铸钢表面电火花沉积层摩擦磨损性能

材料热处理学报, 2015, 36(1): 169-172.

铸钢表面电火花沉积层摩擦磨损性能

王建升 ^1, , 卢海霞 ^2, , 阎镇威 ^3, , 李刚 ^4, , 唐明奇 ^5, , 冯在强 ^6,

1.华北水利水电大学机械学院,河南郑州450011

2.华北水利水电大学机械学院,河南郑州450011

3.华北水利水电大学机械学院,河南郑州450011

4.华北水利水电大学机械学院,河南郑州450011

5.华北水利水电大学机械学院,河南郑州450011

6.华北水利水电大学机械学院,河南郑州450011

基金项目: 水利部948推广项目(201048)

关键词：电火花沉积 , WC-Co硬质合金 , 铸钢 , 耐磨性

Wear-resistance of WC-4Co coating on cast steel by electro-spark deposition

Keywords： ESD , WC-Co cemented carbide , cast steel , wear resistance

采用新型电火花沉积设备,把WC-4Co陶瓷硬质合金材料沉积在铸钢材料上,制备了电火花沉积合金涂层,用SEM、XRD等技术研究了沉积层的物相、微观组织结构、元素分布、显微硬度及室温高温耐磨性能及磨损机理.结果表明:沉积层主要由Fe3W3C、Co3W3C和Fe2C等相组成;沉积层与基体呈冶金结合,过渡层出现一些柱状晶和树枝状晶组织结构,沉积层中细小的Fe3W3C和Co3W3C等硬质相颗粒弥散分布于Fe2C基体上.沉积层的平均显微硬度为1803.2 HV;室温下沉积层的耐磨性和300℃高温条件下沉积的耐磨性分别比同样条件下铸钢材料的磨损性能提高了2.5倍和3.4倍;不论室温还是300℃高温条件下沉积层的磨损机理主要是粘着磨损、疲劳磨损、氧化磨损和磨粒磨损的综合作用,细小的弥散分布的硬质相是沉积层硬度及耐磨性提高的主要因素.

参考文献

[1]	Wang J S;Meng H M;Yu H Y et al.Surface hardening of Fe-based alloys powders by Nd:YAG laser cladding followed by electrospark deposition with WC-Co cemented carbide[J].RARE METALS,2010,29(04):380-384.
[2]	Lin N M;Li M L;Zou J J et al.Study on fabrication and corrosion resistance of Ni-based alloy coating on P110 steel by electrspark deposition[J].Journal of Materials Engineering and Performance,2013,22(05):1365-1370.
[3]	罗成,董仕节,熊翔.电火花振动沉积TiC功能涂层的显微组织与性能[J].材料热处理学报,2008(02):123-127.
[4]	Jian-sheng Wang,Hui-min Meng,Hong-ying Yu,Zi-shuan Fan,Dong-bai Sun.Characterization and wear behavior of WC-0.8Co coating on cast steel rolls by electro-spark deposition[J].矿物冶金与材料学报,2009(06):707-713.
[5]	WANG Mao-cai,WANG Wei-fu,XIE Yu-jiang,ZHANG Jie.Electro-spark epitaxial deposition of NiCoCrAlYTa alloy on directionally solidified nickel-based superalloy[J].中国有色金属学报（英文版）,2010(05):795-802.
[6]	Ribalko AV.;Sahin O. .The use of bipolar current pulses in electrospark alloying of metal surfaces[J].Surface & Coatings Technology,2003(2/3):129-135.
[7]	WANG Jiansheng,MENG Huimin,YU Hongying,FAN Zishuan,SUN Dongbai.Wear characteristics of spheroidal graphite roll WC-8Co coating produced by electro-spark deposition[J].稀有金属(英文版),2010(02):174-179.
[8]	Tang Chang-bin;Liu Dao-xin;Wang Zhan;Gao Yang .Electro-spark alloying using graphite electrode on titanium alloy surface for biomedical applications[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2011(15):6364-6371.
[9]	乔生儒,韩栋,李玫.钢铁表面电火花淬火组织超细化及机理[J].机械工程材料,2004(08):7-9.

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