大气等离子喷涂工艺参数对Cr2O3涂层磨损性能的影响
Effects of Plasma Spraying Parameters on Wear Properties of Cr2O3 Coatings
摘 要
通过正交试验分析了大气等离子喷涂中经常需要调整的工艺参数,即电弧电流、氩气流量、氢气流量和喷涂距离对Cr2O3涂层磨损性能的影响,并进行了磨痕的显微形貌观察和能谱分析.结果表明:影响涂层磨损性能由大到小的参数顺序依次为喷涂距离L、氢气流量GH2、电弧电流I、氩气流量GAr;随I、GAr、L的增大,涂层磨损量先减小后增加;随GH2的增大,涂层磨损量减小;最佳工艺参数为电弧电流650 A,氩气流量40 L·min-1,氢气流量10 L·min-1,喷涂距离100 mm;Cr2O3涂层的磨损机理为微观断裂剥落和粘着磨损共同作用.
Cr2O3涂层
磨损性能
atmospheric plasma spray
Cr2O3 coating
wear property
Abstract
Orthogonal test were conducted to explore the influence of plasma spraying parameters on wear behaviours of Cr2O3 coatings.The wear track were examined by scanning electron microsopy (SEM) and energy dispersive spectroscopy (EDS).The results show that the order of parameters affecting the wear property from major to minor is spray distance L,hydrogen flow GH2,plasma current I1 and argon gas flow GAr.The optimized parameters are plasma current 650 A,Ar gas flow 40 L·min-1,H2 gas flow 10 L·min-1 and spray distance 100 mm.It was found that wear mechanism of Cr2O3 coatings was governed by micro brittle fracture and adhesion wear.
中图分类号 TG174.442
所属栏目 试验研究
基金项目
收稿日期 2007/8/19
修改稿日期 2007/10/21
网络出版日期
作者单位点击查看
备注陈雄伟(1984-),男,湖北咸宁人,硕士研究生.
引用该论文: CHEN Xiong-wei,YIN Deng-feng,LIU Min,ZHU Hui-chao,DENG Chun-ming. Effects of Plasma Spraying Parameters on Wear Properties of Cr2O3 Coatings[J]. Materials for mechancial engineering, 2008, 32(7): 9～12
陈雄伟,尹登峰,刘敏,朱晖朝,邓春明. 大气等离子喷涂工艺参数对Cr2O3涂层磨损性能的影响[J]. 机械工程材料, 2008, 32(7): 9～12
被引情况:
【1】毛杰,邓畅光,杨焜,邝子奇,欧献, "大气等离子喷涂Cr2O3涂层的响应曲面法工艺优化",机械工程材料 38, 100-104(2014)
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参考文献
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【2】Giovanni Bolelli,Valeria Cannillo,Luca Lusvarghi,et al.Wear behaviour of thermally sprayed ceramic oxide coatings[J].Wear,2006,261:1298-1315.
【3】孙永兴,王引真,何艳玲.Cr2O3梯度涂层的组织与耐磨性研究[J].材料导报,2000,14(7):64-65.
【4】李剑锋,黄静琪,季珩,等.等离子喷涂Cr2O3涂层显微硬度的工艺优化[J].硅酸盐学报,2001,29(1):49-53.
【5】Celik E,Tekmen C,Ozdemir I,et al.Effects on performance of Cr2O3 layers produced on Mo/cast-iron materials[J].Surface and Coatings Technology,2003,174:1074-1081.
【6】Mann B S,Prakash Braham.High temperature friction and wear characteristics of various coating materials for steam valve spindle application[J].Wear,2000,240:223-230.
【7】Toma D,Brandl W,Marginean G.Wear and corrosion behaviou of thermally sprayed cermet coatings[J].Surface and Coatings Technology,2001,138:149-158.
【8】Fernández J E,Wang Yinglong,Tucho R,et al.Friction and wear behaviour of plasma-sprayed Cr2O3 coatings against steel in a wide range of sliding velocities and normal loads[J].Tribology International,1996,29(4):333-343.
【9】王引真,孙永兴,何艳玲.Cr2O3涂层性能与等离子喷涂工艺稳定性的关系[J].材料保护,2000,33(7):41-43.
【10】Ahn Hyo-Sok,Kwon Oh-Kwan.Tribological behaviour of plasma-sprayed chrominu oxide coating[J].Wear,1999,225:814-824.
【11】孙永兴,王引真,何艳玲.等离子喷涂工艺稳定性对Cr2O3涂层结合强度的影响[J].兵器材料科学与工程,2001,24(3):38-40.
【12】税毅,张鹏程,白彬,等.1Cr17Ni4不锈钢金属和陶瓷等离子体喷涂工艺研究[J].表面技术,2005,34(5):53-55.
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