Document Type

Journal Article

Publication Title

Metals

Volume

10

Issue

12

First Page

1

Last Page

15

Publisher

MDPI

School

School of Engineering

RAS ID

32571

Funders

Jiangsu Province Six Talent Peaks Project Natural Science Foundation of Jiangsu Province Open Foundation of Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials

Comments

Sha, J., Chen, L. Y., Liu, Y. T., Yao, Z. J., Lu, S., Wang, Z. X., ... Zhang, L. C. (2020). Phase transformation-induced improvement in hardness and high-temperature wear resistance of plasma-sprayed and remelted NiCrBSi/WC coatings. Metals, 10(12), article 1688. https://doi.org/10.3390/met10121688

Abstract

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. The remelting method is introduced to improve the properties of the as-sprayed NiCrBSi coatings. In this work, tungsten carbide (WC) was selected as reinforcement and the as-sprayed and remelted NiCrBSi/WC composite coatings were investigated by X-ray diffraction, scanning electron microscopy, hardness test and tribology test. After spraying, WC particles are evenly distributed in the coating. The remelting process induced the decarburizing reaction of WC, resulting in the formation of dispersed W2 C. The dispersed W2 C particles play an important role in the dispersion strengthening. Meanwhile, the pores and lamellar structures are eliminated in the remelted NiCrBSi/WC composite coating. Due to these two advantages, the hardness and the high-temperature wear resistance of the remelted NiCrBSi/WC composite coating are significantly improved compared with those with an as-sprayed NiCrBSi coating; the as-sprayed NiCrBSi coating, as-sprayed NiCrBSi/WC composite coating and remelted NiCrBSi/WC composite coating have average hardness of 673.82 HV, 785.14 HV, 1061.23 HV, and their friction coefficients are 0.3418, 0.3261, 0.2431, respectively. The wear volume of the remelted NiCrBSi/WC composite coating is only one-third of that of the as-sprayed NiCrBSi coating.

DOI

10.3390/met10121688

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Research Themes

Natural and Built Environments

Priority Areas

Engineering, technology and nanotechnology

Included in

Engineering Commons

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