Open AccessMicrostructure and Mechanical Properties of Ni-WC Thermal Sprayed Composite Coatings
Author(s) -
M. Bober,
J. Jakubowski,
Andrzej Radziszewski,
Jacek Senkara
Publication year - 2018
Publication title -
advances in materials science/advances in materials sciences
Language(s) - English
Resource type - Journals
eISSN - 2083-4799
pISSN - 1730-2439
DOI - 10.1515/adms-2017-0047
Subject(s) - materials science , microstructure , abrasion (mechanical) , composite number , indentation hardness , tungsten carbide , metallurgy , alloy , composite material , dissolution , carbide , thermal spraying , cermet , coating , chemical engineering , ceramic , engineering
Abstact The paper presents results of investigations of the microstructure and selected properties of improved composite coatings consisting mainly of nickel matrix reinforced by WC particles. The coatings were obtained by flame spraying of powders mixture on non-alloy steel substrates with following material remelting. Structural investigations were performed using both optical and electron microscopy. The distribution of microhardness and abrasion resistance of deposited coatings were also determined. The complex structure of coatings and resulting high wear withstand are the consequence of an intensive action of liquid matrix with dissolving tungsten carbide particles and formation of secondary phases.