Microstructure and dry-sliding wear resistance of PTA clad (Cr, Fe)7C3/γ-Fe ceramal composite coating

被引：49
|
作者：
Liu, Yuan-Fu [1 ]
Han, Jian-Min
Li, Rong-Hua
Li, Wei-Jing
Xu, Xiang-Yang
Wang, Jin-Hua
Yang, Si-Ze
机构：
[1] Beijing Jiaotong Univ, Inst Mat Sci & Engn, Beijing 100044, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing 100083, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2006年 / 252卷 / 20期
基金：
中国国家自然科学基金;
关键词：
plasma transferred arc cladding; (Cr; Fe)(7)C-3/gamma-Fe; coating; microhardness; wear;
D O I：
10.1016/j.apsusc.2005.09.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A wear resistant (Cr, Fe)(7)C-3/gamma-Fe ceramal composite coating was fabricated on substrate of a 0.45%C carbon steel by plasma transferred arc (PTA) cladding process using the Fe-Cr-C elemental powder blends. The microstructure, microhardness and dry-sliding wear resistance of the coating were evaluated. Results shown that the plasma transferred arc clad ceramal composite coating has a rapidly solidified microstructure consisting of blocky primary (Cr, Fe)(7)C-3 and the inter-blocky (Cr, Fe)(7)C-3/gamma-Fe eutectics and is metallurgically bonded to the 0.45%C carbon steel substrate. The ceramal composite coating has high hardness and excellent wear resistance under dry sliding wear test condition. (c) 2005 Elsevier B.V. All rights reserved.
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页码：7539 / 7544
页数：6
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