High-temperature frictional wear behavior of MCrAlY-based coatings deposited by atmosphere plasma spraying

Chong Tao; Lei Wang; Xiu Song

doi:10.1007/s12613-017-1399-0

Volume 24 Issue 2

Feb. 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(2): 222-228

Chong Tao, Lei Wang, and Xiu Song, High-temperature frictional wear behavior of MCrAlY-based coatings deposited by atmosphere plasma spraying, Int. J. Miner. Metall. Mater., 24(2017), No. 2, pp. 222-228. https://doi.org/10.1007/s12613-017-1399-0

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Chong Tao, Lei Wang, and Xiu Song, High-temperature frictional wear behavior of MCrAlY-based coatings deposited by atmosphere plasma spraying, Int. J. Miner. Metall. Mater., 24(2017), No. 2, pp. 222-228. https://doi.org/10.1007/s12613-017-1399-0

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Research Article

High-temperature frictional wear behavior of MCrAlY-based coatings deposited by atmosphere plasma spraying

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Corresponding author:
Lei Wang E-mail: wanglei@mail.neu.edu.cn
Received: 11 June 2016; Revised: 18 September 2016; Accepted: 24 October 2016

Abstract

Abstract

Al₂O₃-Cr₂O₃/NiCoCrAlYTa coatings were prepared via atmosphere plasma spraying (APS). The microstructure and phase composition of the coatings were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), laser confocal scanning microscopy (LSCM), and transmission electron microscopy (TEM). The dry frictional wear behavior of the coatings at 500℃ in static air was investigated and compared with that of 0Cr25Ni20 steel. The results show that the coatings comprise the slatted layers of oxide phases, unmelted particles, and pores. The hot abrasive resistance of the coatings is enhanced compared to that of 0Cr25Ni20, and their mass loss is approximately one-fifteenth that of 0Cr25Ni20 steel. The main wear failure mechanisms of the coatings are abrasive wear, fatigue wear, and adhesive wear.
- metal matrix composites;
- composite coatings;
- wear behavior;
- high temperature properties;
- plasma spraying

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References

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