INVESTIGATION OF HIGH TEMPERATURE HOT CORROSIONBEHAVIOR OF THERMAL BARRIER COATINGS PREPARED BY EB-PVD

J Chin Soc Corr Pro

2002, Vol. 22

Issue (2): 84-87 DOI:

Research Report

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INVESTIGATION OF HIGH TEMPERATURE HOT CORROSIONBEHAVIOR OF THERMAL BARRIER COATINGS PREPARED BY EB-PVD

Xiaofang Bi;Hongbo Guo;Shengkai Gong;Huibing Xv

京航空航天大学材料科学与工程系

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Xiaofang Bi; Hongbo Guo; Shengkai Gong; Huibing Xv. INVESTIGATION OF HIGH TEMPERATURE HOT CORROSIONBEHAVIOR OF THERMAL BARRIER COATINGS PREPARED BY EB-PVD. J Chin Soc Corr Pro, 2002, 22(2): 84-87 .

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Abstract High temperature oxidation and hot corrosion be haviors of MCrAlY coating，thermal barrier coatings (TBCs) and gradient thermal barrier coatings prepared by electron beam physical vapor deposition (EB-PVD) ha ve been investigated.Although these coatings showed excellent oxidation behavior ，the mass gain for MCrAlY coatings was larger after being sprayed with a 2 mg/c m2 deposit of Na2SO4 and tested at 950℃.The lower mass gain for TBCs and GTBCs indicated that the ceramic coating has a benefit to improve the hot corros ion behavior.However，thermal cyclic life time for TBCs and GTBCs decreased duri ng hot corrosion testing.

Key words: EB-PVD gradient thermal barrier coating(GTBC) high temperature oxidation hot corrosion

Received: 03 December 2001

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TG172.82

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	Xiaofang Bi
	Hongbo Guo
	Shengkai Gong
	Huibing Xv

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2002/V22/I2/84

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