Effect of thermal-physical properties on the abradability of seal coating under high-speed rubbing condition

IMR OpenIR

	Effect of thermal-physical properties on the abradability of seal coating under high-speed rubbing condition
	Gao, SY; Xue, WH; Duan, DL; Li, S; Zheng, HL; Duan, DL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
	2018-01-15
发表期刊	WEAR
ISSN	0043-1648
卷号	394 页码:20-29
摘要	The tribological behaviours of two seal coatings (NiAl-hBN and Al-hBN) against Ti-6Al-4V blade were investigated under high-speed rubbing conditions by a self-developed tribology tester. The wear behaviour and the mechanism of the blades and seal coatings were studied. The maximum possible temperature (MPT) and the temperature rising rate (TRR) at the rubbing surface, which were both directly related to the mechanical strength of coating and blade, were identified as two key factors influencing the blade wear performance and the coating abradability. The MPT of Al-hBN coating was limited to a rather low level and the coating temperature resistance was poor. Hence, the coating was initially softened and blade wear was reduced or even replaced by adhesion of Al-hBN coating. The MPT of NiAl-hBN coatings could be relatively high and the TRR of NiAl-hBN was much smaller than the blade. Hence, the blade lost its mechanical superiority over the coating and was severely damaged. A dimensionless number N-T was proposed based on the thermal-physical parameters of blade and coating to represent MPT and TRR and predict the degree of blade wear. The theory agreed well with the wear performance of blades coupled with NiAl-hBN and Al-hBN, as well as with other seal coatings, such as Ni-Cg and AlSi-polyester.; The tribological behaviours of two seal coatings (NiAl-hBN and Al-hBN) against Ti-6Al-4V blade were investigated under high-speed rubbing conditions by a self-developed tribology tester. The wear behaviour and the mechanism of the blades and seal coatings were studied. The maximum possible temperature (MPT) and the temperature rising rate (TRR) at the rubbing surface, which were both directly related to the mechanical strength of coating and blade, were identified as two key factors influencing the blade wear performance and the coating abradability. The MPT of Al-hBN coating was limited to a rather low level and the coating temperature resistance was poor. Hence, the coating was initially softened and blade wear was reduced or even replaced by adhesion of Al-hBN coating. The MPT of NiAl-hBN coatings could be relatively high and the TRR of NiAl-hBN was much smaller than the blade. Hence, the blade lost its mechanical superiority over the coating and was severely damaged. A dimensionless number N-T was proposed based on the thermal-physical parameters of blade and coating to represent MPT and TRR and predict the degree of blade wear. The theory agreed well with the wear performance of blades coupled with NiAl-hBN and Al-hBN, as well as with other seal coatings, such as Ni-Cg and AlSi-polyester.
部门归属	[gao, siyang ; xue, weihai ; duan, deli ; li, shu] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china ; [zheng, hailiang] aviat ind corp china, shenyang engine design inst, shenyang 110015, liaoning, peoples r china
关键词	Aero Engines Wear Compressor Friction Behavior Systems Blade
学科领域	Engineering, Mechanical ; Materials Science, Multidisciplinary
资助者	State Key Laboratory of Tribology, Tsinghua University [SKLTKF12B15]; National Natural Science Fund Projects, NSFC [50475159]
收录类别	SCI
语种	英语
WOS记录号	WOS:000425372500003
引用统计	被引频次：19[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/321006/79579
专题	中国科学院金属研究所
通讯作者	Duan, DL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Gao, SY,Xue, WH,Duan, DL,et al. Effect of thermal-physical properties on the abradability of seal coating under high-speed rubbing condition[J]. WEAR,2018,394:20-29.
APA	Gao, SY,Xue, WH,Duan, DL,Li, S,Zheng, HL,&Duan, DL .(2018).Effect of thermal-physical properties on the abradability of seal coating under high-speed rubbing condition.WEAR,394,20-29.
MLA	Gao, SY,et al."Effect of thermal-physical properties on the abradability of seal coating under high-speed rubbing condition".WEAR 394(2018):20-29.