4.6 Article

Influence of Mo on Ni-15Cr Cladding Layers via Plasma Transferred Arc

Journal

MATERIALS
Volume 15, Issue 23, Pages -

Publisher

MDPI
DOI: 10.3390/ma15238381

Keywords

cladding layer; plasma transferred arc; microstructure; micro hardness; corrosion resistance

Funding

  1. Hubei Provincial Natural Science Foundation of China
  2. [2014CFB707]

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The plasma transferred arc (PTA) deposition of composite Ni-Cr-Mo covering layers provides excellent corrosion and wear resistance, which can improve the service life of ships and address the corrosion and wear issues of mechanized boats. The analysis of the effects of Mo content on the microstructure, hardness, and corrosion resistance of the covering layers reveal that the structure changes and austenite precipitates become granular with increasing Mo content. Furthermore, the corrosion and wear resistance of the covering layers are improved, with the sample containing 5% Mo exhibiting the best performance.
The composite Ni-Cr-Mo covering layers with excellent corrosion and wear resistance are deposited by plasma transferred arc (PTA), which can improve the service life of ships and solve the corrosion and wear problems of mechanized boats. The effects of Mo on the microstructure, hardness and corrosion resistance of covering layers were analyzed by OM, SEM, XRD, EDS, a micro hardness test, a friction test and a corrosion-resistance test. The results show that the structure of covering layers change and the austenite precipitates become granular with an increase of Mo content. In addition, the corrosion and wear resistance of covering layers are improved and the sample with 5% content of Mo has the best wear and corrosion resistance.

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