涂层结构设计对等离子喷涂陶瓷层结合强度及莫应力的影响

材料研究学报, 1996, 10(6): 623-627.

涂层结构设计对等离子喷涂陶瓷层结合强度及莫应力的影响

华南理工大学

基金项目: 国家教委博士点基金

关键词：等离子喷涂 , Professor , Department of Machanical and Electric Engineering , South China University ofTechnology , GuangZhou 510641)

EFFECT OF LAMINETED DESIGN ON THE BOND STRENGTH AND STRESS OF PLASMA SPRAYED COATINGS

YANG Yuanzheng , LIU Zhengyi , ZHUANG Yuzhi , LUO Chengping(South China Unversity of Technology)

Keywords： : plasma spraying residual stress bond strength liquid phase sintering additiveCorrespondent: ( LIU Zhengyi , 残余应力 , 结合强度 , 液相烧结 , 添加剂

用等离子在45#碳钢上喷涂了不同涂层设计的Al2O3以及Al2O3+130mg·g-1TiO2陶瓷层.用X-射线衍射法和拉伸实验测量了涂层表面层中的残余应力及结合强度.增加粘结层和过渡层能大大地克服陶瓷涂层与基材机械的以及热的不匹配性,使涂层的应力和结合强度都得到明显改善.此外,SiO2能改善ZrO2陶瓷层与基材以及陶瓷层内部的结合程度,使涂层内应力松弛并使其结合强度提高.然而SiO2添加剂只有在高熔点陶瓷层中(如ZrO2),"液相烧结"作用才明显,而在熔点较低的陶瓷层中(如Al2O3),这种作用并不明显.在用等离子喷涂低熔点Al2O3陶瓷时,添加适量的低熔点TiO2陶瓷是必要的.

The laminated coatings of Al2O3-NiCrAl and Al2O3+130mg· g-1TiO2-NiCrAl were deposited on medium carbon steel substrates by plasma spraying.The bond strengths of the coatingS were measured by tensile adheSion bond tests, and the residual stresses in the ou

参考文献

[1]
[2]
[3]	GrotAS,MartynJ．CeramBull,1981,60:8072VoganJW,HsuL,StetsonAR．ThinSolidFilms,1981,84:753WastonJW,LevincSR．ThinSolidFilms,1984,119:1854McDonaldG,HendricksRC．ThinSolidFilms,1980,83:4915陈汉存,刘正义,庄育智．材料科学进展,1992,6:1466KnotekO,ElsinsR,StrompenN．ThinSolidFilms,1984,118

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