Tribological performance of a Ni 3Al matrix self-lubricating composite coating tested from 25 to 1000°C

Muye Niu; Qinling Bi; Jun Yang; Weimin Liu

doi:10.1016/j.surfcoat.2012.03.064

Tribological performance of a Ni ₃Al matrix self-lubricating composite coating tested from 25 to 1000°C

Muye Niu, Qinling Bi, Jun Yang, Weimin Liu

科研成果: 期刊稿件 › 文章 › 同行评审

25 引用（Scopus）

摘要

A Ni ₃Al-Ag-Mo-BaF ₂/CaF ₂ self-lubricating composite coating was fabricated by a powder metallurgical process. The tribological properties of the coating against Si ₃N ₄ were investigated over a wide temperature range (25-1000°C). The results showed that the coating had a low friction coefficient (0.24-0.38) in the entire temperature range. Lubricating mechanism analysis results indicated that Ag took effect at low temperature (below 400°C); BaF ₂/CaF ₂ began to work as a solid lubricant as the temperature raised; and the molybdates, which formed by the fluorides oxidation, act as lubricants at higher temperatures (above 800°C). As a result, the coating expressed a low friction coefficient from 25°C to 1000°C.

源语言	英语
页（从-至）	3938-3943
页数	6
期刊	Surface and Coatings Technology
卷	206
期	19-20
DOI	https://doi.org/10.1016/j.surfcoat.2012.03.064
出版状态	已出版 - 25 5月 2012
已对外发布	是

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title = "Tribological performance of a Ni 3Al matrix self-lubricating composite coating tested from 25 to 1000°C",

abstract = "A Ni 3Al-Ag-Mo-BaF 2/CaF 2 self-lubricating composite coating was fabricated by a powder metallurgical process. The tribological properties of the coating against Si 3N 4 were investigated over a wide temperature range (25-1000°C). The results showed that the coating had a low friction coefficient (0.24-0.38) in the entire temperature range. Lubricating mechanism analysis results indicated that Ag took effect at low temperature (below 400°C); BaF 2/CaF 2 began to work as a solid lubricant as the temperature raised; and the molybdates, which formed by the fluorides oxidation, act as lubricants at higher temperatures (above 800°C). As a result, the coating expressed a low friction coefficient from 25°C to 1000°C.",

keywords = "Friction and wear, High temperature, Powder metallurgical, Self-lubricating composite coating",

author = "Muye Niu and Qinling Bi and Jun Yang and Weimin Liu",

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T1 - Tribological performance of a Ni 3Al matrix self-lubricating composite coating tested from 25 to 1000°C

AU - Niu, Muye

AU - Bi, Qinling

AU - Yang, Jun

AU - Liu, Weimin

PY - 2012/5/25

Y1 - 2012/5/25

N2 - A Ni 3Al-Ag-Mo-BaF 2/CaF 2 self-lubricating composite coating was fabricated by a powder metallurgical process. The tribological properties of the coating against Si 3N 4 were investigated over a wide temperature range (25-1000°C). The results showed that the coating had a low friction coefficient (0.24-0.38) in the entire temperature range. Lubricating mechanism analysis results indicated that Ag took effect at low temperature (below 400°C); BaF 2/CaF 2 began to work as a solid lubricant as the temperature raised; and the molybdates, which formed by the fluorides oxidation, act as lubricants at higher temperatures (above 800°C). As a result, the coating expressed a low friction coefficient from 25°C to 1000°C.

AB - A Ni 3Al-Ag-Mo-BaF 2/CaF 2 self-lubricating composite coating was fabricated by a powder metallurgical process. The tribological properties of the coating against Si 3N 4 were investigated over a wide temperature range (25-1000°C). The results showed that the coating had a low friction coefficient (0.24-0.38) in the entire temperature range. Lubricating mechanism analysis results indicated that Ag took effect at low temperature (below 400°C); BaF 2/CaF 2 began to work as a solid lubricant as the temperature raised; and the molybdates, which formed by the fluorides oxidation, act as lubricants at higher temperatures (above 800°C). As a result, the coating expressed a low friction coefficient from 25°C to 1000°C.

KW - Friction and wear

KW - High temperature

KW - Powder metallurgical

KW - Self-lubricating composite coating

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VL - 206

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JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 19-20

ER -

Tribological performance of a Ni 3Al matrix self-lubricating composite coating tested from 25 to 1000°C

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Tribological performance of a Ni ₃Al matrix self-lubricating composite coating tested from 25 to 1000°C