原位反应合成TiB<sub>2</sub>的生长行为

乐永康; 张建平; 陈东; 马乃恒; 王浩伟; 毛建伟

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原位反应合成TiB₂的生长行为
Growth Behavior of In-situ Synthesized TiB₂ Particle
2008年第2期页码：102-105
纸质出版日期： 2008 ，
DOI：

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[1]乐永康,张建平,陈东,马乃恒,王浩伟,毛建伟.原位反应合成TiB_2的生长行为[J].特种铸造及有色合金,2008(02):102-105+78.

Le Yongkang1, Zhang Jianping1, Chen Dong2, et al. Growth Behavior of In-situ Synthesized TiB₂ Particle[J]. Special Casting & Nonferrous Alloys, 2008,(2):102-105.
[1]乐永康,张建平,陈东,马乃恒,王浩伟,毛建伟.原位反应合成TiB_2的生长行为[J].特种铸造及有色合金,2008(02):102-105+78. DOI：

Le Yongkang1, Zhang Jianping1, Chen Dong2, et al. Growth Behavior of In-situ Synthesized TiB₂ Particle[J]. Special Casting & Nonferrous Alloys, 2008,(2):102-105. DOI：

摘要

研究了（K2TiF6+KBF4）/A356混合盐反应体系中原位合成TiB2增强相的热力学行为及其晶体生长行为。结果表明

原位反应温度明显影响反应体系最终产物及TiB2增强相的形貌。（K2TiF6+KBF4）/A356体系原位反应温度应控制在850℃为宜

由此可以完全消除TiAl3脆性相

并生成六棱粒状TiB2增强相颗粒

提高增强相强化效果。

Abstract

The thermo-dynamics and crystal growth of in-situ synthesized TiB2 reinforcement were investigated in A356 Al/K2TiF6 +KBF4 mixed salt reaction system.The results indicate that the in-situ reaction temperature has affected significantly the final product in the system and morphology of TiB2 reinforcement.The TiAl3 phase in the composites can be totally disappeared and six-rowed granular TiB2 reinforcement can be generated with controlling reaction temperature of A356 Al/K2TiF6 +KBF4 mixed salt reaction system at 850 ℃

which is beneficial to improving the enhancing effects.