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Rare Metals
Erschienen in: Rare Metals 12/2019

15.11.2019

Microstructure and wear resistance of CoCrNbNiW high-entropy alloy coating prepared by laser melting deposition

verfasst von: Yan-Jun Jia, Han-Ning Chen, Xiao-Dan Liang

Erschienen in: Rare Metals | Ausgabe 12/2019

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Abstract

The defect-free CoCrNbNiW high-entropy alloy coating was successfully prepared by laser melting deposition, and its microstructure and wear resistance were investigated. The results showed that the microstructure of CoCrNbNiW high-entropy alloy coating consisted of fcc phase rich in Nb and fcc phase including un-melted W particles and rich in Cr. Moreover, an amount of fcc phase was formed at the middle and top of coating, while the bcc phase rich in Cr was formed at the bottom. Meanwhile, the un-melted W particles were diffusely distributed in the coating. Therefore, the microhardness of CoCrNbNiW high-entropy alloy coating was improved and was 2.78 times as high as that of substrate. The wear loss and wear rate of coating were 0.26 and 0.23 times higher than those of substrate, respectively. The wear resistance of substrate was obviously improved due to the preparation of CoCrNbNiW high-entropy alloy coating.

Graphic Abstract

Vorheriger Artikel Hydrogen storage thermodynamics and dynamics of La–Mg–Ni-based LaMg12-type alloys synthesized by mechanical milling
Nächster Artikel Numerical simulation of preparation of ultrafine cerium oxides using jet-flow pyrolysis

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Metadaten
Titel
Microstructure and wear resistance of CoCrNbNiW high-entropy alloy coating prepared by laser melting deposition
verfasst von
Yan-Jun Jia
Han-Ning Chen
Xiao-Dan Liang
Publikationsdatum
15.11.2019
Verlag
Nonferrous Metals Society of China
Erschienen in
Rare Metals / Ausgabe 12/2019
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-019-01342-y

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