摘要
利用激光熔覆表面复合纳米Y2O3颗粒的14CrSiMnV铁基合金粉体,制备了14CrSiMnV硬质合金钢涂层。研究了纳米Y2O3对涂层微观结构、微观硬度、耐热以及耐滑动摩擦的影响。结果表明:在合金涂层成型过程中,添加小于1%(质量分数)纳米Y2O3可以促进涂层组织中的树状晶向等轴晶转变,且减少涂层在600℃高温条件的氧化腐蚀现象,改善表面滑动摩擦的塑性剥离,从而使涂层拥有更好的耐热性能和耐滑动摩擦性能。
The 14 CrSiMnV hard alloy steel coating was prepared by laser cladding on the surface of 14 CrSiMnV alloy powder with yttria nanoparticles. The effect of nano-yttria on microstructure, microhardness, heat resistance and sliding friction resistance was studied. The results showed that the wear resistance and thermal oxidation resistance of cemented carbide steel coatings with less than 1% nano-yttria are improved significantly, which is due to that the addition of nano-yttria promotes the transformation of dendritic crystal to equiaxed crystal during the forming process of cemented carbide steel coatings, reduces the oxidation corrosion process of Fe main phase at 600 ℃, and improves the plastic peeling of surface friction. So that the coating has better heat resistance and sliding friction resistance.
作者
刘小鱼
隋意
杨利峰
岳俊宇
孙晓华
刘常升
Liu Xiaoyu;Sui Yi;Yang Lifeng;Yue Junyu;Sun Xiaohua;Liu Changsheng(School of Materials Science and Engineering,Northeastern University,Shenyang 110004,China;State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou 014030,China;Institute of Metrology and Physics and Chemistry,Inner Mongolia North Heavy Industry Group Co.,Ltd.,Baotou 014030,China;School of Materials Science and Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)
出处
《中国稀土学报》
CAS
CSCD
北大核心
2020年第5期688-695,I0004,共9页
Journal of the Chinese Society of Rare Earths
基金
辽宁省自然基金项目(U1508213)
国家重点研发项目(2017YFB0305801)资助。
关键词
纳米Y2O3
激光熔覆
耐热
耐磨
nano-Y2O3
laser cladding
heat resistance
wear resistance
