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

Institute of Chemico-Metallurgical Research Academic Sinica, Beijing 100080, China

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。
- 固相热扩散 /
- 合金复合粉末 /
- Ni-Cr-Al/D.e. /
- 固溶体
Abstract: 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.
- solid phase thermo-diffusion /
- composite alloy powder /
- NiCr-Al/D.e. /
- solid solusion