Study on Preparation of Tungsten Powders by Reduction with Different Tungsten Oxides and their Characteristics AITranslate
Abstract AITranslate
Tungsten powders were prepared by hydrogen reduction with chromium-doped tungsten oxide, purple tungsten oxide and yellow tungsten oxide as raw materials at different reaction temperatures.The phase and microstructure of tungsten powders prepared by reduction of different tungsten oxides were analyzed by XRD and SEM,and the influence of chromium doping on the reduction process of tungsten oxide was explored.The results show that under the same reduction conditions, purple tungsten oxide is the easiest to reduce due to its loose and breathable fine needle-like structure, and the prepared W powder has good dispersibility, fine particle size and uniform distribution.Chromium-doped tungsten oxide is the most difficult to reduce due to the inhibitory effect of Cr2O3,and the prepared W powder has a large number of fine-grained aggregates, with poor powder particle size uniformity and small average particle size.The reduction difficulty of yellow tungsten oxide is between purple tungsten oxide and chromium-doped tungsten oxide due to its dense and airtight cubic structure, and the prepared W powder has coarse particle size and serious agglomeration.
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Basic Information:
DOI：
Chinese Library Classification Number:TF123[冶金工程—粉末冶金]
Citation Information:
Tungsten powders were prepared by hydrogen reduction with chromium-doped tungsten oxide, purple tungsten oxide and yellow tungsten oxide as raw materials at different reaction temperatures.The phase and microstructure of tungsten powders prepared by reduction of different tungsten oxides were analyzed by XRD and SEM,and the influence of chromium doping on the reduction process of tungsten oxide was explored.The results show that under the same reduction conditions, purple tungsten oxide is the easiest to reduce due to its loose and breathable fine needle-like structure, and the prepared W powder has good dispersibility, fine particle size and uniform distribution.Chromium-doped tungsten oxide is the most difficult to reduce due to the inhibitory effect of Cr2O3,and the prepared W powder has a large number of fine-grained aggregates, with poor powder particle size uniformity and small average particle size.The reduction difficulty of yellow tungsten oxide is between purple tungsten oxide and chromium-doped tungsten oxide due to its dense and airtight cubic structure, and the prepared W powder has coarse particle size and serious agglomeration.
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| GB/T 7714-2015 | [1] YANG Cheng-hui, XU Guo-zuan, LIU Ru-tiez, et al. Study on Preparation of Tungsten Powders by Reduction with Different Tungsten Oxides and their Characteristics[J]. Rare Metals and Cemented Carbides, 2022(2): 19-25. |
| MLA | [1] YANG Cheng-hui, et al., "Study on Preparation of Tungsten Powders by Reduction with Different Tungsten Oxides and their Characteristics." Rare Metals and Cemented Carbides, no. 2, 2022, pp. 19-25. |
| APA | [1] YANG Cheng-hui, XU Guo-zuan, LIU Ru-tiez, ZHANG Long-hui, & YANG Qiu-min. (2022). Study on Preparation of Tungsten Powders by Reduction with Different Tungsten Oxides and their Characteristics. Rare Metals and Cemented Carbides(2), 19-25. |
| IEEE | [1] YANG Cheng-hui, XU Guo-zuan, LIU Ru-tiez, ZHANG Long-hui, and YANG Qiu-min, "Study on Preparation of Tungsten Powders by Reduction with Different Tungsten Oxides and their Characteristics," Rare Metals and Cemented Carbides, no. 2, pp. 19-25, 2022. keywords: {tungsten oxide;chromium doping;purple tungsten oxide;yellow tungsten oxide;tungsten powder;hydrogen reduction} |