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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
ISSN0043-1648
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
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.
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