热扩散法制备Ni-Cr-Al/D.e.复合粉末的研究  

A STUDY ON Ni-Cr-Al/D.e. COMPOSITE POWDER MADE BY THERMO-DIFFUSION PROCESS

作　　者：张登君[1] 罗世民[1] 王志宽[1] 

机构地区：[1]中国科学院化工冶金研究所,北京100080

出　　处：《粉末冶金技术》1992年第4期254-259,共6页Powder Metallurgy Technology

摘　　要：探讨了固相热扩散法制备燃气涡轮高温可磨耗封严用Ni-Cr-Al/D.e.复合粉末材料的工艺技术。研究了铝铬共扩散、扩散时间及温度、活化剂、原料铬粉及铝粉等对合金化过程的影响。介绍了制备Ni-Cr-Al复合包复粉末的工艺条件和所制备粉末的性能。The present paper has discussed the technologies of Ni-Cr-Al/D.e. composite powder materials used in gas combustion engine for wearable sealing made by solid phase thermo-diffusion process. The influence of co-diffusion of aluminium and chromium, diffusing duration and temperature, active agents, aluminium and chromium raw material powder, etc. on alloying process have been studied. The technological conditions for manufacturing Ni-Cr-Al composite coating powder and the properties of the powder heve been introduced.

关 键 词：镍铬铝 硅藻土 合金复合粉末 制备 

分 类 号：TF123.71[冶金工程—粉末冶金]