摘要
针对飞轮支承系统中传统枢轴宝石轴承摩擦副GCr15/Al_(2)O_(3)在更高PV值润滑条件下磨损失效隐患所导致的服役瓶颈,本文探索了以WC-20%Co/Si_(3)N_(4)(硬质合金/高性能陶瓷)构建新摩擦副体系,在油润滑条件下对比了WC-20%Co/Si_(3)N_(4)与GCr15/Al_(2)O_(3)两种摩擦副的磨损性能,并研究了新摩擦副WC-20%Co/Si_(3)N_(4)在磷酸三甲酚酯(TCP)、硫代磷酸三苯酯(TPPT)单剂及其苯并三唑油溶性衍生物(Irgamet 39)复配添加剂的协同润滑机制。研究结果表明,采用单一添加剂TCP时,新摩擦副WC-20%Co/Si_(3)N_(4)的摩擦磨损性能显著优于原摩擦副GCr15/Al_(2)O_(3)。随接触载荷增大与试验时间延长,仅采用单一固体添加剂TPPT替换TCP的减摩耐磨效果不佳,但通过加入Irgamet 39制成复合添加剂润滑油,相比采用单一TCP添加剂时WC-20%Co的磨痕截面积降低了55.2%,Si_(3)N_(4)的磨损体积降低了28.6%,实现了摩擦副WC-20%Co/Si_(3)N_(4)减摩耐磨效果的提升。
To address the service life bottleneck caused by wear failure risks of traditional GCr15/Al_(2)O_(3) tribopairs in flywheel pivot-jewel bearing supporting systems under high PV value lubrication conditions,novel WC-20%Co/Si_(3)N_(4)(cemented carbide/high-performance ceramic)tribopairs were designed in this paper.Comparative analyses were conducted on the wear property between WC-20%Co/Si_(3)N_(4) and GCr15/Al_(2)O_(3) tribopairs under oil lubrication.Furthermore,the synergistic lubrication mechanisms were investigated for the novel WC-20%Co/Si_(3)N_(4) tribopairs using tricresyl phosphate(TCP)and triphenyl phosphorothioate(TPPT)as single additives,as well as benzotriazole oil-soluble derivatives(Irgamet 39)compound formulations.Experimental results demonstrate that the novel WC-20%Co/Si_(3)N_(4) tribopairs exhibit significantly superior friction and wear properties compared to the original GCr15/Al_(2)O_(3) when using a single TCP additive.With the increase in contact load and the extension of test time,the substitution of TCP with a single TPPT solid additive shows inferior friction-reduction and wear-resistance performance.However,by adding Irgamet 39 to make the compound additive lubricant,compared with using a single TCP additive,the wear cross-sectional area of WC-20%Co disc is reduced by 55.2%,and the wear volume of Si_(3)N_(4) is reduced by 28.6%,achieving an improvement in the friction-reduction and wearresistance effect of the WC-20%Co/Si_(3)N_(4) tribopairs.
作者
冯一可
张旭
Feng Yike;Zhang Xu(Institute of Physical and Chemical Engineering of Nuclear Industry,Tianjin 300180,China;National Key Laboratory of Science and Technology of Particle Transport and Separation,Tianjin 300180,China)
出处
《硬质合金》
2025年第3期208-216,253,共10页
Cemented Carbides
基金
粒子输运与富集技术全国重点实验室稳定支持项目(GZ-JTWZ-2023-09)。
关键词
硬质合金
氮化硅
润滑
摩擦磨损
cemented carbide
silicon nitride
lubrication
friction and wear
