粘结层和陶瓷层厚度对纳米结构热障涂层性能的影响

表面技术 , 2013, 42(1): 17-41.

粘结层和陶瓷层厚度对纳米结构热障涂层性能的影响

何箐 ^1, , 李嘉 ^2, , 詹华 ^3, , 汪瑞军 ^4, , 王伟平 ^5,

1.中国农业机械化科学研究院表面工程技术研究所,北京100083

2.中国农业机械化科学研究院表面工程技术研究所,北京100083

3.中国农业机械化科学研究院表面工程技术研究所,北京100083

4.中国农业机械化科学研究院表面工程技术研究所,北京100083

5.中国农业机械化科学研究院表面工程技术研究所,北京100083

关键词：热障涂层 , 陶瓷层厚度 , 层厚比 , 热循环寿命

Effects of Thickness of Bond Coat and Ceramic Coating on the Properties of Nano-structure Thermal Barrier Coatings

采用超音速火焰喷涂+大气等离子喷涂工艺,在K403高温合金表面制备不同层厚比的NiCrAlY/纳米7YSZ热障涂层,研究了涂层厚度变化对热障涂层表面粗糙度、结合强度、热震性能和热循环寿命的影响规律.结果表明:当粘结层厚度一定时,随着陶瓷层厚度的增加,其表面粗糙度增加,涂层结合强度下降；当粘结层厚度为50 μm时,热障涂层的抗热震性能随陶瓷层厚度增加而降低,粘结层厚度提高至100 μm时,热障涂层的抗热震性能随陶瓷层厚度增加先提高,后降低,热障涂层在1100℃的热循环寿命测试结果也基本对应这一规律；当粘结层厚50μm且陶瓷层/粘结层的层厚比在(1～2)∶1的范围内,或者粘结层厚100 μm且陶瓷层/粘结层的层厚比在(2～2.5)∶1范围内时,热障涂层具有较优异的性能.

参考文献

[1]	MEIER S M;GUPTA D K .The Evolution of Thermal Barrier Coatings in Gas Turbine Engine Applications[J].Transactions of the ASME,1994,116:250-257.
[2]	Clarke DR. .Materials selection guidelines for low thermal conductivity thermal barrier coatings[J].Surface & Coatings Technology,2003(0):67-74.
[3]	David R. Clarke;Simon R. Phillpot .Thermal barrier coating materials[J].Materials Today,2005(6):22-29.
[4]	Nitin P. Padture;Maurice Gell;Eric H. Jordan .Thermal Barrier Coatings for Gas-Turbine Engine Applications[J].Science,2002(5566):280-284.
[5]	MURPHYA K S;MORE K L;LANCE M J.As-deposited Mixed Zone in Thermally Grown Oxide Beneath a Thermal Barrier Coating[J].Surface and Coatings Technology,2001(146/147):152-161.
[6]	P. Y. Hou .Segregation behavior at TGO/bondcoat interfaces[J].Journal of Materials Science,2009(7):1711-1725.
[7]	Balint DS;Xu T;Hutchinson JW;Evans AG .Influence of bond coat thickness on the cyclic rumpling of thermally grown oxides[J].Acta materialia,2006(7):1815-1820.
[8]	TAYLOR T A;APPLEBY D L;WEATHERILL A E.Plasma Sprayed Yttria Stabilized Zirconia Coatings:Structure Property Relationships[J].Surface and Coatings Technology,1990(43/44):470-480.
[9]	Choi HM.;Choi WK.;Choi DG.;Choi SK.;Kim JC.;Park YK.;Kim GM.;Kang BS. .Effect of the thickness of plasma-sprayed coating on bond strength and thermal fatigue characteristics[J].Journal of Materials Science,1998(24):5895-5899.
[10]	AHRENS M;LAMPENSCHERF S;VASSEN R et al.Sintering and Creep Processes in Plasma-sprayed Thermal Barrier Coatings[J].Journal of Thermal Spray Technology,2004,13(03):432-442.

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