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Tribology Letters
Erschienen in: Tribology Letters 3/2011

01.09.2011 | Original Paper

Effect of Fluoride Content on Friction and Wear Performance of Ni3Al Matrix High-Temperature Self-Lubricating Composites

verfasst von: Shengyu Zhu, Qinling Bi, Jun Yang, Weimin Liu

Erschienen in: Tribology Letters | Ausgabe 3/2011

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Abstract

The self-lubricating composites Ni3Al–BaF2–CaF2–Ag–Cr, which have varying fluoride contents, were fabricated by the powder metallurgy technique. The effect of fluoride content on the mechanical and tribological properties of the composites was investigated. The results showed that an optimal fluoride content and a balance between lubricity and mechanical strength were obtained. The Ni3Al–6.2BaF2–3.8CaF2–12.5Ag–10Cr composite showed the best friction coefficients (0.29–0.38) and wear rates (4.2 × 10−5–2.19 × 10−4 mm3 N−1 m−1) at a wide temperature range (room temperature to 800°C). Fluorides exhibited a good reduced friction performance at 400 and 600°C. However, at 800°C, the formation of BaCrO4 on the worn surface due to the tribo-chemical reaction at high temperatures provided an excellent lubricating property.
Vorheriger Artikel Achieving Low Tribological Moisture Sensitivity by a-C:Si:Al Carbon-based Coating
Nächster Artikel Low Temperature Nano-Tribological Study on a Functionally Graded Tribological Coating Using Nanoscratch Tests

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Metadaten
Titel
Effect of Fluoride Content on Friction and Wear Performance of Ni3Al Matrix High-Temperature Self-Lubricating Composites
verfasst von
Shengyu Zhu
Qinling Bi
Jun Yang
Weimin Liu
Publikationsdatum
01.09.2011
Verlag
Springer US
Erschienen in
Tribology Letters / Ausgabe 3/2011
Print ISSN: 1023-8883
Elektronische ISSN: 1573-2711
DOI
https://doi.org/10.1007/s11249-011-9812-8

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