摘要
采用混合盐反应(Mixed Salt Reaction)原位合成法制备TiB2p/Al-Sn复合材料。采用X射线衍射分析物相和扫描电镜观察显微组织,结果表明:复合材料中基体α(Al)晶粒细小,原位生成的TiB2颗粒细小(<1.5μm)且弥散分布在基体α(Al)晶内,在α(Al)与共晶β(Sn)的交界处出现颗粒团聚并形成锡包TiB2颗粒组织。在中高PV值下进行湿滑动摩擦磨损试验,与Al-10Sn基体合金相比,复合材料具有较高的承载能力、良好的减摩和抗磨性能。
The TiB2p/Al-10Sn composite was fabricated by the Mixed Salt Reaction in-situ synthesis process. The solidification phase and microstructure of the composite were analyzed by XRD and SEM respectively. The results indicate that the fine TiB2 particles （〈1.5 μm） could be formed and dispersed in the α-Al 1 matrix uniformly provided that the grains of α-Al matrix were fine. The agglomeration of TiB2 particles occurs in the interface between α-Al and eutectic tin, which forms the microstructure of TiB2 particles covered with tin film. Compared with Al-10Sn matrix alloy, the composites have higher bearing capacity, lower friction coefficient and better wear resistance.
出处
《铸造技术》
EI
CAS
北大核心
2006年第4期337-340,共4页
Foundry Technology
基金
广西科技开发计划项目(桂科能0443001-1)
关键词
原位合成
TIB2颗粒
铝基复合材料
摩擦磨损
In-situ synthesis
TiB2 particles
Aluminum matrix composites
Friction-wear
