引用本文:张佳平,高禩洋,李浩宇,段德莉,李曙,王璐.高速刮擦条件下两种铝基封严涂层的可刮削性[J].中国表面工程,2018,31(6):90~97
ZHANG Jiaping,GAO Siyang,LI Haoyu,DUAN Deli,LI Shu,WANG Lu.Investigation on Abradability of Two Aluminum-based Seal Coatings Under High-speed Rubbing Condition[J].China Surface Engineering,2018,31(6):90~97
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高速刮擦条件下两种铝基封严涂层的可刮削性
张佳平1,2, 高禩洋1, 李浩宇2, 段德莉1, 李曙1, 王璐2
1.中国科学院金属研究所, 沈阳 110043;2.中国航发沈阳黎明航空发动机有限责任公司技术中心, 沈阳 110043
摘要:
目前少有从涂层机械性能角度（如硬度、结合强度等）研究大量应用于我国航空发动机上的Al-BN涂层的材料性能及其在高滑动速度条件下的摩擦学行为。为此，以AlSi-PHb涂层为参比对象，对比了两者的材料性能，并通过自制的高速刮擦试验机对两者与对偶钛合金叶片在高速工况下的摩擦磨损行为进行了研究。结果表明：AlSi-PHb涂层的组织均匀性更好、机械性能更高；Al-BN涂层粘着叶片，AlSi-PHb涂层粘着叶片的同时还强烈地磨损叶片，两种铝基涂层的可刮削性均存在不足；涂层的机械性能对于叶片的损伤形式具有直接影响，机械性能高，则刮擦时摩擦热效应显著，涂层易损伤叶片；反之，则易于粘着叶片。适度的机械性能，是封严涂层获得良好可刮削性的关键所在。
关键词:  封严涂层  摩檫学行为  磨损机制  机械性能
DOI：10.11933/j.issn.1007-9289.20180704002
分类号:TH117.1
基金项目:清华大学摩擦学国家重点实验室开放基金（SKLTKF12B15）
Investigation on Abradability of Two Aluminum-based Seal Coatings Under High-speed Rubbing Condition
ZHANG Jiaping1,2, GAO Siyang1, LI Haoyu2, DUAN Deli1, LI Shu1, WANG Lu2
1.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110043, China;2.AECC Shenyang Liming Aero-Engine Co., Ltd., Shenyang 110043, China
Abstract:
Though Al-BN seal coating was widely used in the aeroengine of our country, little research work was reported on its tribological behaviors under high-speed sliding from the point of coating mechanical properties such as harness and cohesion strength. Therefore, taking AlSi-PHb coating as the reference object, the material properties of the two Al-based seal coatings were compared, and meanwhile, the tribological behaviors of the two coatings coupled with titanium blades were studied by a self-developed high-speed rubbing tester. The results show that the microstructure homogeneity and mechanical properties of the AlSi-PHb coating are better and higher than that of the Al-BN coating. Coating adhesion is the main wear mechanism of the Al-BN coating, while both blade wear and coating adhesion are for AlSi-PHb coating. The two coatings show deficiencies in the respect of abradability. Mechniacal properties have direct effect on the blade wear status. Coating with higher mechanical properties tends to damage the blade, and otherwise coating adhesion mechanism tends to occur. The moderate mechanical properties regulation is beneficial for the better abradability of the seal coating.
Key words:  seal coating  tribological behavier  wear mechanism  mechanical property
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