Bio-based ionic liquid crystal for stainless steel-sapphire high temperature ultralow friction

被引：14

作者：

Aviles, M. D. ^{[1
]}

Carrion, F. J. ^{[1
]}

Sanes, J. ^{[1
]}

Bermudez, M. D. ^{[1
]}

机构：

[1] Univ Politecn Cartagena, Grp Ciencia Mat & Ingn Met, Cartagena 30202, Spain

来源：

WEAR | 2021年 / 484卷

关键词：

Sliding friction; Lubricated wear; Steel; Sapphire; Ionic liquid crystal; Temperature; GLOBAL ENERGY-CONSUMPTION; LUBRICANTS; WEAR; BEHAVIOR;

D O I：

10.1016/j.wear.2021.204020

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the present work, the biobased protic ionic liquid crystal bis(2-hydroxyethyl) ammonium palmitate (DPA) has been studied as neat lubricant under linear reciprocating sliding at 75 degrees C, in the liquid crystalline region, and at 110 degrees C, above its melting point. Three different tribopairs have been studied using AISI 52100 steel, AISI 316L stainless steel and sapphire balls against AISI 316L disks. Tribological results at 75 degrees C are in agreement with the different sliding pairs and contact conditions. At 110 degrees C, a sharp friction coefficient reduction to reach an ultralow steady state value of 0.007-0.009, is observed for the sapphire-AISI 316L contact. Wear rate is also reduced in one order of magnitude. Results are related to water content in DPA, as determined by TG-MS. Wear mechanism are discussed upon the basis of optical and scanning electron microscopy (SEM/EDX) and of surface analysis by XPS.

引用

页数：8

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