钟颖虹,陆辛,计亚平,冯泽舟,冯艳玲,于浩,李飞

• 1:机械科学研究总院
• 2:机械科学研究院浙江分院有限公司

摘要(Abstract)：

用正交试验方法研究了等离子喷涂工艺的4个主要参数(喷涂距离、送粉量、主气(N2)流量、喷涂电流)对梯度热障涂层的过渡层孔隙率的影响,确定了最优工艺参数,并对工艺优化后涂层的显微组织和结合强度进行研究。结果表明:在这4个工艺因素中,送粉量、喷涂距离对过渡层的孔隙率影响较大;在梯度热障涂层中,由基体到涂层表面,形成一种无宏观结合界面的成分连续变化的组织结构;工艺优化能显著提高涂层的性能,优化工艺后喷涂的梯度热障涂层结合强度达到50 MPa。

关键词(KeyWords)： 等离子喷涂;梯度热障涂层;过渡层;正交试验;孔隙率;结合强度

Abstract:

Keywords:

基金项目(Foundation): 浙江省科学技术厅项目(2009C11086)

作者(Author): 钟颖虹,陆辛,计亚平,冯泽舟,冯艳玲,于浩,李飞

DOI: 10.13289/j.issn.1009-6264.2015.s2.032

参考文献(References)：

• [1]夏军.梯度功能材料的制备技术与应用前景[J].化工新型材料,2001,29(6):23-28.XIA Jun.Manufacture technology and application prospect of gradient function material[J].New Chemical Materials,2001,29(6):23-28.
• [2]Suresh S,Mortensen A.功能梯度材料基础[M].李守新,等译.北京:国防工业出版社,2000.
• [3]徐智谋.功能梯度材料和低温制备研究现状及展望[J].表面技术,2000,29(2):l-4.XU Zhi-mou.Research status and prospect of functionally gradient materials and fabrication techniques under low temperature[J].Surface Technology,2000,29(2):l-4.
• [4]张磊,张社会,王伟,等.功能金属/陶瓷梯度热障涂层的材料体系及制备方法[J].热加工工艺,2010,39(16):99-103.ZHANG Lei,ZHANG She-hui,WANG Wei,et al.Material system and preparation method of metal/ceramic gradient thermal barrier coating[J].Hot Working Technology,2010,39(16):99-103.
• [5]唐达培,高庆.梯度热障涂层的设计和性能与失效研究[J].宇航材料工艺,2006(5):12-15.TANG Da-pei,GAO Qing.Design,performance and failure mechanism of gradient thermal barrier coatings[J].Aerospace Materials&Technology,2006(5):12-15.
• [6]刘红兵,陶杰,张平则,等.功能梯度A12O3涂层残余热应力分析[J].机械工程学报,2008,44(8):26-31.LIU Hong-bing,TAO Jie,ZHANG Ping-ze,et al.Simulation of residual stresses in functionally gradient Al2O3coatings[J].Chinese Journal of Mechanical Engineering,2008,44(8):26-31.
• [7]Hamatani H,Shimoda N,Kitaguchi S,et al.Effect of the composition profile and density of LPPS sprayed functionally graded coating on the thermal shock resistance[J].Science and Technology of Advanced Materials,2003,4(2):197-203.
• [8]王志平,林小娉,贾鹏,等.等离子喷涂热障涂层热震失效过程及残余应力分析[J].材料热处理学报,2012,33(4):116-120.WANG Zhi-ping,LIN Xiao-ping,JIA Peng,et al.Thermal shock failure and residual stresses analysis of thermal barrier coatings by atmospheric plasma spray[J].Transactions of Materials and Heat Treatment,2012,33(4):116-120.

文章评论(Comment)：