Ni 3Al matrix composite with lubricious tungstate at high temperatures

Shengyu Zhu; Qinling Bi; Jun Yang; Weimin Liu

doi:10.1007/s11249-011-9885-4

Ni ₃Al matrix composite with lubricious tungstate at high temperatures

Shengyu Zhu, Qinling Bi, Jun Yang, Weimin Liu

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

25 Scopus citations

Abstract

Ni ₃Al-Ag-BaF ₂/CaF ₂-W composites were fabricated by the powder metallurgy route, and their tri-bological properties over a wide temperature range, starting from room temperature up to 800 °C, were investigated. The Ni3Al matrix composite with 15 wt% BaF ₂/CaF ₂ exhibited a favorable friction coefficient (range 0.3-0.4) and wear rate (0.2-6.2 × 10 ^-4mm ³ N ^-1 m ^-1). The formation of BaWO4 and CaWO4 with lubricity on the worn surface due to a tribo-chemical reaction at high temperatures provided excellent lubricating properties. The low friction coefficient over a broad temperature range could be attributed to the synergistic effect of Ag, BaF ₂/CaF ₂, BaWO ₄, and CaWO ₄.

Original language	English
Pages (from-to)	251-255
Number of pages	5
Journal	Tribology Letters
Volume	45
Issue number	2
DOIs	https://doi.org/10.1007/s11249-011-9885-4
State	Published - Feb 2012
Externally published	Yes

Keywords

Ni Al
Tribology
Tungstate
W

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title = "Ni 3Al matrix composite with lubricious tungstate at high temperatures",

abstract = "Ni 3Al-Ag-BaF 2/CaF 2-W composites were fabricated by the powder metallurgy route, and their tri-bological properties over a wide temperature range, starting from room temperature up to 800 °C, were investigated. The Ni3Al matrix composite with 15 wt% BaF 2/CaF 2 exhibited a favorable friction coefficient (range 0.3-0.4) and wear rate (0.2-6.2 × 10 -4mm 3 N -1 m -1). The formation of BaWO4 and CaWO4 with lubricity on the worn surface due to a tribo-chemical reaction at high temperatures provided excellent lubricating properties. The low friction coefficient over a broad temperature range could be attributed to the synergistic effect of Ag, BaF 2/CaF 2, BaWO 4, and CaWO 4.",

keywords = "Ni Al, Tribology, Tungstate, W",

author = "Shengyu Zhu and Qinling Bi and Jun Yang and Weimin Liu",

year = "2012",

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doi = "10.1007/s11249-011-9885-4",

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volume = "45",

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TY - JOUR

T1 - Ni 3Al matrix composite with lubricious tungstate at high temperatures

AU - Zhu, Shengyu

AU - Bi, Qinling

AU - Yang, Jun

AU - Liu, Weimin

PY - 2012/2

Y1 - 2012/2

N2 - Ni 3Al-Ag-BaF 2/CaF 2-W composites were fabricated by the powder metallurgy route, and their tri-bological properties over a wide temperature range, starting from room temperature up to 800 °C, were investigated. The Ni3Al matrix composite with 15 wt% BaF 2/CaF 2 exhibited a favorable friction coefficient (range 0.3-0.4) and wear rate (0.2-6.2 × 10 -4mm 3 N -1 m -1). The formation of BaWO4 and CaWO4 with lubricity on the worn surface due to a tribo-chemical reaction at high temperatures provided excellent lubricating properties. The low friction coefficient over a broad temperature range could be attributed to the synergistic effect of Ag, BaF 2/CaF 2, BaWO 4, and CaWO 4.

AB - Ni 3Al-Ag-BaF 2/CaF 2-W composites were fabricated by the powder metallurgy route, and their tri-bological properties over a wide temperature range, starting from room temperature up to 800 °C, were investigated. The Ni3Al matrix composite with 15 wt% BaF 2/CaF 2 exhibited a favorable friction coefficient (range 0.3-0.4) and wear rate (0.2-6.2 × 10 -4mm 3 N -1 m -1). The formation of BaWO4 and CaWO4 with lubricity on the worn surface due to a tribo-chemical reaction at high temperatures provided excellent lubricating properties. The low friction coefficient over a broad temperature range could be attributed to the synergistic effect of Ag, BaF 2/CaF 2, BaWO 4, and CaWO 4.

KW - Ni Al

KW - Tribology

KW - Tungstate

KW - W

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U2 - 10.1007/s11249-011-9885-4

DO - 10.1007/s11249-011-9885-4

M3 - 文章

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SN - 1023-8883

VL - 45

SP - 251

EP - 255

JO - Tribology Letters

JF - Tribology Letters

IS - 2

ER -

Ni ₃Al matrix composite with lubricious tungstate at high temperatures

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Keywords

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