Effect of thermal-physical properties on the abradability of seal coating under high-speed rubbing condition
文献类型：期刊论文
| 作者 | 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. |
| 刊名 | WEAR
 |
| 出版日期 | 2018-01-15 |
| 卷号 | 394页码:20-29 |
| 关键词 | Aero Engines Wear Compressor Friction Behavior Systems Blade |
| ISSN号 | 0043-1648 |
| 英文摘要 | 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. |
| 学科主题 | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| 资助机构 | State Key Laboratory of Tribology, Tsinghua University [SKLTKF12B15]; National Natural Science Fund Projects, NSFC [50475159] |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79579]  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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