| 高能球磨过程中Ti与BN的反应 |
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| 引用本文： | 李建林,胡克鳌,周勇. 高能球磨过程中Ti与BN的反应[J]. 金属学报, 2001, 37(5): 547-550 |
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| 作者姓名： | 李建林 胡克鳌 周勇 |
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| 作者单位： | 上海交通大学复合材料研究所金属基复合材料国家重点实验室,上海,200100 |
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| 摘 要： | 通过研究高能球磨工艺制备纳米复合粉体过程中Ti与BN的反应过程和机理，对所制备粉体的显微结构进行了表征．实验结果表明，采用金属Ti和BN为原料，球磨10h后，即形成球状纳米复合粉体，其中球状粉体颗粒的尺寸在随后的球磨过程中基本保持不变．BN由于球磨而发生解理进而包裹Ti颗粒可能是形成稳定的球状纳米颗粒的原因．球磨30h后，Ti与BN开始反应生成TiN．TiN纳米粒子与未反应的Ti，B和BN共同形成平均粒径约100nm的、较均匀分布的球状纳米复合粉体．
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| 关 键 词： | 高能球磨 BN Ti TiN 纳米晶 |
| 文章编号： | 0412-1961(2001)05-0547-04 |
| 修稿时间： | 2000-10-16 |
REACTION OF Ti WITH BN DURING HIGH ENERGY BALL MILLING PROCESS |
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| LI Jianlin,HU Keao,ZHOU Yong State Key Lab of Metal Matrix-based Materials. REACTION OF Ti WITH BN DURING HIGH ENERGY BALL MILLING PROCESS[J]. Acta Metallurgica Sinica, 2001, 37(5): 547-550 |
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| Authors: | LI Jianlin HU Keao ZHOU Yong State Key Lab of Metal Matrix-based Materials |
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| Affiliation: | LI Jianlin,HU Keao,ZHOU Yong State Key Lab of Metal Matrix-based Materials,Institute of Composite Materials,Shanghai Jiaotong University,Shanghai 200030 |
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| Abstract: | Reaction mechanism of Ti with BN during high energy ball milling has been studied. The microstructure development of the powder mixtures was monitored by X-ray diffraction, XPS, scanning electron microscopy and transmission electron microscopy. Nanosized spherical particles with an average size of 100 nm are formed after 10 h of milling, which was attributed to that Ti particles were wrapped by BN slices. After 30 h ball milling BN and elemental Ti powder mixture at ambient temperature TiN formed. After 40 h milling, the sphere-like nanosized composite particles are consisting of TiN particles, amorphous B, the residual BN and unreacted Ti. |
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| Keywords: | ball milling BN Ti TiN namocrystal |
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