摘要
以钛粉、铝粉及Al2O3晶须为原料,采用粉末冶金法制备了Al2O3w/TiAl复合材料。借助于XRD、SEM分析方法及力学性能测试,分析了显微结构,讨论了工艺条件与性能的关系。结果表明,各工艺参数对复合材料的力学性能有较大影响,对粉料高能球磨以细化颗粒,通过先湿混后干混,以均匀晶须在基体中的分布,可有效改善复合材料的力学性能。
The composites were prepared by powder metallurgy process by using Al powder, Ti powder and Al2O3 whiskers added in. Mechanical properties of the samples were tested after hot pressing sintering, cutting and surface treatment. Microstructure was investigated by XRD and SEM. The relationships between the process and properties were investigated. The results show the parameters of processing have important effects on mechanical properties of the composites. The powder is milled in order to refine particles and the whiskers are dispersed into matrix homogeneously by dry blending after wet blending. By this way, the mechanical properties of composites is improved effectively.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2008年第2期46-48,共3页
Aerospace Materials & Technology
基金
国家自然科学基金资助(50672056)
