| Study on Friction and Wear Behavior of NBR and FKM under Dry Sliding |
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| DOI： |
| Key Words: dry sliding；NBR；FKM；friction and wear mechanism；abrasive wear；adhesive wear |
| Author Name | Affiliation | | WANG Zhe | Shenyang Institute of Engineering | | WANG Shi-jie | Shenyang University of Technology | | WANG Shuang | Liaoning Jianzhu Vocational University | | PAN Ping-ping | Shenyang Institute of Engineering | | WANG Shi | Shenyang Institute of Engineering |
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| Abstract: |
| In this study， the wear mechanism of NBR and FKM against 45# steal surface under dry sliding was investigated by using microcomputer controlled abrasion testing machine.The change of surface morphology，element content and functional group on the abraded surface of NBR and FKM before and after wear was analyzed.The results showed that， the wear mechanism of NBR and FKM were mainly abrasive wear （micro cutting） at low rotation rate， and when the rotation rate was higher than 200 r·min-1，scuffing phenomenon on the worn surface of NBR began to appear，indicating that the wear mechanism was adhesive wear.It was found that the wear resistance of FKM was better than that of NBR.The abrasive wear mechanism for NBR and FKM was similar，and the main physical processes of wear were the macro delamination. At high rotation rate，there was an adhesive transfer between rubber/steel contact surface，and transfer film formed on the steel surface.In the dry friction process，molecular chains of NBR and FKM were broken，the macromolecular radicals were formed and isomerized， and oxidation reactions occurred. |
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