Abstract The paper presents the computational studies on microstructure of WC-Co-Cr coatings deposited by High Velocity Oxy Fuel spraying (HVOF). study covers porosity assessment according to ASTM E2109-01 standard, carried out in ImageJ software, terms volume porosity, size and shape pores. evaluation was preceded scanning electron microscope (SEM) observations at magnifications 2000x 5000x. A...

High-entropy alloys (HEAs) hold promise for achieving excellence performance due to unconventional composition and structure. In this paper, the effect of FeCoCrNiAl HEAs as binder instead Co on microstructure WC cemented carbide was investigated. The isothermal oxidation resistance WC-HEAs carbides with 6, 10, 15 % studies at 700, 800, 900 1000 °C. results revealed that microstrcture dense, av...

Abstract WC-Co coatings sprayed by HVOF attracted much attentions, benefiting from the satisfactory wear resistance and high bonding strength to steel substrates. Nevertheless, density of conventional required excessive Co binder, which decreased hardness operation life. Based on this, a strengthened WC-30WB-10Co coating was developed with both improved hardness, using high-qualified thermal co...

This study focuses on the preparation of fine-grained WC/Co composite powder using rolling ball milling and spray drying techniques. The cemented carbide composition achieved through low-pressure sintering technology was WC-10Co-0.5Cr3C2-1TaC-0.5Ru (wt.%). To effect temperature microstructure mechanical properties WC-10 wt.% carbide, phase constituents material were analyzed X-ray diffractometr...

Article history: Received 9 November 2015 Accepted 25 April 2016 Available online 27 April 2016 Nanostructured WC powders can provide technologically attractive properties due to the fine microstructures obtained after sintering. Either W or WO3 powders are used for the industrial production of WC. In both cases, the contact area between carbon and tungsten precursors has a critical influence o...