Transfer film formation and dissipation and its effect on friction coefficient in NAO friction materials containing FeS2 lubricant

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-04-30 DOI:10.1108/ilt-09-2023-0308

Sangryul Go

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引用次数: 0

Abstract

Purpose

The purpose of this study is to investigate the accumulation process of transfer film formation and dissipation and its effect on friction coefficients in non asbestos organic friction materials with various lubricant FeS₂ contents.

Design/methodology/approach

In total, 2.5%, 5% and 10% FeS₂ were added as lubricating components to the friction materials. Friction tests composed of two stages were conducted for these friction materials, and the friction surfaces of the counterpart discs were examined using scanning electron microscopy.

Findings

The transfer film formation reduced the friction coefficients, and the transfer film dissipation influenced the recovery of the friction coefficients. The effect of a high content of FeS₂ was to promote the transfer film formation at high temperatures and to hinder the transfer film dissipation at low temperatures, thus resulting in a decrease in the friction coefficients at high temperatures together with recovery retardation at low temperatures.

Originality/value

FeS₂ contributed to the transfer film formation at high temperatures in the fade test but hindered the transfer film removal in the recovery test, resulting in the retardation of friction coefficient recovery. The mechanism by which the FeS₂ lubricant component affected the transfer film formation and dissipation was analyzed and attributed to the different levels of FeS₂ pyrolysis at different temperature levels.

查看原文本刊更多论文

含有 FeS2 润滑剂的 NAO 摩擦材料中转移膜的形成和消散及其对摩擦系数的影响

设计/方法/途径在摩擦材料中分别添加了 2.5%、5% 和 10% 的 FeS2 作为润滑成分。结果转移膜的形成降低了摩擦系数，转移膜的消散影响了摩擦系数的恢复。高含量 FeS2 的作用是在高温下促进转移膜的形成，而在低温下阻碍转移膜的消散，从而导致高温下摩擦系数的降低和低温下摩擦系数恢复的迟缓。分析了 FeS2 润滑剂成分影响转移膜形成和消散的机理，并将其归因于不同温度下 FeS2 的热解程度不同。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.