摘要
采用电弧喷涂方法在20g钢表面制备了以Fe、Al为基、Cr3C2作为增强相的涂层。研究了涂层的组织结构、干摩擦条件下的磨损性能和在650℃时的氧化行为。结果表明:呈层片状的涂层主要组成相为AlFe、AlFe3、FeCr金属间化合物和Al2O3,涂层中存在纳米结构和非晶态组织;经过静态650℃×1h氧化后涂层中有不连续的Al2O3膜和Cr2O3形成,提高了涂层的抗氧化性能;添加的Cr3C2和反应生成的金属间化合物提高了涂层的磨损抗力,在干摩擦条件下涂层的抗磨损性能高于淬火处理的45钢。
A Cr3C2 reinforced Fe/Al base alloy composite coating on 20g steel substrate was prepared by arc spray method. The microstructure and wear property in dry friction condition and oxidation behavior at 650℃ were investigated. The results indicate that the coating has typical lamella structure which consists of AlFe ,AlFe3, FeCr intermetallic compound and Al2O3 phase. There are also nanocrystal and noncrystal phases in the coating. Discontinued Al2O3 film and formation of Cr2O3 in the coating, after static oxidization treatment at 650 ℃ for 1 h improve the oxidation resistance of the coating. Wear resistance of the coating under dry friction condition is better than that of 45 steel due to the addition of Cr2O3 particles and the intermetallic compounds in the coating.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2007年第6期139-142,共4页
Transactions of Materials and Heat Treatment
基金
吉林省科技厅自然科学基金资助项目(20020619)
关键词
电弧喷涂
涂层
组织
抗磨损性能
抗氧化性能
arc spraying
coating
microstructure
wear resistance
oxidation resistance
作者简介
宫文彪（1966-），男，长春工业大学材料学院教授，博士，主要从事金属材料焊接及热喷涂方面的研究，电话：0431—85716577，E—mail：gwbiao@sina．com。
