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

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
Format: Artikel
Sprache:eng
Schlagworte:
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
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Zusammenfassung: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.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2011.09.008