Investigation of tribological characteristics of nickel alloy-based solid-lubricating composites at elevated temperatures under vacuum

Jinming Zhen; Jun Cheng; Hui Tan; Qichun Sun; Shengyu Zhu; Jun Yang; Weimin Liu

doi:10.1007/s40544-020-0384-1

Investigation of tribological characteristics of nickel alloy-based solid-lubricating composites at elevated temperatures under vacuum

Jinming Zhen, Jun Cheng, Hui Tan, Qichun Sun, Shengyu Zhu, Jun Yang, Weimin Liu

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

The development of a high-performance solid-lubricating composite with excellent self-lubricity over a broad temperature range in vacuum is significant to solve the frictional problems of spatial mechanisms. In this study, the vacuum tribological behaviors of nickel-matrix/Ag/(Ca, Ba)F2/graphite (0–2 wt%) composites were studied from 25 to 800 °C. The results show that the synergistic effects of solid lubricants can significantly improve the tribological properties of the composites in vacuum, with the graphite content contributing considerably. For 2 wt% graphite, a low friction coefficient (0.14–0.25) and the lowest wear rate ((0.12−4.78)×10⁻⁵ mm³·N⁻¹·m⁻¹) were observed in vacuum over the entire testing temperature range. Moreover, the wear mechanisms were clarified via analysis of the chemical composition and morphologies of the sliding surfaces.

Original language	English
Pages (from-to)	990-1001
Number of pages	12
Journal	Friction
Volume	9
Issue number	5
DOIs	https://doi.org/10.1007/s40544-020-0384-1
State	Published - Oct 2021
Externally published	Yes

Keywords

graphite
high temperature
metal matrix composite
solid lubrication
vacuum

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10.1007/s40544-020-0384-1

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title = "Investigation of tribological characteristics of nickel alloy-based solid-lubricating composites at elevated temperatures under vacuum",

abstract = "The development of a high-performance solid-lubricating composite with excellent self-lubricity over a broad temperature range in vacuum is significant to solve the frictional problems of spatial mechanisms. In this study, the vacuum tribological behaviors of nickel-matrix/Ag/(Ca, Ba)F2/graphite (0–2 wt%) composites were studied from 25 to 800 °C. The results show that the synergistic effects of solid lubricants can significantly improve the tribological properties of the composites in vacuum, with the graphite content contributing considerably. For 2 wt% graphite, a low friction coefficient (0.14–0.25) and the lowest wear rate ((0.12−4.78)×10−5 mm3·N−1·m−1) were observed in vacuum over the entire testing temperature range. Moreover, the wear mechanisms were clarified via analysis of the chemical composition and morphologies of the sliding surfaces.",

keywords = "graphite, high temperature, metal matrix composite, solid lubrication, vacuum",

author = "Jinming Zhen and Jun Cheng and Hui Tan and Qichun Sun and Shengyu Zhu and Jun Yang and Weimin Liu",

note = "Publisher Copyright: {\textcopyright} 2020, The author(s).",

year = "2021",

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doi = "10.1007/s40544-020-0384-1",

language = "英语",

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T1 - Investigation of tribological characteristics of nickel alloy-based solid-lubricating composites at elevated temperatures under vacuum

AU - Zhen, Jinming

AU - Cheng, Jun

AU - Tan, Hui

AU - Sun, Qichun

AU - Zhu, Shengyu

AU - Yang, Jun

AU - Liu, Weimin

PY - 2021/10

Y1 - 2021/10

N2 - The development of a high-performance solid-lubricating composite with excellent self-lubricity over a broad temperature range in vacuum is significant to solve the frictional problems of spatial mechanisms. In this study, the vacuum tribological behaviors of nickel-matrix/Ag/(Ca, Ba)F2/graphite (0–2 wt%) composites were studied from 25 to 800 °C. The results show that the synergistic effects of solid lubricants can significantly improve the tribological properties of the composites in vacuum, with the graphite content contributing considerably. For 2 wt% graphite, a low friction coefficient (0.14–0.25) and the lowest wear rate ((0.12−4.78)×10−5 mm3·N−1·m−1) were observed in vacuum over the entire testing temperature range. Moreover, the wear mechanisms were clarified via analysis of the chemical composition and morphologies of the sliding surfaces.

AB - The development of a high-performance solid-lubricating composite with excellent self-lubricity over a broad temperature range in vacuum is significant to solve the frictional problems of spatial mechanisms. In this study, the vacuum tribological behaviors of nickel-matrix/Ag/(Ca, Ba)F2/graphite (0–2 wt%) composites were studied from 25 to 800 °C. The results show that the synergistic effects of solid lubricants can significantly improve the tribological properties of the composites in vacuum, with the graphite content contributing considerably. For 2 wt% graphite, a low friction coefficient (0.14–0.25) and the lowest wear rate ((0.12−4.78)×10−5 mm3·N−1·m−1) were observed in vacuum over the entire testing temperature range. Moreover, the wear mechanisms were clarified via analysis of the chemical composition and morphologies of the sliding surfaces.

KW - graphite

KW - high temperature

KW - metal matrix composite

KW - solid lubrication

KW - vacuum

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DO - 10.1007/s40544-020-0384-1

M3 - 文章

AN - SCOPUS:85090146086

SN - 2223-7690

VL - 9

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EP - 1001

JO - Friction

JF - Friction

IS - 5

ER -

Investigation of tribological characteristics of nickel alloy-based solid-lubricating composites at elevated temperatures under vacuum

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Keywords

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