纳米压痕技术表征Al2O3/3%TiO2爆炸喷涂涂层的各向异性
Application of Nanoindentation Technique to Characterization of Anisotropy of Detonation Sprayed Al2O3/3%TiO2 Coatings
摘 要
利用纳米压痕技术研究了爆炸喷涂涂层的微观结构特征和力学性能的关系.结果表明：相对于涂层表面,涂层横截面存在着尺度分布较宽的孔洞和微裂纹等缺陷;涂层微观结构的各向异性使得涂层的弹性、塑性、硬度和弹性模量等出现各向异性;与涂层横截面相比,涂层表面具有较好的抵抗外加载荷的能力和卸载后良好的弹性恢复能力;涂层表面的硬度和弹性模量分别为10.3 GPa和170.7 GPa,而涂层横截面的分别为2.9 GPa和234.5 GPa.
微观结构
纳米压痕
硬度
detonation sprayed coating
microstructure
nanoindentation
hardness
Abstract
The microstructure and indentation load-displacement behavior of sprayed Al2O3/3%TiO2 coating were investigated.In comparison with the surface of the coating,the cross-section of the coating had more pores with bigger size and more unhomogeneous distribution.The anisotropic microstructure of the coating led to apparently anisotropic mechanical properites such as plasticity,elasticity,hardness and Youngs modulus.However,the surface of the coating had better ability to resist applied load and better elastic recovery after unloading than the cross-section.The hardness and Youngs modulus of the surface of the coating were 10.3 GPa and 170.7 GPa,respectively.While those of the cross-section of the coating were 2.9 GPa and 234.5 GPa.
中图分类号 TG174.44
所属栏目
基金项目
收稿日期 2004/12/6
修改稿日期 2005/3/5
网络出版日期
作者单位点击查看
备注杨力(1966-),女,吉林白城人,高级工程师,学士.
引用该论文: YANG Li,ZHAI Chang-sheng,WANG Bin,WANG Jun,SHA Fei,SUN Bao-de. Application of Nanoindentation Technique to Characterization of Anisotropy of Detonation Sprayed Al2O3/3%TiO2 Coatings[J]. Materials for mechancial engineering, 2006, 30(5): 95～98
杨力,翟长生,王滨,王俊,沙菲,孙宝德. 纳米压痕技术表征Al2O3/3%TiO2爆炸喷涂涂层的各向异性[J]. 机械工程材料, 2006, 30(5): 95～98
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参考文献
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【3】Callus P J,Berndt C C.Relationships between mode Ⅱ fracture toughness and microstructure of thermal spray coatings[J].Surface and Coatings Technology,1999,114:114-118.
【4】Tzimas E,Mullejans H,Peteves S D,et al.Failure of thermal barrier coating systems under cyclic thermomechanical loading[J].Acta Mater,2000,48:4699-4707.
【5】Ahmed R,Hadfield M.Rolling contact fatigue performance of detonation gun coated elements[J].Tribology International,1997,30:129-137.
【6】Li Chang-jiu,Ohmori Akira.The lamellar structure of a detonation gun sprayed Al2O3 coating[J].Surface and Coatings Technology,1996,82:254-258.
【7】Kim J H,Kim M C,Park C G.Evaluation of functionally graded thermal barrier coatings fabricated by detonation gun spray technique[J].Surface and Coatings Technology,2003,168:275-280.
【8】Kawasaki A,Watanabe R.Thermal fracture behavior of metal/ceramic functionally graded materials[J].Engineering Fracture Mechanics,2002,69:1713-1728.
【9】Wan Y P,Sampath S,Prasad V,et al.An advanced model for plasma spraying of functionally graded materials[J].Journal of Materials Processing Technology,2003,137:110-116.
【10】Saravanan P,Selvarajan V,Rao D S,et al.Experimental design and performance analysis of alumina coatings deposited by a detonation spray process[J].Surface and Coatings Technology,2000,123:44-54.
【11】Tyurin Yu N,Pogrebnjak A D.Advanced in the development of detonation technologies and equipment for coating deposition[J].Surface and Coatings Technology,1999,111:269-275.
【12】VanLandingham Mark R.Review of Instrumented Indentation[J].Journal of Research of the National Institute of Standards and Technology ,2003,108(4):249-265.
【13】Oliver W C,Pharr G M.An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation measurements[J].J Mater Res,1992,7(6):1564-1583.
【14】CEN/TS 1071-7:2003,Advanced technical ceramics methods of test for ceramic coatings determination of hardness and Young's modulus by instrumented indentation testing[S].
【15】Xu Zhi-hui,Rowcliffe David.Nanoindentation on diamond-like carbon and alumina coatings[J].Surface and Coatings Technology,2002,161:44-51.
【16】Harish C,Barshilia,Rajam K S.Characterization of Cu/Ni multilayer coatings by nanoindentation and atomic force microscopy[J].Surface and Coatings Technology,2002,155:195-202.
【17】Lugscheider E,Bobzin K,Barwluf S,et al.Mechanical properties of EB-PVD-thermal barrier coatings by nanoindentation[J].Surface and Coatings Technology,2001,138:9-13.
【18】Smith R G.The basic principles of detonation coating[M].London:New York Academic Press,1974.271-279.
【19】Wang Jun,Zhang Li,Li Ke,et al.Gas detonation spray Cr3C2-NiCr coating and its application in conticaster rolls[J].Journal of Shanghai Jiaotong University,2000,34:1019-1021.
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