Tribological properties of ZrO2 (Y2O3)―Mo―BaF2/CaF2 composites at high temperatures

ZrO2 (Y2O3) composites with different contents of BaF2/CaF2 and Mo were fabricated by hot press sintering, and their tribological behaviour against SiC was investigated from room temperature to 1000 C. It was found that the ZrO2 (Y2O3)-5BaF2/CaF2-10Mo composite possessed excellent self-lubricating a...

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Veröffentlicht in:Tribology international 2012, Vol.45 (1), p.43-49
Hauptverfasser: Kong, Lingqian, Bi, Qinling, Zhu, Shengyu, Yang, Jun, Liu, Weimin
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container_title Tribology international
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creator Kong, Lingqian
Bi, Qinling
Zhu, Shengyu
Yang, Jun
Liu, Weimin
description ZrO2 (Y2O3) composites with different contents of BaF2/CaF2 and Mo were fabricated by hot press sintering, and their tribological behaviour against SiC was investigated from room temperature to 1000 C. It was found that the ZrO2 (Y2O3)-5BaF2/CaF2-10Mo composite possessed excellent self-lubricating and anti-wear properties. At 1000 C, it had a friction coefficient of about 0.28 and wear rate of about 9.46x10 exp(-5) mm3/Nm. The low friction and wear were attributed to enhanced matrix and BaMoO4 formed on the worn surfaces.
doi_str_mv 10.1016/j.triboint.2011.09.008
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subjects Applied sciences
Calcium fluoride
Exact sciences and technology
Friction
Friction, wear, lubrication
Machine components
Mechanical engineering. Machine design
Presses
Silicon carbide
Tribology
Wear
Wear resistance
Zirconium dioxide
title Tribological properties of ZrO2 (Y2O3)―Mo―BaF2/CaF2 composites at high temperatures
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