王建升,高玉新,张瑞珠

• 1:华北水利水电学院机械学院
• 2:台州学院机械工程学院

摘要(Abstract)：

采用电火花沉积工艺,在铸钢表面制备了WC-4Co沉积涂层,采用X射线衍射仪、扫描电镜、显微硬度计等对沉积层的相结构、显微组织、显微硬度及耐磨性能进行了分析。结果表明:沉积层主要由Co3W3C、Fe3W3C、W2C、Fe7W6等相组成;沉积层与基体呈冶金结合,Fe7W6、W2C等硬质相弥散分布于沉积层中,部分区域硬质相达到了纳米颗粒尺寸;沉积层的平均硬度为1517HV0.3,约是基体硬度(502 HV0.3)的3倍;其耐磨性能比基体提高了2.4倍;沉积层的主要磨损机制为疲劳磨损,细小的弥散分布的硬质相是沉积层硬度以及耐磨性能提高的主要因素。

关键词(KeyWords)： 电火花沉积;WC-Co沉积层;铸钢;微观结构;耐磨性

Abstract:

Keywords:

基金项目(Foundation): 水利部948推广项目(201048);; 浙江省科技计划项目(No.2008C31040)

作者(Author): 王建升,高玉新,张瑞珠

DOI: 10.13289/j.issn.1009-6264.2010.12.021

参考文献(References)：

• [1]Wang Jian-sheng,Hui-min Meng,Hong-ying Yu,et al.Characterization and wear behavior of WC-0.8Co coating on cast steel rolls by electro-sparkdeposition[J].International Journal of Minerals,Metallurgy and Materials,2009,16(6):707-713.
• [2]张鲲,何业东,王德仁.电火花沉积MCrAlY涂层及其高温氧化行为[J].材料热处理学报,2008,29(4):143-147.ZHANG Kun,HE Ye-dong,WANG De-ren.MCrAlY coatings deposited by electrospark and their high-temperature oxidation behavior[J].Transactions of Materials and Heat Treatment,2008,29(4):143-147.
• [3]WANG Jian-sheng,MENG Hui-min,YU Hong-ying,et al.Wear characteristics of spheroidal graphite roll WC-8Co coating produced by electro-sparkdeposition[J].Rare Metals,2010,29(2):174-179.
• [4]罗成,熊翔,董仕节,等.点焊电极表面电火花沉积TiB2涂层的特性[J].材料热处理学报,2009,30(6):178-182.LUO Cheng,XIONG Xiang,DONG Shi-jie,et al.Characteristics of TiB2 coating on surface of copper electrode prepared by electro-spark deposition[J].Transactions of Materials and Heat Treatment,2009,30(6):178-182.
• [5]Ribalko A V,Sahin O.The use of bipolar current pulses in electro-spark alloying of metal surfaces[J].Surface and Coatings Technology,2003,168(3):129-135.
• [6]Frangini S,Masci A,Bartolomeo A D.Cr7C3-based cermet coating deposited on stainless steel by electro-spark process:structural characteristicsand corrosion behavior[J].Surface and Coatings Technology,2002,149:279-286.
• [7]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,2008,29(2):123-127.LUO Cheng,DONG Shi-jie,XIONG Xiang.Microstructure and properties of functional coating on spot-welding electrode prepared by vibratingelectrospark deposition of TiC[J].Transactions of Materials and Heat Treatment,2008,29(2):123-127.
• [8]邵荷生,曲敬信,许小棣.摩擦与磨损[M].北京:煤炭工业出版社,1992.
• [9]郑良桂.电火花表面强化工艺[M].北京:机械工业出版社,1987.
• [10]王新林,石世宏,郑启光.激光熔覆层凝固特征与凝固组织控制研究[J].应用激光,2001,21(3):164-166.WANG Xin-lin,SHI Shi-hong,ZHENG Qi-Guang.Study on solidification feature and the solidification microstructure control of laser cladding layer[J].Applied Laser,2001,21(3):164-166.
• [11]张文钺.焊接冶金学[M].北京:机械工业出版社,1995.
• [12]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,2004,28(8):7-9.QIAO Sheng-ru,HAN Dong,LI Mei.Extra-fine-structure obtained by electrical spark discharge quenching on steel surface[J].Materials forMechanical Engineering,2004,28(8):7-9.
• [13]Wang R J,Qian Y Y,Liu J.Structural and interfacial analysis of WC92-Co8 coating deposited on titanium alloy by electrospark deposition[J].Applied Surface Science,2004,228(4):405-409.
• [14]梁秀兵,程江波,刘燕,等.铁基非晶纳米晶涂层的耐磨性研究[J].装甲兵工程学院学报,2009,23(5):77-81.LIANG Xiu-bing,,CHENG Jiang-bo,LIU Yan,et al.Anti-wear properties of Fe-based amorphous and nanocrystalline coating[J].Journal ofAcademy of Amored Force Engineering,2009,23(5):77-81.

文章评论(Comment)：