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pISSN : 1598-706X / eISSN : 2288-8381


(논문)연구논문

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

Abstract

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.

Keywords

Anti-galling alloy, Bismuth, Tellurium.