Preparation of Continuous Gradient Porous Tungsten Blank AITranslate
Abstract AITranslate
Porous tungsten blank with continuous porosity gradient was prepared via oxidation-gasification reaction between water vapor and W powder particles. The effects were investigated of W powder granularity composition,reaction temperature and time on porosity gradient of the tungsten blank. The microstructure of the sample was observed by metallographic microscope, and the volume fraction of its pores was measured by image analysis software. The results show that porous tungsten blank with continuous porosity gradient can be obtained with oxidation-gasification method, and its porosity decreases gradually from surface to core. Fine tungsten powder is very beneficial to pore construction, and the tungsten blank containing more fine powder has higher porosity and porosity gradient. Higher reaction temperature also results in higher porosity and porosity gradient of the tungsten blank. The longer the reaction time, the higher the porosity and the larger the porosity gradient area of the tungsten blank. Furthermore, surface pores have larger size than core pores of the sample.
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DOI：
Chinese Library Classification Number:TG146.411[金属学及工艺—金属材料]
Citation Information:
Porous tungsten blank with continuous porosity gradient was prepared via oxidation-gasification reaction between water vapor and W powder particles. The effects were investigated of W powder granularity composition,reaction temperature and time on porosity gradient of the tungsten blank. The microstructure of the sample was observed by metallographic microscope, and the volume fraction of its pores was measured by image analysis software. The results show that porous tungsten blank with continuous porosity gradient can be obtained with oxidation-gasification method, and its porosity decreases gradually from surface to core. Fine tungsten powder is very beneficial to pore construction, and the tungsten blank containing more fine powder has higher porosity and porosity gradient. Higher reaction temperature also results in higher porosity and porosity gradient of the tungsten blank. The longer the reaction time, the higher the porosity and the larger the porosity gradient area of the tungsten blank. Furthermore, surface pores have larger size than core pores of the sample.
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| GB/T 7714-2015 | [1] XIAO Bin, CAO Shun-hua, LI Shi-kang, et al. Preparation of Continuous Gradient Porous Tungsten Blank[J]. Rare Metals and Cemented Carbides, 2017(3): 15-19. |
| MLA | [1] XIAO Bin, et al., "Preparation of Continuous Gradient Porous Tungsten Blank." Rare Metals and Cemented Carbides, no. 3, 2017, pp. 15-19. |
| APA | [1] XIAO Bin, CAO Shun-hua, LI Shi-kang, XU Huan, CHEN Bing-huang, & MA Xin-xing. (2017). Preparation of Continuous Gradient Porous Tungsten Blank. Rare Metals and Cemented Carbides(3), 15-19. |
| IEEE | [1] XIAO Bin, CAO Shun-hua, LI Shi-kang, XU Huan, CHEN Bing-huang, and MA Xin-xing, "Preparation of Continuous Gradient Porous Tungsten Blank," Rare Metals and Cemented Carbides, no. 3, pp. 15-19, 2017. keywords: {porous tungsten blank;continuous porosity gradient;oxidation-gasification;W powder granularity composition;process parameter} |