PM304 coating on a Ni-based superalloy rod for high temperature lubrication

被引：11

作者：

Ding, C. H. ^{[1
]}

Li, P. L. ^{[1
]}

Ran, G. ^{[1
]}

Zhou, J. N. ^{[1
]}

机构：

[1] Xian Jiaotong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2008年 / 34卷 / 02期

基金：

中国国家自然科学基金;

关键词：

milling; sintering; composites;

D O I：

10.1016/j.ceramint.2006.09.016

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

PM304 coating on a Ni-based superalloy rod for high temperature lubrication has been prepared by high-energy ball milling and powder metallurgy techniques. The composition of the PM304 coating is the same as that of PS304 coating, but the microstructure is quite different. The microstructure of PM304 coating is fine and dense; the size of self-lubricating particles in the coating is very small. Self-lubricating Cr2O3 particles are about 100 nm, BaF2/CaF2 particles about 1 mu m, Ag particles below 5 mu m, while BaF2/CaF2 and Ag particles precipitated from NiCr matrix are less than 50 nm. The fine and dense microstructure results in increased tensile strength and crack growth resistance of PM304 coating. The mean tensile strength is about 46 MPa. (c) 2006 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：279 / 284

页数：6

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