摘要
对碳化物复合粉末热喷涂工艺和Ni基自熔合金粉末热喷焊工艺进行了研究 ,在低碳钢基体上分别采用氧 乙炔火焰喷涂Co包WC粉末、Ni包WC粉末 ,以及火焰喷焊Ni6 0、Ni6 0 +2 0 %WC自熔合金工艺获得耐磨合金涂层。研究了涂层的显微结构和相特征以及耐磨性。结果表明 ,在喷焊Ni6 0 +2 0 %WC粉末涂层的组织中 ,由于加入了WC粒子 ,有效改善了涂层的显微组织和性能 ,得到了喷焊质量和耐磨性俱佳的合金涂层。
Some comprehensive experimental research has been made on the processes of flame sprayed carbide coatings and spray-welded Ni-base self-melting alloys.The Co-coated WC and Ni-coated WC powder were flame sprayed and the Ni60 and Ni60+20%WC self-melting alloy powder were spray-welded.The all substrates used were low carbon steel.The microstructure and wear resistance of the sprayed layers were investigated.The results show that in the structure of the Ni60+20%WC coating,Ni60 and part of the WC particles are decomposed and form some new hardening phases in the process of spray-welding,so the microstructure and wear resistance of the sprayed coating are improved,an excellent wear resistance can be obtained.
出处
《金属热处理》
CAS
CSCD
北大核心
2003年第8期9-13,共5页
Heat Treatment of Metals
基金
与工厂横向联合攻关项目
关键词
火焰喷涂
碳化钨
耐磨涂层
flame spraying
tungsten carbide(WC)
wear-r esistant coating