表面处理对热障涂层界面微结构的影响
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摘要
采用真空电弧离子镀技术在单晶高温合金DD32上制备HY5金属粘结层,通过振动光饰、吹砂2种不同的表面处理方法改变粘结层表面状态,再在粘结层表面利用电子束物理气相沉积技术制备陶瓷层。研究了不同处理方法对粘结层表面状态的影响;测试了不同表面处理方法下制备的热障涂层的高温氧化性能并对比分析了它们的变化规律。此外,探讨了不同表面处理方法对界面元素成分及失效特征的影响。研究结果表明,通过表面处理可以去除粘结层表面较大的凸起,提高表面平整度,提高热障涂层抗氧化性能。与粗糙界面相比,光滑界面形成的TGO层均匀致密,Al含量高。经长时间的高温氧化后,粗糙界面的TGO层出现明显皱曲现象,陶瓷层开裂剥落。
The boat coating of HY5 prepared by arc ion plating was deposited on DD32 alloy substrate. The surface were treated by vibratory polished(VS) and grit-blasted, and then YSZ was deposited on the bond coating by EB-PVD. The microstructures of the bond coating by different surface treatments were investigated. The oxidation resistance of TBCs was measured and compared. Furthermore, effects of surface on interface elementary composition and failure characteristic were studied. The results indicate that both surface treatments can improve the bond coating surface and lead to better oxidation resistance. Compared with TBCs treated by vibratory polished(VS) and grit-blasted, the scale morphology was uniformon flat surfaces. After high temperature oxidation, wrinkling appeared on TGO with rough interface.
The boat coating of HY5 prepared by arc ion plating was deposited on DD32 alloy substrate. The surface were treated by vibratory polished(VS) and grit-blasted, and then YSZ was deposited on the bond coating by EB-PVD. The microstructures of the bond coating by different surface treatments were investigated. The oxidation resistance of TBCs was measured and compared. Furthermore, effects of surface on interface elementary composition and failure characteristic were studied. The results indicate that both surface treatments can improve the bond coating surface and lead to better oxidation resistance. Compared with TBCs treated by vibratory polished(VS) and grit-blasted, the scale morphology was uniformon flat surfaces. After high temperature oxidation, wrinkling appeared on TGO with rough interface.
引文
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[16]姚国凤,丁艳霞,王敏.界面形貌对残余应力的影响[J].吉林大学学报(工),2009,39(3):704-707.YAO Guofeng,DING Yanxia,WANG Min.Effect of interface topography on residual stress[J].Journal of Jilin University(Engineering a n d T e c h n o l o g y E d i t i o n),2009,39(3):704-707.
[17]GIL A,SHEMET V,VASSEN R,etal.Effect of surface condition on the oxidation behaviour of MCr Al Y coatings[J].Surface&Coatings Technology,2006,201(7):3824-3828.
[18]何利民.高温防护涂层技术[M].北京:国防工业出版社,2012.HE Limin.High temperature protective coating technology[M].Beijing:National Defense Industry Press,2012.
[19]EVANSA G,HEM Y,HUTCHINSON J W.Mechanics-based scaling laws for the durability of thermal barrier coatings[J].Progress in Materials Science,2001,46(3-4):249-271.
[20]CHOI S R,HUTCHINSON J W,EVANS A G.Delamination of multilayer thermal barrier coatings[J].Mechanics of Materials,1999,31(7):431-447.
[21]HE M Y,HUTCHINSON J W,EVANS A G.Simulation of stresses and delamination in a plasma-sprayed thermal barrier system upon thermal cycling[J].Materials Science&Engineering A,2003,345(1):172-178.
[22]HE M Y,EVANS A G,HUTCHINSON J W.The ratcheting of compressed thermally grown thin films on ductile substrates[J].Acta Materialia,2000,48(10):2593-2601.
[2]郑蕾,郭洪波,郭磊,等.新一代超高温热障涂层研究[J].航空材料学报,2012,32(6):14-24.ZHENG Lei,GUO Hongbo,GUO Lei,et al.New generation thermal barrier coatings for ultrahigh temperature applications[J].Journal of Aeronautical Materials,2012,32(6):14-24.
[3]曹学强.热障涂层新材料和新结构[M].北京:科学出版社,2016.CAO Xueqiang.New materials and new structure of thermal barrier coating[M].Beijing:Science Press,2016.
[4]牟仁德,陆峰,何利民,等.热障涂层技术在航空发动机上的应用与发展[J].热喷涂技术,2009,1(1):53-58.MU Rende,LU Feng,HE Limin,et al.Application and development of thermal barrier coatings on aeroengines[J].Thermal Spray Technology,2009,1(1):53-58.
