采用激光熔覆技术在TA2钛合金表面预置Ti+ TiC+ WS2复合粉末制备了自润滑耐磨复合涂层,并对涂层的物相、显微组织、显微硬度和摩擦学性能进行了分析.结果表明:涂层与基体呈冶金结合,无明显气孔和裂纹.涂层主要有α-Ti基体、增强相(Ti,W)C1-x和TiC以及自润滑相Ti2SC和TiS.涂层的平均显微硬度为1005.4 HV约为基体TA2的5倍.在干摩擦磨损条件下,对比TA2基体,由于涂层中自润滑相Ti2SC、TiS的存在,涂层摩擦系数波动较平缓,磨损表面呈现轻微的黏着磨损,表现出较优异的耐磨减摩性能.
参考文献
| [1] | Fei Weng;Chuanzhong Chen;Huijun Yu.Research status of laser cladding on titanium and its alloys: A review[J].Materials & design,2014Jun.(Jun.):412-425. |
| [2] | 周芳;朱涛;何良华.激光熔覆原位合成TiC-TiB2复合涂层[J].中国表面工程,2013(6):29-34. |
| [3] | A. Yakovlev;Ph. Bertrand;I. Smurov.Laser cladding of wear resistant metal matrix composite coatings[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,20044(4):133-138. |
| [4] | 孙耀宁.激光熔覆TiC增强Ti基复合涂层的组织与性能[J].应用激光,2008(04):282-286. |
| [5] | Wang AH;Zhang XL;Zhang XF;Qiao XY;Xu HG;Xie CS.Ni-based alloy/submicron WS2 self-lubricating composite coating synthesized by Nd : YAG laser cladding[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20081/2(1/2):312-318. |
| [6] | 牛伟;孙荣禄.h-BN含量对激光熔覆自润滑涂层微观组织和磨损性能的影响[J].中国激光,2011(8):121-127. |
| [7] | Yan, H.;Zhang, J.;Zhang, P.;Yu, Z.;Li, C.;Xu, P.;Lu, Y..Laser cladding of Co-based alloy/TiC/CaF_2 self-lubricating composite coatings on copper for continuous casting mold[J].Surface & Coatings Technology,2013:362-369. |
| [8] | Lei, Yiwen;Sun, Ronglu;Tang, Ying;Niu, Wei.Microstructure and phase transformations in laser clad CrxSy/Ni coating on H13 steel[J].Optics and Lasers in Engineering,2015Mar.(Mar.):181-186. |
| [9] | Lu, Xiao-Long;Liu, Xiu-Bo;Yu, Peng-Cheng;Zhai, Yong-Jie;Qiao, Shi-Jie;Wang, Ming-Di;Wang, Yong-Guang;Chen, Yao.Effects of heat treatment on microstructure and mechanical properties of Ni60/h-BN self-lubricating anti-wear composite coatings on 304 stainless steel by laser cladding[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2015Nov.15(Nov.15):350-358. |
| [10] | Skarvelis, P;Papadimitriou, GD.Plasma transferred arc composite coatings with self lubricating properties, based on Fe and Ti sulfides: Microstructure and tribological behavior[J].Surface & Coatings Technology,200910/11(10/11):1384-1394. |
| [11] | 孙荣禄;杨贤金.TC4钛合金激光熔覆TiC+M涂层组织和耐磨性能研究[J].材料热处理学报,2006(1):96-99. |
| [12] | 高超;赵忠民;张龙;潘传增;黄雪刚.超重力下燃烧合成TiC（Ti,W）C1-x基细晶复合陶瓷研究[J].粉末冶金工业,2011(2):36-40. |
| [13] | Yan, H.;Zhang, P.;Yu, Z.;Li, C.;Li, R..Development and characterization of laser surface cladding (Ti,W)C reinforced Ni30Cu alloy composite coating on copper[J].Optics & Laser Technology,20125(5):1351-1358. |
| [14] | 武万良;李学伟;刘万辉;郭子玉.TiC增强钛基复合材料激光熔覆层显微组织及形成机理[J].稀有金属材料与工程,2006(9):1363-1366. |
| [15] | Shouxin Cui;Wenxia Feng;Haiquan Hu.Hexagonal Ti_2SC with high hardness and brittleness: a first-principles study[J].Scripta materialia,20096(6):576-579. |
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