Fretting Wear Behavior of PVA-Based Hydrogels Under Dry Friction

被引：0

作者：

Xu, Fei ^{[1
]}

Ke, Liao-Liang ^{[1
]}

Su, Jie ^{[1
,2
]}

机构：

[1] Tianjin Univ, Sch Mech Engn, Tianjin 300350, Peoples R China

[2] Natl Key Lab Vehicle Power Syst, Tianjin 300350, Peoples R China

来源：

TRIBOLOGY LETTERS | 2025年 / 73卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Composite hydrogel; Fretting wear; Wear mechanism; Articular cartilage; MECHANICAL-PROPERTIES; POLY(VINYL ALCOHOL); CARTILAGE; DIFFERENTIATION; LUBRICATION; GRAPHENE;

D O I：

10.1007/s11249-025-02013-z

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Hydrogels are ideal substitute materials for articular cartilage. The fretting wear behavior of polyvinyl alcohol (PVA) hydrogel and three types of PVA-based composite hydrogels under dry friction condition is investigated experimentally. Polyvinyl pyrrolidone (PVP), graphene oxide (GO), and multi-walled carbon nanotubes (MWCNTs) are mixed into PVA hydrogels as additives to prepare three composite hydrogels. A sphere-on-flat contact model is established between the PVA-based hydrogel coating and a stainless steel ball. The reciprocating fretting wear equipment is used to conduct fretting tests. Surface wear morphology and wear depth are characterized using three-dimensional (3D) ultra-depth of field microscopy and 3D white-light interference profilometer. The impacts of displacement amplitude, normal force, exposure time, and the number of freeze-thaw cycles on fretting wear behavior of four PVA-based hydrogels are investigated. The results show that the PVA/MWCNTs composite hydrogel exhibits the highest friction coefficient and relatively good wear resistance.

引用

页数：19

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