[5]牟仁德,贺世美,何利民.微叠层结构EB-PVD热障涂层[J].航空材料学报,2009,29(3):55-60.MU Rende,HE Shimei,HE Limin.EB-PVD thermal barrier coatings with microlaminated structure[J].Journal of Aeronautical Materials,2009,29(3):55-60.
[6]GELLA M,JORDANB E,VAIDYANATHAN K,et al.Bond strength,bond stress and spallation mechanisms of thermal barrier coatings[J].Surface and Coatings Technology,1999,120/121:53-60.
[7]陈慧君,李其连,程旭东,等.TGO对热障涂层失效的作用分析[J].材料保护,2012,45(3):5-7.CHEN Huijun,LI Qilian,CHENG Xudong,et al.Analysis of the role of TGO on the thermal barrier coatings failure[J].Materials Protection,2012,45(3):5-7.
[8]KARLSSON A M,XU T,EVANS A G.The effect of the thermal barrier coating on the displacement instability in thermal barrier systems[J].Acta Materialia,2002,50(5):1211-1218.
[9]CHIRIVI L,NICHOLLS J R.Influence of surface finish on the cyclic oxidation lifetime of an EB-PVD TBC,deposited on Pt Al and Ptdiffused bondcoats[J].Oxidation of Metals,2014,81(1):17-31.
[10]FRANKE B,SOHN Y H,CHEN X,et al.Monitoring damage evolution in thermal barrier coatings with thermal wave imaging[J].Surface&Coatings Technology,2005,200(5-6):1292-1297.
[11]NAUMENKO D,SHEMET V,SINGHEISER L,et al.Failure mechanisms of thermal barrier coatings on MCr Al Y-type bondcoats associated with the formation of the thermally grown oxide[J].Journal of Materials Science,2009,44(7):1687-1703.
[12]CHEN W R,ARCHER R,HUANG X,et al.TGO growth and crack propagation in a thermal barrier coating[J].Journal of ThermalSpray Technology,2008,17(5):858-864.
[13]李美姮,张重远,孙晓峰,等.EB-PVD热障涂层的热循环失效机理[J].材料工程,2002(8):35-41.LI Meiheng,ZHANG Zhongyuan,SUN Xiaofeng,et al.Failure mechanism of EB-PVD thermal barrier coating subjected to thermal cycling[J].Journal of Materials Engineering,2002(8):35-41.
[14]GUPTA M,SKOGSBERG K,NYLéN P.Influence of topcoat-bondcoat interface roughness on stresses and lifetime in thermal barrier coatings[J].Journal of Thermal Spray Technology,2014,23(1):170-181.
[15]韩玉君,叶福兴,陆冠雄,等.热障涂层界面化合物与残余应力演变研究[J].稀有金属材料与工程,2014(5):1148-1152.HAN Yujun,YE Fuxing,LU Guanxiong,et al.Phase composition at the interface and its residual stress evolution of thermal barrier coations[J].Rare Metal Materials and Engineering,2014(5):1148-1152.
[16]姚国凤,丁艳霞,王敏.界面形貌对残余应力的影响[J].吉林大学学报(工),2009,39(3):704-707.YAO Guofeng,DING Yanxia,WANG Min.Effect of interface topography on residual stress[J].Journal of Jilin University(Engineering a n d T e c h n o l o g y E d i t i o n),2009,39(3):704-707.
[17]GIL A,SHEMET V,VASSEN R,etal.Effect of surface condition on the oxidation behaviour of MCr Al Y coatings[J].Surface&Coatings Technology,2006,201(7):3824-3828.
[18]何利民.高温防护涂层技术[M].北京:国防工业出版社,2012.HE Limin.High temperature protective coating technology[M].Beijing:National Defense Industry Press,2012.
[19]EVANSA G,HEM Y,HUTCHINSON J W.Mechanics-based scaling laws for the durability of thermal barrier coatings[J].Progress in Materials Science,2001,46(3-4):249-271.
[20]CHOI S R,HUTCHINSON J W,EVANS A G.Delamination of multilayer thermal barrier coatings[J].Mechanics of Materials,1999,31(7):431-447.
[21]HE M Y,HUTCHINSON J W,EVANS A G.Simulation of stresses and delamination in a plasma-sprayed thermal barrier system upon thermal cycling[J].Materials Science&Engineering A,2003,345(1):172-178.
[22]HE M Y,EVANS A G,HUTCHINSON J W.The ratcheting of compressed thermally grown thin films on ductile substrates[J].Acta Materialia,2000,48(10):2593-2601.