Fe3O4纳米流体润滑下微织构Si3N4陶瓷摩擦学性能研究
Tribological Properties of Micro-Textured Si3N4 Ceramics under Fe3O4 Nanofluid Lubrication
李志浩 1郭旭红 1张克栋 1王呈栋 1刘同舜1
作者信息
- 1. 苏州大学机电工程学院,江苏苏州 215131
- 折叠
摘要
将纳米流体与微织构相结合是改善Si3N4陶瓷摩擦学性能的1种有效方法,选择合理的纳米流体参数能够显著改善摩擦副间的摩擦状态.利用激光加工技术在Si3N4陶瓷试样表面诱导出锥形微织构形貌,并采用"两步法"制备出不同参数的Fe3O4纳米流体.借助MMW-1D型摩擦磨损试验机,探究不同参数纳米流体在自激电场作用下对微织构试样摩擦磨损性能的影响.通过对平均摩擦系数、对偶球磨损量、试样磨损形貌及下试样磨痕X射线光电子能谱(X-ray photoelectron spectroscopy,XPS)等数据进行分析,发现微织构试样与表面活性剂为月桂亚氨基二丙酸钠(sodium lauriminodipropionate,SLI)、体积分数为0.5%的纳米流体结合后具有最小的平均摩擦系数和对偶球的磨损量,且Si3N4陶瓷试样的磨损情况明显改善.结合摩擦磨损试验的相关结果,揭示纳米流体对微织构试样的减摩及润滑机理.
Abstract
The combination of nanofluid and micro-texture was an effective method to improve the tribological properties of Si3N4 ceramics.The effect of different parameters of nanofluids on the friction and wear properties of micro-textured Si3N4 ceramic specimens under the action of self-excited electric field was investigated with MMW-1D frictional wear test machine.The average friction coefficient,the wear of the grinding balls,the wear morphology of the specimens and the X-ray photoelectron spectroscopy(XPS)of the lower specimens were analyzed.The micro-textured specimens were found to have the lowest average coefficient of friction and wear of the grinding balls when combined with sodium lauriminodipropionate,a surfactant with a volume fraction of 0.5%,and the wear of the Si3N4 ceramic specimens was significantly improved.Combined with the relevant results of tribological tests,the antifriction and lubrication mechanism of nanofluid on micro-textured specimens was revealed.
关键词
纳米流体/微织构/摩擦学性能/磨损形貌/减摩机理Key words
nanofluid/micro-textured/tribological properties/wear morphology/antifriction mechanism引用本文复制引用
基金项目
国家自然科学基金项目(52175429)
中国博士后科学基金项目(2022M712309)
苏州市科技发展计划(人才专项)项目(ZXL2022493)
出版年
2024
NETL
NSTL
万方数据