等离子喷涂物理气相沉积(PS-PVD)热障涂层在高温高速航空煤油燃气热冲击下的失效机制
Failure Mechanism of Plasma Sprayed Physical Vapor Deposition (PS-PVD) Thermal Barrier Coating Under High Temperature and High Velocity Aviation Kerosene Gas Thermal Shock
摘 要
采用等离子喷涂物理气相沉积(PS-PVD)法,在单晶合金叶片表面制备了热障涂层的MCrAlY底层和氧化钇稳定氧化锆(YSZ)面层,采用扫描电镜和能谱仪,分析了其在高温高速航空煤油燃气热冲击下的失效机制。结果表明:YSZ面层为类柱状晶结构;在高温高速航空煤油燃气热冲击下,MCrAlY底层表面形成了连续的热增长氧化膜(TGO),且叶片正面MCrAlY底层表面的TGO厚度明显大于叶片背面的;叶片受燃气直接冲击的区域,YSZ面层发生整体剥落,类柱状晶从根部发生断裂;叶片未受燃气直接冲击的区域,YSZ面层较完整;YSZ面层整体剥落主要是外界环境中的颗粒物进入高温高速燃气中,对热障涂层产生冲蚀造成的。
热障涂层
高温高速
航空煤油燃气
失效机制
plasma sprayed physical vapor deposition (PS-PVD)
thermal barrier coating
high temperature and high speed
aviation kerosene gas
failure mechanism
Abstract
The MCrAlY bottom layer and yttria-stabilized zirconia (YSZ) surface layer of thermal barrier coating were prepared on the surface of single crystal alloy blade by plasma sprayed physical vapor deposition (PS-PVD) method, and its failure mechanism under high temperature and high speed aviation kerosene gas thermal shock was analyzed by scanning electron microscope and energy dispersive spectrometer. The results showed that the YSZ surface layer had a columnar crystal structure, Under the thermal shock of high temperature and high speed aviation kerosene gas, a continuous thermally grown oxide film (TGO) was formed on the surface of MCrAlY bottom layer, and the thickness of TGO on the surface of MCrAlY bottom layer on the front of blade was obviously larger than that on the back of blade. In the area where the blade was directly impacted by the gas, the YSZ surface layer peeled off as a whole, column-like crystals broke from the root. In the area where the blade was not directly impacted by the gas, the YSZ surface layer was relatively complete. The overall peeling of YSZ surface layer was caused by entering of the particles in the external environment into the high-temperature and high-speed gas and eroding the thermal barrier coating.
中图分类号 TG174.4 DOI 10.11973/fsyfh-202206004
所属栏目 试验研究
基金项目
收稿日期 2020/8/6
修改稿日期
网络出版日期
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引用该论文: SONG Guobin,YANG Jinping,DONG Yongjun,CUI Chong. Failure Mechanism of Plasma Sprayed Physical Vapor Deposition (PS-PVD) Thermal Barrier Coating Under High Temperature and High Velocity Aviation Kerosene Gas Thermal Shock[J]. Corrosion & Protection, 2022, 43(6): 20
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【3】PADTURE N P,GELL M,JORDAN E H. Thermal barrier coatings for gas-turbine engine applications[J]. Science,2002,296(5566):280-284.
【4】CAO X Q,VASSEN R,STOEVER D. Ceramic materials for thermal barrier coatings[J]. Journal of the European Ceramic Society,2004,24(1):1-10.
【5】ȽATKA L.Thermal barrier coatings manufactured by suspension plasma spraying-A review[J]. Advances in Materials Science,2018,18(3):95-117.
【6】EVANS A G,MUMM D R,HUTCHINSON J W,et al. Mechanisms controlling the durability of thermal barrier coatings[J]. Progress in Materials Science,2001,46(5):505-553.
【7】陈清宇,李成新,杨冠军,等. PS-PVD工艺中的气相及气/液混合沉积行为[J].热喷涂技术,2016,8(1):44-50.
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【9】邓子谦,刘敏,毛杰,等.等离子喷涂-物理气相沉积射流中粒子状态和分布[J].中国表面工程,2017,30(3):81-88.
【10】GAO L H,GUO H B,WEI L L,et al. Microstructure and mechanical properties of yttria stabilized zirconia coatings prepared by plasma spray physical vapor deposition[J]. Ceramics International,2015,41(7):8305-8311.
【11】GORAL M,KOTOWSKI S,NOWOTNIK A,et al. PS-PVD deposition of thermal barrier coatings[J]. Surface and Coatings Technology,2013,237:51-55.
【12】GORAL M, SIENIAWSKI J, KOTOWSKI S, et al. Influence of turbine blade geometry on thickness of TBCs deposited by VPA and PS-PVD methods[J]. Archives of Materials Science&Engineering, 2012, 54(1):22-28.
【13】SCHMITT M P,HARDER B J,WOLFE D E. Process-structure-property relations for the erosion durability of plasma spray-physical vapor deposition (PS-PVD) thermal barrier coatings[J]. Surface and Coatings Technology,2016,297:11-18.
【14】VABEN R,CERNUSCHI F,RIZZI G,et al. Recent activities in the field of thermal barrier coatings including burner rig testing in the European union[J]. Advanced Engineering Materials,2008,10(10):907-921.
【15】MEI H. Thermal shock damage and microstructure evolution of thermal barrier coatings on mar-M247 superalloy in a combustion gas environment[J]. Metallurgical and Materials Transactions A,2012,43(6):1781-1790.
【16】张永,刘敏,张吉阜,等.燃气热冲击对PS-PVD和APS热障涂层的微结构和隔热性能的影响[J].中国表面工程,2016,29(3):57-64.
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【18】BAI Z M,ZHOU L,LIANG T Q,et al. Hot-corrosion behavior of thermal barrier coated dz125 superalloy exposed to atomized seawater and kerosene[J]. International Journal of Modern Physics B,2010,24(15n16):3155-3160.
【19】DEADMORE D L,LOWELL C E,KOHL F J. The effect of fuel-to-air ratio on burner rig hot corrosion[J]. Corrosion Science,1979,19(6):371-378.
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