Microstructure and Wear Behavior of Microwave Treated WC-10Co-4Cr Composite Coating on AISI 4140 Alloy Steel

WC-10Co-4Cr composite coatings have been coated with AISI 4140 low alloy steel substrate using high-speed oxygen fuel (HVOF) technology with a particle size from 0 to 50 microns. Microwave heating energy is used to enhance the mechanical and tribological properties of sprayed coatings as post-heat t...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-10, Vol.1189 (1), p.12012
Main Authors: Pradeep, D G, Nithin, H S, Sharath, B N, Madhu, K S, Venkatesh, C V
Format: Article
Language:English
Subjects:
Chromium molybdenum steels
Coatings
Heat treatment
High speed
High strength steels
HVOF
Low alloy steels
Mechanical properties
Microhardness
Microwave Treated
Sprayed coatings
Substrates
Surface roughness
Tribology
Tungsten carbide
WC-10Co-4Cr
Wear
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Summary:WC-10Co-4Cr composite coatings have been coated with AISI 4140 low alloy steel substrate using high-speed oxygen fuel (HVOF) technology with a particle size from 0 to 50 microns. Microwave heating energy is used to enhance the mechanical and tribological properties of sprayed coatings as post-heat treatment technique. Microwave fused coatings exhibit greater surface roughness, porosity, micro hardness, and wear strength than the as sprayed deposition. The as coated and fused coatings have been characterized by x-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) procedure. Wear behaviors under normal loads of 5N, 10N and 15N have been investigated by a pin on a disc device at temperatures of 30 °C, 100 °C and 200 °C. The results revealed that microwave-treated coatings are highly recommended to protect the sliding surface, such as a high-speed spindle, under different environmental conditions.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1189/1/012012