陈亚军,林晓娉,王志平,王立君,董允

• 1:天津大学材料科学与工程学院
• 2:中国民航大学中欧航空工程师学院
• 3:东北大学秦皇岛分校材料科学与工程学院

摘要(Abstract)：

分别采用超音速火焰喷涂技术(HVOF)和等离子喷涂技术(APS)在高温合金GH99上制备MCrAlY粘结层(BC),对比研究了HVOF和APS喷涂BC对热障涂层(TBC)热震性能的影响。结果表明:APS喷涂BC界面不平整,起伏较大,而HVOF喷涂BC界面较为平整。经200次热循环后,APS喷涂TBC部分陶瓷层(TC)出现剥落,而HVOF喷涂TBC仅出现细小的微裂纹,生成的热生长氧化物(TGO)比较厚。APS喷涂TBC经过350次热循环后,涂层出现大面积剥离现象。而HVOF热障涂层直到热震430次后,才出现涂层剥落现象。拉曼光谱(RFS)残余应力分析表明,HVOF热障涂层残余应力随热循环次数的增加而增大,热震350次后APS热障涂层残余应力为650MPa,而HVOF热障涂层热震400次后其应力值仅为571MPa。可知,HVOF显著地提高了TBC的热震性能。

关键词(KeyWords)： 超音速火焰喷涂;等离子喷涂;热障涂层;热生长氧化物;热循环

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(60879018)

作者(Author): 陈亚军,林晓娉,王志平,王立君,董允

DOI: 10.13289/j.issn.1009-6264.2010.11.002

参考文献(References)：

• [1]Chen W R,Wu X,Marple B R,et al.TGO growth behaviour in TBCs with APS and HVOF bond coats[J].Surface and Coatings Technology,2008,202:2677-2683.
• [2]Ajdelsztajn L,Picas J A,Kim G E,et al.Oxidation behavior of HVOF sprayed nanocrystalline NiCrAlY powder[J].Materials Science and Engineering A,2002,338:33-43.
• [3]张丽娟,林晓娉,刘春阳,等.高速微粒轰击对热障涂层热生长氧化物生长过程的影响[J].材料热处理学报,2009,30(3):182-186.ZHANG Li-juan,LIN Xiao-ping,LIU Chun-yang,etal.Effect of high-speed fine particles bombarding on thermally grown oxide growth process of thermal barrier coatings[J].Transactions of Materials and Heat Treatment,2009,30(3):182-186.
• [4]Picas J A,Forna A,Matthhaus G.HVOF coatings as an alternative to hard chrome for pistons and valves[J].Wear,2006,216(5):477-484.
• [5]Koutsky J.High velocity oxy-fuel spraying[J].Journal of Materials Processing Technology,2004,157:557-560.
• [6]Daniel W P,Gerald L K.HVOF-spray technology poised for growth[J].Advanced Materials and Processes,1991(4):68-74.
• [7]Padture N P,Gell M,Jordan E H.Thermal barrier coatings for gas-turbine engine applications[J].Science,2002,296:280-284.
• [8]Rabiei A,Evans A G.Failure mechanisms associated with the thermally grown oxide in plasma-sprayed thermal barrier coatings[J].Acta Materialia,2000,48:3963-3976.
• [9]Leontiev S A,Kuznetsov V G,Rybnikov A I,et al.Structure and properties of protective coating produced by vacuum arc deposition[J].Surface and Coatings Technology,1995,76(13):41-46.
• [10]Movchan B A.Functional graded EB-PVD coatings[J].Surface and Coatings Technology,2002,149:25-27.
• [11]Miller R A.Oxidation-based model for thermal barrier coating life[J].Journal of the American Ceramic Society,1984,67:517-521.
• [12]Ma Q,Clarke D R.Stress measurement in single and polycrystalline ceramics using their optical fluorescence[J].Journal of the American Ceramic Society,1993,76(6):1433-1440.
• [13]Christensen R J,Lipkin D M,Clarkea D R,et al.Nondestructive evaluation of the oxidation stresses through thermal barrier coatings using Cr3+piezospectroscopy[J].Appl Phys Lett,1996,69(24):3754-3756.

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