Tribological Properties of WC-Co/NiCrBSi and Mo/NiCrBSi Plasma Spray Coatings under Boundary Lubrication Conditions

Content Provider	Directory of Open Access Journals (DOAJ)
Author	A. Vencl M. Mrdak P. Hvizdos
Abstract	The tungsten carbide based WC-Co/NiCrBSi (50/50) and molybdenum based Mo/NiCrBSi (75/25) coatings were investigated under boundary lubricated sliding conditions, and their tribological properties were analysed and compared. These two coatings are in service for a long time, but there are very few papers dealing with their tribological properties, especially in lubricated sliding conditions. The NiCrBSi self-fluxing alloy is one of the popularly used materials for thermal sprayed coating, with relatively high hardness, reasonable wear resistance and high temperature corrosion. Tungsten carbide (WC) is one of the most widely used commercial hard coating materials, and is added to the NiCrBSi coating to improve its hardness and wear resistance. Molybdenum (Mo) is added to the NiCrBSi coating to reduce its coefficient of friction, i.e. to improve its dry sliding wear resistance. The results showed that WC-Co/NiCrBSi coating was more wear resistant, but caused higher wear of the counter-body material. Coefficients of friction were similar for both coatings.
Related Links	http://www.tribology.fink.rs/journals/2017/2017-2/4.pdf
ISSN	03548996
e-ISSN	22177965
Journal	Tribology in Industry
Issue Number	2
Volume Number	39
Language	English
Publisher	University of Kragujevac
Publisher Place	Serbia
Access Restriction	Open
Subject Keyword	Mechanical Engineering and Machinery Coatings Tungsten Carbide Molybdenum Atmospheric Plasma Spraying Boundary Lubrication Friction Wear
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces