| 射频等离子体制备球形Ti—6Al—4V粉末性能表征 |
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| 引用本文： | 盛艳伟,郭志猛,郝俊杰,王玉明.射频等离子体制备球形Ti—6Al—4V粉末性能表征[J].北京科技大学学报,2012(2):164-168. |
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| 作者姓名： | 盛艳伟 郭志猛 郝俊杰 王玉明 |
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| 作者单位： | 北京科技大学新材料技术研究院 |
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| 基金项目： | 新金属材料国家重点实验室开放基金资助项目(2010Z--09);北京市先进粉末冶金材料与技术重点实验室开放基金资助课题 |
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| 摘 要： | 以不规则形状的Ti—6Al—4V(TC4)粉末为原料,通过射频等离子体球化处理制备了球形TC4粉末,并研究了球化处理对粉末特性及加料速率对粉末球化率的影响.利用扫描电子显微镜、激光粒度分析和霍尔流速计分别对其粉末微观结构、粒度分布和粉体性能进行了测试和分析.结果表明:TC4粉末经等离子球化处理后得到表面光滑、球形度好及球化率可达到100%的球形粉末;球化处理后,粉末的松装密度、振实密度和粉末流动性得到明显改善,粒度略微增大;随着加料速率的增加,TC4粉的球化率逐渐降低.
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| 关 键 词： | 钛合金 粉末 射频等离子体 球化处理 |
Characteristics of spherical Ti-6Al-4V powders prepared by RF plasma processing |
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| SHENG Yan-wei,GUO Zhi-meng,HAO Jun-jie,WANG Yu-ming.Characteristics of spherical Ti-6Al-4V powders prepared by RF plasma processing[J].Journal of University of Science and Technology Beijing,2012(2):164-168. |
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| Authors: | SHENG Yan-wei GUO Zhi-meng HAO Jun-jie WANG Yu-ming |
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| Institution: | Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China |
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| Abstract: | Spherical Ti-6Al-4V(TC4) powders were prepared with irregular TC4 powders by a radio frequency(RF) plasma.The effect of spheroidization on the powder characteristics and the influence of feeding rate on the spheroidization ratio were studied.The morphology,particle size distribution and characteristics of the spherical powders were analyzed by scanning electron microscopy(SEM),laser micron sizer(LMS) and Hall flowmeter,respectively.The results show that TC4 powders after plasma processing have good sphericity and smooth surfaces,and their spheroidization ratio is almost 100%.The loose density,tap density and powder flowability significantly increases after the process,but the spheroidization ratio gradually decreases with the feeding rate increasing. |
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| Keywords: | titanium alloys powders radio frequency plasma spheroidization |
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