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  • Microstructure, oxidation resistance and mechanical properties of stellite 12 composite coating doped with submicron TiC / B4C by laser cladding

    Rights statement: This is the author’s version of a work that was accepted for publication in Surface and Coatings Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Surface and Coatings Technology, 395, 2020 DOI: 10.1016/j.surfcoat.2020.125810

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Microstructure, oxidation resistance and mechanical properties of stellite 12 composite coating doped with submicron TiC/B4C by laser cladding

Research output: Contribution to journalJournal articlepeer-review

Published
  • Q. Cheng
  • H. Shi
  • P. Zhang
  • Z. Yu
  • D. Wu
  • S. He
  • Y. Tian
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Article number125810
<mark>Journal publication date</mark>15/08/2020
<mark>Journal</mark>Surface and Coatings Technology
Volume395
Number of pages11
Publication StatusPublished
Early online date20/04/20
<mark>Original language</mark>English

Abstract

Stellite 12 and Ti/B4C composite coatings were successfully fabricated on the surface of 304 stainless steel substrates by laser cladding. The effect of Ti/B4C with different mass fractions on the structure and properties of Stellite 12 coating were studied. The properties and the growth mode of the coating were analyzed. The results show that the Stellite 12 coating was mainly composed of face-centered cubic γ-Co and Cr7C3. With the addition of Ti/B4C, TiC submicron particle phase was synthesized in situ in the coatings. Residual B4C as a heterogeneous nucleus particle, forming a submicron microstructure TiC/B4C strengthening phase, and the particle size gradually decreases. The TiC/B4C particles can refine the grains of the coatings. The micro-hardness of the coating gradually increased with the increase of Ti/B4C, and the highest were 650 HV. The wear resistance and oxidation resistance of the coatings gradually increased with the increase of Ti/B4C. © 2020

Bibliographic note

This is the author’s version of a work that was accepted for publication in Surface and Coatings Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Surface and Coatings Technology, 395, 2020 DOI: 10.1016/j.surfcoat.2020.125810