银基合金滑环真空载流摩擦特性

doi:10.19976/j.cnki.43-1448/TF.2024092

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Abstract To optimize the material selection for the friction pair of silver-based slip rings, this study selected AgCu alloy, AgCuNi alloy, and Ag-based composite as the ring body materials. These materials were paired with Ag-based and Au-based brush wires to form friction pairs for vacuum current-carrying life experiments. Oscilloscope recorder, digital microscope system, and scanning electron microscope were used to study the electrical contact performance, wear surface morphology, debris morphology and composition of different friction pairs. The results show that AgCu alloy and AgCuNi alloy, when grinding against Ag-based and Au-based brush wires, produce elongated filamentous debris with a layered extrusion morphology. Introducing WS₂ and MoS₂ two-dimensional materials into the Ag alloy ring can change the debris morphology, forming gray-black fine flake-like debris, thus avoiding the generation of filamentous debris at the source of the materials and effectively reducing the risk of slip ring short circuits caused by debris.

Key words： silver-based alloy slip ring composite current-carrying friction debris morphology

Received: 21 October 2024 Published: 08 April 2025

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TG174.2

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	Articles by authors
	ZHANG Shumin
	LIU Lanying
	YU Yide
	WANG Yupeng
	LIU Shuai
	LIU Qingkai

Cite this article:

ZHANG Shumin,LIU Lanying,YU Yide, et al. Friction properties of silver-based alloy slip rings under vacuum current-carrying[J]. Materials Science and Engineering of Powder Metallurgy, 2025, 30(1): 51-59.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2024092 OR http://pmbjb.csu.edu.cn/EN/Y2025/V30/I1/51

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