A combined study of the crystalline structure, the chemical interaction, and diffusion processes of the substrate/layer interface of amorphous-carbon hard coatings is presented. The structure of the coatings and their gradient layer interface to a chromium buffer layer has been investigated on two substrates @Si~100! and tool steel# using x-ray diffraction ~XRD!. Chemical interaction and diffus...

In the current practice of applying carbide-based coatings by thermal spraying, starting material usually contains a metal binder. However, it is important to study possibility spraying binder-free carbides, since components reduce operating temperature and corrosion resistance cermet coatings. this work, powder chromium carbide, Cr3C2, was sprayed using CCDS2000 detonation gun. Acetylene–oxyge...

Nickel chromium (NiCr) powders with different titanium diboride (TiB2) additions (20, 40 and 60 wt %) were prepared with a mechanical alloying method and then sprayed using an air plasma spraying technology. The microstructure and phase composite of the powders and the cross-sections of deposited coatings were analyzed with a scanning electronic microscope and X-ray diffraction. The tribologica...

Deployment of a suspension feedstock has been known to alleviate problems associated with using sub-micron and nanosized powder for thermal spraying monolithic as well powder-suspension ‘hybrid’ composite coatings. However, hybrid never previously used in high-velocity air-fuel (HVAF) spraying. In this work, the very first time, chromium carbide (Cr3C2) co-sprayed along an Inconel-625 (IN-625) ...

To prepare Cr-C alloy layers having high current efficiency, Vickers hardness, and brightness in electrodeposition on commercial cold-rolled steel plate, this study examined additives put into baths. From a Cr2 （SO4）3/（NH4）2SO4 aqueous bath containing oxalic acid CrCl3/highly concentrated CaCl2/H3BO3 glycine, were formed. With the optimized compositions, produced with brightness. The highest ef...