Preparation and wide temperature range tribological behavior of VN-Ag-MoO<sub>3</sub> composites

WANG Liping; CHEN Shu; LIU Eryong; DU Shuangming; DU Huiling; CAI Hui

doi:10.13801/j.cnki.fhclxb.20210208.001

Volume 38 Issue 12

Dec. 2021

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WANG Liping, CHEN Shu, LIU Eryong, et al. Preparation and wide temperature range tribological behavior of VN-Ag-MoO3 composites[J]. Acta Materiae Compositae Sinica, 2021, 38(12): 4212-4219. doi: 10.13801/j.cnki.fhclxb.20210208.001

Citation:

WANG Liping, CHEN Shu, LIU Eryong, et al. Preparation and wide temperature range tribological behavior of VN-Ag-MoO₃ composites[J]. Acta Materiae Compositae Sinica, 2021, 38(12): 4212-4219. doi: 10.13801/j.cnki.fhclxb.20210208.001

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Preparation and wide temperature range tribological behavior of VN-Ag-MoO₃ composites

doi: 10.13801/j.cnki.fhclxb.20210208.001

WANG Liping^1
,,
CHEN Shu^{1, 2
,},
LIU Eryong^{1
,
,},
DU Shuangming^1
,,
DU Huiling^1
,,
CAI Hui^1
,

1.
School of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
2.
Xi’an Aviation Brake Technology CO. LTD., Xingping 713100, China

Received Date: 2020-12-17
Accepted Date: 2021-01-27

Available Online: 2021-02-08

Publish Date: 2021-12-01

Abstract

Abstract

VN-Ag-MoO₃ composites were prepared by vacuum hot pressing sintering. The effects of Ag₂MoO₄ on the microstructure and wide temperature range friction and wear properties of VN matrix composites were investigated. The results show that the structure of VN-Ag-MoO₃ composite is relatively compact, mainly composed of VN, MoO₃ and Ag, and the MoO₃ and Ag distributed evenly in VN matrix are formed by the decomposition of Ag₂MoO₄ at high temperature. Friction and wear tests in a wide temperature range show that the addition of Ag₂MoO₄ can effectively improve the friction and wear properties of VN ceramics in the temperature range of room temperature (RT)-700℃. The friction coefficient (0.285) and wear rate (1.37×10⁻⁵ mm³/(N·m)) of VN-10Ag-MoO₃ with 10wt% Ag₂MoO₄ at 700℃ are 23% and 72% lower than those of VN, respectively, which are attributed to the excellent lubrication and wear reduction effects of high temperature lubrication phases such as vanadium oxide, silver vanadate and silver molybdate on the wear surface.
- nonmetallic matrix composites,
- oxide,
- vacuum sintering,
- wide temperature range tribological behavior,
- tribology
Long Abstrsct
Innovation Points

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References(23)

References

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