Tribological properties of low-temperature time-dependent pretreated graphite for mechanical seal pairs in high-speed turbopump
作者机构：School of Mechano-Electronic EngineeringXidian UniversityXi’an 710071China Xi’an Aerospace Propulsion InstituteXi’an 710071China Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing SystemXi’an Jiaotong UniversityXi’an 710049China
出 版 物：《Friction》 (摩擦（英文版）)
年 卷 期：2024年第12卷第2期
页 面：305-318页
核心收录：
学科分类：08[工学] 080101[工学-一般力学与力学基础] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）]
基 金：supported by the National Natural Science Foundation of China(No.52075407) Natural Science Foundation of Shaanxi Province of China(No.2019JM-034)
主 题：graphite low-temperature pretreatment mechanical seal friction and wear
摘 要：The friction coefficient and wear rate of pretreated graphite with liquid nitrogen were obtained by using a ball-on-disk tester,and the wear of GCr15–graphite seal pairs with the low-temperature time-dependent pretreatment was discussed by comparing the wear *** results show that liquid nitrogen pretreatment can affect the hardness and interlayer spacing of *** range of the friction coefficients of pretreated graphite changes from 0.17 to *** the increase of liquid nitrogen pretreatment time,the wear mechanism of graphite would change from dominated three-body wear to adhesion *** experimental results of the mechanical seal with liquid nitrogen pretreatment show that the wear rate of stator is less than 0.00165 mm^(3)·N^(−1)·m^(−1),and the graphite shows a good low-temperature compatibility.
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