摘要
用氩弧熔覆技术在淬火后的65Mn基体表面制备了TiC颗粒增强镍基复合涂层。利用扫描电镜、光学显微镜、往复式摩擦磨损试验机和显微硬度计对涂层的显微组织、耐磨性及硬度分布进行了测试研究。结果表明:复合涂层是由γ-Ni、CrB、M_(23)C_6、TiC等组成。涂层组织中TiC颗粒弥散分布在基体金属内。有涂层的深松铲显微硬度最高可达1034 HV,约为65Mn淬火后显微硬度的2倍。熔覆后的深松铲具有较好的耐磨性,使用寿命显著提高。
Ni substrate composite coating reinforced by TiC particle was prepared on the surface of 65Mn matrix after quenching by argon arc cladding technology. The microstmcture, wear resistance and hardness distribution of the coating were analyzed by SEM, optical microscope, reciprocating friction-wear testing machine and microhardness tester. The results indicate that the composite coating is composed of γ-Ni, CrB, M23C6 and TiC. The TiC particles in the coating dispersively distribute in the metal substrate. The highest microhardness value of the sub-soling shovel with the coating is up to 1034 HV, which is two times that of 65Mn after quenching. The sub-soling shovel after cladding has more excellent wear resistance properties, which can significantly improve its working life.
出处
《热加工工艺》
CSCD
北大核心
2016年第14期127-129,132,共4页
Hot Working Technology
基金
河北省自然科学基金资助项目(E2014204028)
河北省教育厅青年基金项目(QN2014100)
河北省教育厅青年基金项目(QN20131022)
关键词
深松铲
氩弧熔覆
TIC
耐磨性
sub-soling shovel
argon arc cladding
TiC
wear resistance
