激光技术2012，Vol.36Issue(4)：441-444,4.DOI:10.3969/j.issn.1001-3806.2012.04.003
激光合金化引入亚微米MC型增强相的研究
Submicron MC-type reinforced coating produced by laser alloying
摘要
Abstract
In order to study the influence of carbides produced by in situ synthesis of various chemical reactions or direct addition on wear resistance of carbide reinforced composite coatings, TiC reinforced Fe-based composite coatings were prepared on T10 steel substrate by laser alloying. Then their microstructures, phases, microhardness and wear properties were investigated and analyzed. Results showed that compact and non-defective alloy layers were obtained, consisting of γ-CrFe, C0.5 and submicron MC(M=Ti, Cr, W) particles. Austenite transformed into martensite in wear testing because of processing hardening. Wear weight loss of direct addition was 2 times to 3 times larger than that of in situ synthesis. The content of carbides produced through combination reaction between Ti and C was higher than that produced through reduction reaction between TiO2 and C, which led to a better tribological performance. The results can serve as a guide in selecting the best method of the ceramic phase introduction when preparing TiC reinforced Fe-based composite coatings.关键词
激光技术/激光合金化/原位合成/直接添加/亚微米MC/耐磨Key words
laser technique/laser alloying/in situ synthesis/direct addition/submicron MC/wear resistance分类
矿业与冶金引用本文复制引用
韩甜,王爱华,彭锦,吴宝业,黄朝..激光合金化引入亚微米MC型增强相的研究[J].激光技术,2012,36(4):441-444,4.基金项目
国家九七三重点基础研究发展计划资助项目(2012CB619600) （2012CB619600）
