Tribological behavior of thermal- and pH-sensitive microgels under steel/CoCrMo alloy contacts

作     者：Kequn SUN Yuanhua HU Yinghui DONG Lulu YAO Ruhong SONG Yufu XU Kequn SUN;Yuanhua HU;Yinghui DONG;Lulu YAO;Ruhong SONG;Yufu XU

作者机构：Institute of TribologySchool of Mechanical EngineeringHefei University of TechnologyHefei 230009China School of Chemistry and Chemical EngineeringHefei University of TechnologyHefei 230009China 

出 版 物：《Friction》 (摩擦（英文版）)

年 卷 期：2023年第11卷第4期

页      面：602-616页

核心收录：

学科分类：0821[工学-纺织科学与工程] 08[工学] 082101[工学-纺织工程] 

基　　金：supported by the National Natural Science Foundation of China(No.51875155) 

主　　题：poly(N-isopropylacrylamide-co-acrylic acid)(PNIPAM-co-PAA) microgel aqueous lubrication thermal-sensitive pH-sensitive 

摘      要：The tribological behavior of 316L stainless steel/CoCrMo alloy contacts under aqueous lubrication was investigated in this *** types of microgels including poly(N-isopropylacrylamide)(PNIPAM),polyacrylic acid(PAA),and poly(N-isopropylacrylamide-co-acrylic acid)(PNIPAM-co-PAA)were prepared and used as lubricant additives in aqueous *** tests were conducted using a ball-on-disk reciprocating tribometer,over a range of temperatures,pH,and concentrations of the *** PNIPAM-co-PAA microgels were proven to have excellent anti-friction and anti-wear properties,depending on the temperature and pH values of the *** maximum friction coefficient coincided with the lower critical solution temperature of the PNIPAM-co-PAA microgels at 32°*** the same time,the friction coefficient increased with the increase in pH value of the lubricant solution with the PNIPAM-co-PAA *** unique thermal-and pH-sensitive properties of the PNIPAM-co-PAA microgels provided a new strategy for controlling the friction and wear of steel/CoCrMo alloy contacts under aqueous lubrication.