Synergistic effect of graphene and β-Si3N4 whisker enables Si3N4 ceramic composites to obtain ultra-low friction coefficient

被引：13

作者：

Chen, Fei ^{[1
]}

Yan, Ke ^{[1
]}

Hong, Jun ^{[1
]}

Song, Jingdong ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, Key Lab Educ Minist Modern Design & Rotor Bearing, Xian 710049, Peoples R China

[2] Xi An Jiao Tong Univ, Inst Aeronaut Engine, Sch Mech Engn, Xian 710049, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2023年 / 178卷

基金：

中国国家自然科学基金;

关键词：

Tribological properties; Coefficient of friction; Multilayer graphene; Whisker; SILICON-NITRIDE; TRIBOLOGICAL PERFORMANCE; MECHANICAL-PROPERTIES; FABRICATION; WEAR; NANOCOMPOSITES; FRACTURE; CONTACT; FILLERS;

D O I：

10.1016/j.triboint.2022.108045

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This work aimed to further enhance the tribological properties of Si3N4-based ceramics by introducing beta-Si3N4 whisker (beta-Si3N4w) into multilayer graphene (MLG)/Si3N4 ceramics to inhibit the reduction in the hardness of ceramic matrix induced by MLG. Therefore, the Si3N4 ceramics containing 1 wt% MLG and 1-5 wt% beta-Si3N4w were prepared. The tribological properties of specimens at room temperature were evaluated using a ball-disk rotating tribo-tester. The coefficient of friction (COF) and wear resistance of MLG/beta-Si3N4w/Si3N4 ceramic composites (MwSNCC) were analyzed. The existence of MLG and beta-Si3N4w enabled the dry sliding COF of MwSNCC to notably reduce to 0.04-0.07, which was 89.43-95.40% lower than that of monolithic Si3N4 ce-ramics, and the wear resistance was enhanced by 33-62.40%.

引用

页数：9

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