超音速火焰喷涂微米和纳米结构WC-12Co涂层及其性能
Study of Properties of Conventional and Nanostructured WC-12Co Coatings Deposited by HVOF
摘 要
以纳米和微米级WC-12Co粉末为原料,采用超音速火焰喷涂(HVOF)方法在16Mn基体上制备了两种涂层.利用X射线衍射仪对喷涂粉末及涂层进行了相结构分析,用扫描电镜对喷涂粉末、磨粒磨损前后的涂层表面形貌进行了观察,探讨了粉末结构、涂层的组织和结构以及抗磨粒磨损的性能.结果表明：WC-12Co粉末结构对涂层的组织结构影响非常显著,微米WC-12Co粉末中的WC的分解基本上得到了抑止,而纳米结构的粉末由于出现了WC的部分分解,导致了纳米涂层的抗磨粒磨损性能相对于微米涂层提高不多,但是与基体16Mn相比,两种涂层均表现出优异的抗磨粒磨损性能.
WC-12Co
纳米粉末
磨粒磨损
HVOF
WC-12Co
nanostructured powder
abrasive wear
Abstract
Nanostructure and conventional WC-12Co feedstock powders were thermally sprayed via high velocity oxy-fuel (HVOF) on the substrate of 16Mn.Phases of the feedstock powders and the coatings were analyzed by XRD.The characterizations of spraying powders,microstructure and surface morphology of the prophase and anaphase attrition surfaces were analyzed by SEM.The influence of structure of feedstock powders and spraying parameter on melt and decomposition of WC during spraying and the structure of coatings and abrasive wear resistance properties were investigated.The results indicate that the conventional WC particles do not decompose obviously during spraying,while nanostructured WC decompose partly,which resulted in weight loss of abrasive wear of nanostructured WC-12Co coating is less slightly than conventional WC-12Co coating,but the two kinds of coatings both display the super properties of the abrasive wear resistance properties compare to 16Mn.
中图分类号 TG174.442
所属栏目
基金项目 国家自然科学基金资助项目(50479016)
收稿日期 2006/2/11
修改稿日期 2007/2/1
网络出版日期
作者单位点击查看
备注王群(1972-),男,安徽郎溪人,讲师,博士研究生.
引用该论文: WANG Qun,DING Zhang-xiong,CHENG Zheng-hua,ZHANG Shi-ying,PU Yu-xing. Study of Properties of Conventional and Nanostructured WC-12Co Coatings Deposited by HVOF[J]. Materials for mechancial engineering, 2007, 31(4): 17～20
王群,丁彰雄,陈振华,张世英,蒲玉兴. 超音速火焰喷涂微米和纳米结构WC-12Co涂层及其性能[J]. 机械工程材料, 2007, 31(4): 17～20
被引情况:
【1】王洪涛,纪岗昌,陈枭,白小波,陈清宇,富伟, "超音速火焰喷涂碳化物金属陶瓷涂层的磨粒磨损性能",机械工程材料 35, 44-47(2011)
【2】周夏凉,陈小明,吴燕明,伏利,王莉容,马红海, "超音速火焰喷涂WC-10Co4Cr涂层的力学性能及断裂机理",机械工程材料 39, 52-55(2015)
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参考文献
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【2】王辉平,胡茂中.纳米技术与硬质合金[J].中国钨业,2001,16(2):30-32.
【3】McCandlish L E.Production capability and powder processing of nano-structured tungsten carbide-cobalt[J].Metal Powder Report,1997,52(12):41-44.
【4】Jia K,Fischer T E.Sliding wear of conventional and nanostructured cemented carbides[J].Wear,1997,203:310-318.
【5】张云乾,丁彰雄,范 毅.HVOF喷涂纳米WC-12Co涂层的性能研究[J].中国表面工程,2005,18(6):25-29.
【6】Stewart D A,Shipway P H,McCartney D G.Microstructural evolution in thermally sprayed WC-Co coatings:comparison between nanocomposite and conventional starting powders[J].Acta Materialia,2000,48(7):1593-1604.
【7】周克崧,宋进兵,刘敏,等.热喷涂技术替代电镀硬铬的研究进展[J].材料保护,2002,35(12):1-4.
【8】Qiao Yunfei,Fischer Traugott E.The effects of fuel chemistry and feedstock powder structure on the mechanical and tribological properties of HVOF thermal-sprayed WC–Co coatings with very fine structures[J].Surface and Coatings Technology,2003,172:24-41.
【9】Voyer J,Marple B R.Sliding wear behavior of high velocity oxy-fuel and high power plasma spray-processed tungsten carbide-based cermet coatings[J].Wear,1999,225(1):135-145.
【10】Celik E,Culha O,Uyulgan B.Assessment of microstructural and mechanical properties of HVOF sprayed WC-based cermet coatings for a roller cylinder[J].Surface & Coatings Technology,2006,200(14/15):4320-4328.
【11】Wirojanupatump S,Shipway P H,McCartney D G.The influence of HVOF powder feedstock characteristics on the abrasive wear behaviour of CrxCy-NiCr coatings[J].Wear,1997,249(9):829-837.
【12】Ganesh Skandan,Ruvee Yao,Bernard H Kear,et al.Multimodal powders:a new class of feedstock material for thermal spraying of hard coatings[J].Scripta Materialia,2001(8/9):1699-1702.
【13】Lima R S,Marple B R.From APS to HVOF spraying of conventional and nanostructured titania feedstock powders:a study on the enhancement of the mechanical properties[J].Surface and Coatings Technology,2005,A395:269-273.
【14】Gel M l,Jordan E H,Sohn Y H,et al.Enhanced ductility in thermally sprayed titania coating synthesized using a nanostructured feedstock[J].Materials Science and Engineering A,2005(1/2):269-274.
【15】Luo H,Goberman D,Shaw L,et al.Indentation fracture behavior of plasma-sprayed nanostructured Al2O3-13wt.%TiO2 coatings[J].Materials Science and Engineering A,2003(1/2):237-245.
【16】Lima R S,Marple B R.From APS to HVOF spraying of conventional and nanostructured titania feedstock powders:a study on the enhancement of the mechanical properties[J].Surface and Coatings Technology,2006(11):3428-3437.
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