论文部分内容阅读
用高能球磨机分别对含三种成分的 Ｎｉ－Ａｌ５０－ｘ－ＣＯｘ（ｘ＝５， １０， ２０）粉末进行机械合金化 Ｃｏ的加入对合金的机械合金化过程及产物有很大影响 Ｃｏ含量变化使反应机制发生明显改变，并同时得到不同的反应产物用 ＤＴＡ测定粉末最终产物的热稳定性， Ｎｉ－Ａ１４５－Ｃｏ５， Ｎｉ－Ａ１４０－Ｃｏ１０粉末在加热过程中未发生相分解，仍保持Ｇ－ＮｉＡＩ（Ｃｏ）结构而Ｎｉ－Ａ１３０－Ｃｏ２０球磨所得过饱和固溶体γ－Ｎｉ（Ａｌ，Ｃｏ）在高温下分解为和两相组织
The mechanical alloying of Ni-Al50-x-COx (x = 5, 10, 20) powder containing three components with a high energy ball mill separately. The addition of Co has a great influence on the mechanical alloying process and the product of the alloy. Co content change The reaction mechanism was significantly changed, and at the same time, different reaction products were obtained to determine the thermal stability of the final powder product by DTA. No decomposition of the Ni-A145-Co5 and Ni-A140-Co10 powders occurred during heating, NiAl (Co) structure and Ni-Al30-Co20 ball milling supersaturated solid solution γ-Ni (Al, Co) at high temperature decomposition and the two-phase structure