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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

高能球磨制备TiB2/TiC纳米复合粉体

李建林1; 曹广益2; 周勇1; 胡克鏊1   

  1. 1. 金属基复合材料国家重点实验室; 上海交通大学燃料电池研究所, 上海 200030; 2. 上海交通大学燃料电池研究所, 上海 200030
  • 收稿日期:2000-06-26 修回日期:2000-07-11 出版日期:2001-07-20 网络出版日期:2001-07-20

TiB2/TiC Nano-Composite Powder Fabricated via High Energy Milling

LI Jian-Lin1; CAO Guang-Yi2; ZHOU Yong1; HU Ke-Ao 1   

  1. 1.State key lab of metal matrix composites; Shanghai Jiaotong University; Shanghai 200030; China; 2. Shanghai Jiaotong University, Shanghai, China
  • Received:2000-06-26 Revised:2000-07-11 Published:2001-07-20 Online:2001-07-20

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摘要： 研究了通过高能球磨制备ＴｉＢ２／ＴｉＣ纳米复合粉体的反应过程和机理，对粉体的显微结构进行了表征．实验结果表明，采用金属 Ｔｉ和 Ｂ４Ｃ为原料，在球磨过程中， ＴｉＣ先于 ＴｉＢ２形成．球磨５ｈ后Ｔｉ与Ｂ４Ｃ反应生成ＴｉＢ２和ＴｉＣ，在随后的长时间高能球磨过程中ＴｉＢ２和ＴｉＣ两相保持稳定．球磨 ３０ｈ后，直径约 ８ｎｍ的 ＴｉＣ纳米粒子分布在 １００～２００ ｎｍ的 ＴｉＢ２粒子中，形成均匀分布的纳米ＴｉＢ２／ＴｉＣ复合粉体．

关键词: 高能球磨, 碳化硼, 硼化钛, 碳化钛

Abstract: The process and the mechanism of TiB2/TiC nano-composite powder fabricated via high energy milling were studied, and as-prepared powders were characterized by TIM and XRD techniques. The results show that Ti can react with B4C during milling process, and TiC is firstly produced, TiB2/TiC particles formed after 5 hours milling. TiB2 and TiC phases co-exist in following long time milling. After 30 hours milling, nanosized TiC particles with a diameter of 8 urn are located in TiB2 particles with a size of 100-200nm.

Key words: high energy milling, boron carbide, titanium carbide, titanium boron

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