搅拌反应合成Al-Ti金属间化合物强化铝基复合材料的工艺

The process analysis of Al matrix composites reinforced by stirring reaction of synthetical Al-Ti intermetallics

分别采用冰晶石与二氧化钛、冰晶石与钛粉、氟钛酸钾为加入物,通过搅拌原位合成TiAl3/7075铝基复合材料,从热力学角度分析反应的可能性,并借助光学显微镜(OM)、X射线衍射分析仪(XRD)、扫描电镜(SEM)及能谱分析仪(EDX)分析复合材料的微观组织及物相。结果表明,3种加入物都可以制备铝基复合材料,而冰晶石与钛粉的加入物为制备TiAl3/7075铝基复合材料的最佳反应物。

TiAl3/7075 matrix composites was synthesized by adding cryolite and titanium dioxide,cryolite and titanium powder,and potassium fluotitanate respectively through stirring reaction.The possibility of reaction was discussed from thermodynamic aspects.The microstructure of composite materials and phase were analyzed by optical microscope（OM）,X-ray diffractionmeter（XRD）,scanning electron microscopy（SEM） and energy spectrum analysis（EDX）.The results show that：all the three materials can be used for preparing aluminum matrix composites,while the cryolite and titanium powder is the best material for preparing TiAl3/7075 matrix composites.