| 原位反应制备细颗粒TiB2增强铝基复合材料研究 |
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| 引用本文： | 龙祥愿,章爱生.原位反应制备细颗粒TiB2增强铝基复合材料研究[J].轻金属,2006(6):57-60,64. |
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| 作者姓名： | 龙祥愿 章爱生 |
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| 作者单位： | 南昌大学材料科学与工程学院,江西,南昌,330047 |
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| 摘 要： | 热力学分析和试验结果证实，KBF4、Ti反应剂以一定的Ti／B原子比混合加入熔体，最终反应生成单一TiB2相，能抑制TiAl3等其它相的产生。在此基础上，分析比较了反应剂混合粉以预制块形式加入、气流载入熔体两工艺条件下的TiB2颗粒分布、大小。结果表明：通过氩气流载入反应混合粉，并快速搅拌熔体，可克服TiB2颗粒在晶界的团聚，细化颗粒，获得颗粒小于0．5um、且较均匀分布的TiB2／Al复合材料。
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| 关 键 词： | 原位反应 铝基复合材料 TiB2颗粒 |
| 文章编号： | 1002-1752（2006）06-0057-04 |
| 收稿时间： | 2005-12-31 |
| 修稿时间： | 2005-12-31 |
Research on In-situ Synthesized TiB2/Al Matrix Composites |
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| LONG Xiang-yuan,ZHANG Ai-sheng.Research on In-situ Synthesized TiB2/Al Matrix Composites[J].Light Metals,2006(6):57-60,64. |
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| Authors: | LONG Xiang-yuan ZHANG Ai-sheng |
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| Affiliation: | School of Materials Science and Engineering, Nanchang University , Nanchang 330047, China |
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| Abstract: | Thermodynamics analysis indicates that the compound TiB_2 is more stable than TiAl_3 and AlB_2.The results show that no other compounds than TiB_2 appear in molten aluminum when the atom ratio of Ti/B in KBF_4+Ti is suitable.Then two adding techniques of KBF_4+Ti powder are compared.By injecting KBF4+Ti powder into molten Al and rapidly stirring,it has been shown that TiB_2 particulates reunion on grain boundary disappear and TiB_2 particulates(less than 0.5um) uniformly distribute in the aluminum matrix composite. |
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| Keywords: | In- situ reaction AI matrix composites TiB2 particulates |
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