Microstructure and Wear Resistance of High-Chromium Cast Iron with Multicomponent Carbide Coating via Laser Cladding

High-chromium cast iron (HCCI) coatings with multicomponent carbides were prepared on low-alloy steel substrates using a laser cladding technique in this work. The microstructure and wear resistance of the coatings were characterized via optical microscopy, scanning electron microscopy, transmission...

Full description

Saved in:
Bibliographic Details
Published inCoatings (Basel) Vol. 13; no. 8; p. 1474
Main Authors Chen, Chao, Wang, Junfa, Ge, Yiyuan, Zhuang, Minghui, Ma, Zheng
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.08.2023
Subjects
Carbides
Cast iron
Chromium
Doping
Electron microscopy
Hardness
Heat treating
Heat treatment
Laser beam cladding
Lasers
Low alloy steels
Mechanical properties
Microstructure
Molybdenum
Niobium
Optical microscopy
Protective coatings
Spectrum analysis
Substrates
Titanium
Tungsten
Wear resistance
China
Japan
Online AccessGet full text

Cover

More Information
Summary:High-chromium cast iron (HCCI) coatings with multicomponent carbides were prepared on low-alloy steel substrates using a laser cladding technique in this work. The microstructure and wear resistance of the coatings were characterized via optical microscopy, scanning electron microscopy, transmission electron microscopy, energy-dispersive spectroscopy, X-ray diffraction and block-on-ring wear testing. Multicomponent carbides (Ti, Nb, Mo, W, V)C with an FCC structure and multicomponent compounds (Nb, Mo, W, V) (B,C) with an FCC structure were found in the microstructures of coatings after multielement doping. In addition, (Cr, Mo, W, V)23C6 compounds could be obtained by heat treatment. These multicomponent compounds were beneficial for obtaining coatings with an excellent hardness (60 HRC) and high wear resistance. This multielement doping method provides an effective modified method for preparing high-wear-resistance laser cladding coatings.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings13081474