Microstructure regulation mechanism of CuW composites prepared by aluminothermic coupling with magnesiothermic reduction
CuW composites are widely used in high voltage transmission, electronic information, aerospace and other cutting-edge fields. At present, the preparation methods of CuW composites based on powder metallurgy have the defects of uneven microstructure and low density. Reducing the size of tungsten part...
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029831 |
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| author | Xin-Yu Wang Chu Cheng Yan-Shuo Feng Meng-Xin Wang Ming-Yu Li Tao Huang Ling-Ling Xiong Kai Li Zhi-He Dou Ting-An Zhang Ke-Xing Song |
| author_facet | Xin-Yu Wang Chu Cheng Yan-Shuo Feng Meng-Xin Wang Ming-Yu Li Tao Huang Ling-Ling Xiong Kai Li Zhi-He Dou Ting-An Zhang Ke-Xing Song |
| author_sort | Xin-Yu Wang |
| collection | DOAJ |
| description | CuW composites are widely used in high voltage transmission, electronic information, aerospace and other cutting-edge fields. At present, the preparation methods of CuW composites based on powder metallurgy have the defects of uneven microstructure and low density. Reducing the size of tungsten particles in the CuW composites can significantly improve the microstructure uniformity and density. In this paper, an innovative idea for regulating the microstructure of CuW composites by aluminothermic coupling with magnesiothermic reduction was proposed. The thermodynamics and dynamics of the reaction system for preparation of CuW composites by this method were studied, and the microstructure of CuW composites were systematically analysed and evaluation. The researches show that the inclusion in CuW prepared by aluminothermic reduction was Al2O3, and the inclusion in CuW prepared by aluminothermic coupling with magnesiothermic reduction was MgO·Al2O3. The addition of magnesium to the reducing agent had an obvious refining effect on the tungsten particles. The mechanism was that magnesium was converted into magnesium vapor during the rapid heating process of the system, and the gas-solid, gas-liquid-solid reaction occurred with tungsten oxide to generate smaller tungsten particles. With an increase of magnesium content, the average size of tungsten particles in the microstructure of CuW gradually decreased from 2.38 μm to 0.82 μm, and the microstructure uniformity increased from 56.26% to 76.96%. |
| format | Article |
| id | doaj-art-a88f23d6b2834dfbb458ad4cf317381a |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-a88f23d6b2834dfbb458ad4cf317381a2025-01-19T06:25:44ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013426842697Microstructure regulation mechanism of CuW composites prepared by aluminothermic coupling with magnesiothermic reductionXin-Yu Wang0Chu Cheng1Yan-Shuo Feng2Meng-Xin Wang3Ming-Yu Li4Tao Huang5Ling-Ling Xiong6Kai Li7Zhi-He Dou8Ting-An Zhang9Ke-Xing Song10School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471023, China; Henan Key Laboratory of Non-ferrous Materials Science & Processing Technology, Henan University of Science and Technology, Luoyang, 471003, China; Provincial and Ministerial Co-construction Collaborative Innovation Center of Nonferrous New Materials and Advanced Processing Technology, Luoyang, 471023, China; Corresponding author. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471023, China.School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471023, ChinaSanmenxia Nonferrous Metals Technology Development Center, Sanmenxia, 4472100, ChinaHenan Pinggao Electric Co., LTD, Pingdingshan, 467000, ChinaKey Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of Education, Northeastern University, Shenyang, 110819, ChinaKey Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of Education, Northeastern University, Shenyang, 110819, ChinaHenan Key Laboratory of Advanced Conductor Materials, Institute of Materials, Henan Academy of Sciences, Zhengzhou, 450002, China; Corresponding author. Henan Key Laboratory of Advanced Conductor Materials, Institute of Materials, Henan Academy of Sciences, Zhengzhou, 450002, China.CuW composites are widely used in high voltage transmission, electronic information, aerospace and other cutting-edge fields. At present, the preparation methods of CuW composites based on powder metallurgy have the defects of uneven microstructure and low density. Reducing the size of tungsten particles in the CuW composites can significantly improve the microstructure uniformity and density. In this paper, an innovative idea for regulating the microstructure of CuW composites by aluminothermic coupling with magnesiothermic reduction was proposed. The thermodynamics and dynamics of the reaction system for preparation of CuW composites by this method were studied, and the microstructure of CuW composites were systematically analysed and evaluation. The researches show that the inclusion in CuW prepared by aluminothermic reduction was Al2O3, and the inclusion in CuW prepared by aluminothermic coupling with magnesiothermic reduction was MgO·Al2O3. The addition of magnesium to the reducing agent had an obvious refining effect on the tungsten particles. The mechanism was that magnesium was converted into magnesium vapor during the rapid heating process of the system, and the gas-solid, gas-liquid-solid reaction occurred with tungsten oxide to generate smaller tungsten particles. With an increase of magnesium content, the average size of tungsten particles in the microstructure of CuW gradually decreased from 2.38 μm to 0.82 μm, and the microstructure uniformity increased from 56.26% to 76.96%.http://www.sciencedirect.com/science/article/pii/S2238785424029831Copper alloyAluminothermic reductionTungsten particleUniformity |
| spellingShingle | Xin-Yu Wang Chu Cheng Yan-Shuo Feng Meng-Xin Wang Ming-Yu Li Tao Huang Ling-Ling Xiong Kai Li Zhi-He Dou Ting-An Zhang Ke-Xing Song Microstructure regulation mechanism of CuW composites prepared by aluminothermic coupling with magnesiothermic reduction Journal of Materials Research and Technology Copper alloy Aluminothermic reduction Tungsten particle Uniformity |
| title | Microstructure regulation mechanism of CuW composites prepared by aluminothermic coupling with magnesiothermic reduction |
| title_full | Microstructure regulation mechanism of CuW composites prepared by aluminothermic coupling with magnesiothermic reduction |
| title_fullStr | Microstructure regulation mechanism of CuW composites prepared by aluminothermic coupling with magnesiothermic reduction |
| title_full_unstemmed | Microstructure regulation mechanism of CuW composites prepared by aluminothermic coupling with magnesiothermic reduction |
| title_short | Microstructure regulation mechanism of CuW composites prepared by aluminothermic coupling with magnesiothermic reduction |
| title_sort | microstructure regulation mechanism of cuw composites prepared by aluminothermic coupling with magnesiothermic reduction |
| topic | Copper alloy Aluminothermic reduction Tungsten particle Uniformity |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029831 |
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