航空煤油柱塞泵摩擦副涂层材料摩擦性能

doi:10.13229/j.cnki.jdxbgxb20191117

摘要/Abstract

摘要：

利用盘-环试验台，在70 ℃航空煤油介质中通过改变载荷p和速度v，研究了两种聚酰亚胺（PI）基涂层和聚四氟乙烯（PTFE）基涂层分别与38CrMoAlA滑动摩擦的摩擦学性能。试验讨论了涂层的磨损因子k^*、线磨损率W_t、极限pv与加载pv之间的关系，并对涂层磨损表面进行了SEM分析，结果表明，磨损因子k^*并非恒定值，而是与涂层的磨损机理有着密切关系，PTFE基涂层与38CrMoAlA滑动摩擦磨损性能更加优异，进而更适合充当航空柱塞泵的摩擦副材料。

关键词: 机械电子工程, 柱塞泵, 涂层, 磨损因子, 磨损机理

Abstract:

Polyimide （PI） and Poly-tetra-fluoroethylene （PTFE） have been widely used in the field of fluid boundary and mixed lubrication because of their excellent self-lubrication properties. The tribological properties of the PI based coatings and PTFE based coatings sliding against on 38CrMoAlA in 70℃ aviation kerosene were studied by altering p and v in this paper. The relationship among the wear factor k^*， the linear wear rate Wt， the limiting pv and the loaded pv was discussed， and the worn surfaces of the coatings was analyzed by SEM. The results show that the wear factor k^* and the limit pv are not constant values， but closely related to the wear mechanism of the coatings. The PTFE based coating against 38CrMoAlA has more excellent friction and wear properties， which make it more suitable for the tribopair material of aviation kerosene piston pump.

Key words: mechanical and electronic engineering, piston pump, coating, wear factor, wear mechanism

中图分类号:

V257

姜继海,赵存然,张冠隆,车明阳. 航空煤油柱塞泵摩擦副涂层材料摩擦性能[J]. 吉林大学学报(工学版), 2021, 51(1): 147-153.

Ji-hai JIANG,Cun-ran ZHAO,Guan-long ZHANG,Ming-yang CHE. Tribological properties of coating materials of tribopairs for aviation kerosene piston pump[J]. Journal of Jilin University(Engineering and Technology Edition), 2021, 51(1): 147-153.

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	PI	PTFE	QT600?3	38CrMoAlA
硬度/HV	180	260	600	720
粗糙度/μm	2.2±1.6	2.4±1.8	0.36	0.36
厚度/μm	45±5	40±3	-	-

试验名称	试验考核指标	涂层材料
试验名称	试验考核指标	PI基涂层	PTFE基涂层
擦伤试验	极限pv值 /（MPa?m?s^-1）	29.904	26.592
恒定载荷试验一	试验pv值 /（MPa?m?s^-1）	9.97	9.97
恒定载荷试验一	磨损因子k^* /（mm³?N^-1?m^-1）	2.84×10^-7	2.98×10^-7
恒定载荷试验二	试验pv值 /（MPa?m?s^-1）	21.99	9.97
恒定载荷试验二	磨损因子k^* /（mm³?N^-1?m^-1）	2.38×10^-6	3.78×10^-7