Characterization of WC-10Ni HVOF Coating for Carbon Steel Blade

Colloquium of Advanced Mechanics 2016

Ahmad, N.A.^1 ; Kamdi, Z.^1 ; Mohamad, Z.^1 ; Omar, A.S.^1 ; Latif, N. Abdul^1 ; Tobi, A. L. Mohd^1

Faculty of Mechanical and Manufacturing Engineering, University Tun Hussein Onn Malaysia (UTHM), Johor, Batu Pahat, Malaysia^1

关键词: Chemical compositions;    Crystalline phasis;    Dispersive spectrometers;    High velocity oxy fuel;    Material layers;    Moderate temperature;    Scanning electrons;    Vickers microhardness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/165/1/012022/pdf
DOI  :  10.1088/1757-899X/165/1/012022

来源: IOP

【 摘 要 】

High Velocity Oxy-Fuel, HVOF is a depositing methods of a material layer over a base metal or substrate with characteristics of high flame velocity and moderate temperature. Where, tungsten carbide, WC cermet HVOF coatings is widely used to protect machine components from wear and corrosion. The main purpose of this present paper is to characterize the WC-10Ni coating deposited by HVOF thermal spray onto a carbon steel blade. The morphology and chemical composition of the coating were characterized by Scanning Electron Microstructure (SEM), electron dispersive spectrometer (EDS), and X-ray diffraction (XRD). The hardness test was carried out by using Vickers micro-hardness tester with loads of 490.3 mN (HV0.05). From XRD results, no sharp nickel peak was identified and has been replaced by a hump which indicate the amorphous Ni. The major crystalline phases were compounds WC, W2C and metallic phase of W. The WC-10Ni coating shows high hardness with low porosity distribution.