Comparative Study of Thermal Shock Behavior of the Arc Ion Plating NiCrAlY and the Enamel Based Composite Coatings

doi:10.11900/0412.1961.2017.00192

CORC > 金属研究所 > 中国科学院金属研究所

	Comparative Study of Thermal Shock Behavior of the Arc Ion Plating NiCrAlY and the Enamel Based Composite Coatings
	Feng Min 1; Chen Minghui 2; Yu Zhongdi 2; Lv Zhenbo 1; Zhu Shenglong 3; Wang Fuhui 2
刊名	ACTA METALLURGICA SINICA
	2017-12-11
卷号	53 期号:12 页码:1636-1644
关键词	NiCrAlY coating enamel coating thermal shock superalloy
ISSN号	0412-1961
DOI	10.11900/0412.1961.2017.00192
通讯作者	Chen Minghui(mhchen@mail.neu.edu.cn)
英文摘要	From the view of material point, high-temperature protective coatings are divided into the following two categories: ceramic coating and metallic coating. Metallic coating possesses higher toughness and bond strength to the alloy substrate than ceramic coating does. Its protectiveness relies on the formation of a slow-growing and adherent oxide scale at high temperatures. However, with increasing the oxidation time, the oxide scale will experience cracking and spalling as it has grown to the critical thickness. Ceramic coating due to its chemical inertness has been used in many corrosive environments for protection. But the weak interfacial bond and big mismatch of coefficient of thermal expansion with the alloy substrate limit its application in thermal shock environments. Since glass-ceramics combine the generally superior properties of crystallite ceramics with the easy processing of glasses, it is expected that glass-ceramic coating should show a higher spallation resistance than ceramic one under thermal shock. Cast K444 superalloy is widely used in advanced aircraft engine and gas turbine. Its protection from hightemperature oxidation under thermal shock becomes a critic issue. In this work, NiCrAlY and enamel based composite coatings on the K444 superalloy substrate by arc ion plating and spray-firing methods were prepared, respectively. Thermal shock behavior from 900 degrees C to room temperature of these two coatings was studied comparatively. One cycle of thermal shock contained the holding of samples at 900 degrees C for 1.5 h and the following cooling down in air or water. Results indicated that thermal shock resistance of the NiCrAlY coating was low. As the NiCrAlY coating was thermal shocked by water, its oxide scale cracked severely after 30 cyc, and certain crack had already transported the scale and penetrated into the interior of the underlying metallic coating; for the enamel based composite coating, however, its thermal shock resistance was high. No cracks were detected at the coating surface or interior after thermal shock test. Besides, the enamel coating still adhered well with the alloy substrate. The high resistance to thermal shock of the enamel based composite coating originated from: (1) the coefficient of thermal expansion of the enamel based composite coating matched well with that of the alloy substrate; (2) the addition of nano-sized Ni and NiCrAlY metallic particles improved the toughness of the enamel coating, in addition to enhancing its coefficient of thermal expansion.
资助项目	National Natural Science Foundation of China[51471177] ; Fundamental Research Funds for the Central Universities[N160205001]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000416301600010
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/125487]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen Minghui
作者单位	1.Liaoning Shihua Univ, Devis Chem Chem Engn & Environm, Fushun 113001, Peoples R China 2.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Feng Min,Chen Minghui,Yu Zhongdi,et al. Comparative Study of Thermal Shock Behavior of the Arc Ion Plating NiCrAlY and the Enamel Based Composite Coatings[J]. ACTA METALLURGICA SINICA,2017,53(12):1636-1644.
APA	Feng Min,Chen Minghui,Yu Zhongdi,Lv Zhenbo,Zhu Shenglong,&Wang Fuhui.(2017).Comparative Study of Thermal Shock Behavior of the Arc Ion Plating NiCrAlY and the Enamel Based Composite Coatings.ACTA METALLURGICA SINICA,53(12),1636-1644.
MLA	Feng Min,et al."Comparative Study of Thermal Shock Behavior of the Arc Ion Plating NiCrAlY and the Enamel Based Composite Coatings".ACTA METALLURGICA SINICA 53.12(2017):1636-1644.