Tribological behaviors of turbofan seal couples from friction heat perspective under high-speed rubbing condition

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	Tribological behaviors of turbofan seal couples from friction heat perspective under high-speed rubbing condition
	Gao, SY; Xue, WH; Duan, DL; Li, S; Li, S (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
	2016-06-01
发表期刊	FRICTION
ISSN	2223-7690
卷号	4 期号:2 页码:176-190
摘要	The tribological behaviors of two types of seal coatings, nickel-graphite and aluminum-hexagon-boron nitride (Ni-Cg and Al-hBN, respectively) versus a Ti-6Al-4V blade used in turbofan engines were investigated using a high-speed rubbing test. The wear status and damage mechanism of the friction couples were studied and the abradability of the seal coatings was evaluated. By analysis of the coating properties and damage mechanism of the seal couple, the friction heat effect was identified as the key factor influencing blade wear forms as well as coating abradability. A one-dimensional heat conduction model was established to estimate the effect of increasing temperature on the friction interface. The results indicated that in the Ni-Cg and Ti-6Al-4V seal couple, the temperature rising rate (TRR) of the Ti-6Al-4V blade was faster than that of the Ni-Cg coating, and so the Ti-6Al-4V blade softened earlier than the Ni-Cg coating, causing the blade to suffer severe wear. In the Al-hBN and Ti-6Al-4V seal couple, the TRR of the Ti-6Al-4V blade was slower than that of the Al-hBN coating, and so the Al-hBN coating softened first; thus, blade damage was reduced or even replaced by coating adhesion. The square root ratio of thermal diffusivity between the blade and the coating could be taken as an indicator of the ratio of TRR between the blade and coating to predict blade wear status as well as damage mechanism. The results of the model agreed well with the experiment results of the two seal couples used in this study.
部门归属	[gao, siyang ; xue, weihai ; duan, deli ; li, shu] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Seal Coating High-speed Rubbing Wear Mechanism Friction Heat Thermophysical Property
学科领域	Engineering, Mechanical
资助者	State Key Laboratory of Tribology, Tsinghua University [SKLTKF12B15]
收录类别	sci
语种	英语
WOS记录号	WOS:000383013500009
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/76329
专题	中国科学院金属研究所
通讯作者	Li, S (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Gao, SY,Xue, WH,Duan, DL,et al. Tribological behaviors of turbofan seal couples from friction heat perspective under high-speed rubbing condition[J]. FRICTION,2016,4(2):176-190.
APA	Gao, SY,Xue, WH,Duan, DL,Li, S,&Li, S .(2016).Tribological behaviors of turbofan seal couples from friction heat perspective under high-speed rubbing condition.FRICTION,4(2),176-190.
MLA	Gao, SY,et al."Tribological behaviors of turbofan seal couples from friction heat perspective under high-speed rubbing condition".FRICTION 4.2(2016):176-190.