pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (26권4호 191-196)
A Study on Ni Base Anti-galling alloy with Finely Dispersed Precipitates
석출상이 분산제어된 내마모성 니켈기 윤활합금 연구
Young Kyu K im, Kyung Tak Kim
Hongik University
The effects of Bi and Te on the anti-galling behaviors of Ni base alloy were investigated by SEM, galling test and wear test. Anti-galling characteristics depended on the structure of matrix and distribution of Bi-rich phase which was precipitated at grain boundary. The addition of 5 wt% Bi markably enhanced anti-galling properties. The addition of Te caused Bi-rich precipitates to disperse finely and casting structure to form equiaxed type. From the above tests, the concentration of 5 wt% Bi and 1 wt% Te was selected to optimize in this alloy.
Anti-galling alloy, Bismuth, Tellurium.