev University, O. Baykonurov Institute of Mining and Metallurgy Satbayev UniversityMIREA - Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)The article is devoted to the substantiation of the proposed technological scheme of electrochemical processing of rhenium-containing heat-resistant alloy ZhS32-VI of composition (mass %): Re - 4.0; Co - 9.3; W - 8.6; Y - 0.005; Lа - 0.005; Al - 6.0; Cr - 5.0; Tа - 4.0; Nb - 1.6; Mо - 1.1; С - 0.16; B - 0.15; Cе - 0.025, Ni - 60.05 to obtain nickel-containing cathode deposits. The results of studying the composition, surface morphology and granulometric analysis of cathodic precipitates obtained during the electrochemical processing of the spent heat-resistant alloy ZhS32-VI with the use of acid electrolytes are presented. Anodic dissolution of ZhS32-VI was performed in the galvanostatic mode. The effect of the electrolyte composition on the process parameters (current yield, distribution of alloy components between the electrolysis products, particle size distribution of the cathode product), electrochemical processing of this alloy were established. It is shown that depending on the nature of the electrolyte, cathode deposits of different chemical and phase composition can be obtained. They differ in the size and morphology of the surface. It has been established that the value of the cathode precipitate grains obtained in acid electrolytes is almost the same: 99% of the cathode precipitate grains are in the range from 0.04 to 0.60 μm. The main difference is a slight increase in the amount of fine fraction when sulphosalicylic acid is added to the electrolyte. All the cathodic deposits obtained have a dendritic structure, the development of which depends on the nature of the electrolyte, the precipitates obtained with the use of a nitrate electrolyte having the most developed structure and the smallest particle size.https://www.finechem-mirea.ru/jour/article/view/180high-temperature alloyelectrochemical processinganode slurryacid electrolytesulfosalicylic acidnickel-containing concentrate |
| spellingShingle | O. V. Chernyshova G. A. Usoltseva E. G. Baykonurov D. V. Drobot PRODUCTION OF DISPERSED NICKEL POWDER IN ELECTROCHEMICAL PROCESSING OF A RENIUM-CONTAINING HEAT-RESISTANT ALL Тонкие химические технологии high-temperature alloy electrochemical processing anode slurry acid electrolyte sulfosalicylic acid nickel-containing concentrate |
| title | PRODUCTION OF DISPERSED NICKEL POWDER IN ELECTROCHEMICAL PROCESSING OF A RENIUM-CONTAINING HEAT-RESISTANT ALL |
| title_full | PRODUCTION OF DISPERSED NICKEL POWDER IN ELECTROCHEMICAL PROCESSING OF A RENIUM-CONTAINING HEAT-RESISTANT ALL |
| title_fullStr | PRODUCTION OF DISPERSED NICKEL POWDER IN ELECTROCHEMICAL PROCESSING OF A RENIUM-CONTAINING HEAT-RESISTANT ALL |
| title_full_unstemmed | PRODUCTION OF DISPERSED NICKEL POWDER IN ELECTROCHEMICAL PROCESSING OF A RENIUM-CONTAINING HEAT-RESISTANT ALL |
| title_short | PRODUCTION OF DISPERSED NICKEL POWDER IN ELECTROCHEMICAL PROCESSING OF A RENIUM-CONTAINING HEAT-RESISTANT ALL |
| title_sort | production of dispersed nickel powder in electrochemical processing of a renium containing heat resistant all |
| topic | high-temperature alloy electrochemical processing anode slurry acid electrolyte sulfosalicylic acid nickel-containing concentrate |
| url | https://www.finechem-mirea.ru/jour/article/view/180 |
| work_keys_str_mv | AT ovchernyshova productionofdispersednickelpowderinelectrochemicalprocessingofareniumcontainingheatresistantall AT gausoltseva productionofdispersednickelpowderinelectrochemicalprocessingofareniumcontainingheatresistantall AT egbaykonurov productionofdispersednickelpowderinelectrochemicalprocessingofareniumcontainingheatresistantall AT dvdrobot productionofdispersednickelpowderinelectrochemicalprocessingofareniumcontainingheatresistantall |