滑滚比对Cu/Cu对滚配副载流摩擦性能的影响

doi:10.11896/cldb.22040041

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Abstract Slip-roll ratio was an important factor affecting the rolling contact. In this work, current-carrying tribology performance of Cu/Cu rolling pairs were studied under different slip-roll conditions. With the increase of slip-roll ratio, the average current-carrying friction coefficient increased, the contact resistance decreased first and then remained stable, and the width of wear mark increased. As a comparison, the mechanical friction coefficient at the same slip-roll ratio without current changed in the similar trends but the value was lower. The increase of slip-roll ratio promoted the fatigue wear, and the degree of surface oxidation decreased due to the fatigue spalling of material. The slip-roll led to obvious plastic deformation of subsurface layer. By comparing the results with and without current, it was found that the current aggravated surface fatigue and plastic deformation of the subsurface which may be related to the Joule heating-induced material weakening. The slip-roll could enhance the electrical conductivity but cause drastic fatigue damage, and the participation of current promoted the material damage. How to control the slip-roll ratio is a key challenge for future design of rolling conductive rotary joints.

Key words： slip-roll ratio current-carrying tribology contact resistance wear

Published: 10 November 2023 Online: 2023-11-10

CLC number:

TH117.1

Fund:Natural Science Foundation of Henan Province (202300410123), the National Natural Science Foundation of China (U1804252) and Key Program of Higher Education of Henan Province (21A430012).

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	Articles by authors
	ZENG Zexiang
	SONG Chenfei
	WU Haihong
	LYU Bin
	SUN Chao
	PANG Xianjuan
	ZHANG Yongzhen

Cite this article:

ZENG Zexiang,SONG Chenfei,WU Haihong, et al. Effect of Slip-Roll Ratio on the Current-Carrying Tribology Performance of Cu/Cu Rolling Pairs[J]. Materials Reports, 2023, 37(21): 22040041-6.

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http://www.mater-rep.com/EN/10.11896/cldb.22040041 OR http://www.mater-rep.com/EN/Y2023/V37/I21/22040041

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