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- Title
Influence of deposition technology on the morphology of chromium carbide-based powder coatings.
- Authors
Munteanu, Corneliu; Chicet, Daniela-Lucia; Istrate, Bogdan; Stefan, Adrian; Vida-Simiti, Ioan
- Abstract
Chromium carbide powders are widely used for thermal spray coatings because these hard particles provide improvements of mechanical properties, mainly wear resistance, on the surfaces on which they are deposited. The integration of chromium carbides in a Ni-based matrix provides increased erosion, abrasion, hot wear and corrosion resistance. In this paper, a comparative study is presented between two types of chromium carbide-based coatings made by two different spray deposition methods, namely atmospheric plasma spray (APS) and cold spray (CS). By electron microscopy (SEM) and X-ray diffraction (XRD) analysis, the effect of the deposition technology on the morphology of the coatings and especially on the way chromium carbides are embedded in the deposited layers was analyzed. It was observed that plasma spraying is accompanied by phase transformations of the chromium carbides (e.g. Cr7C3 type carbides appear), which can increase the hardness of the coating thus obtained, but also by the appearance of oxides of the component elements (NiO, Cr2O3, NiCr2O3). By comparison, cold spray coating provides a compact coating with minimal oxidation, which is the main advantage of this deposition technology.
- Subjects
DEPOSITIONS; CHROMIUM carbide; CORROSION &; anti-corrosives; SEDIMENTATION &; deposition; SCANNING electron microscopes
- Publication
Journal of Engineering Sciences & Innovation (JESI), 2024, Vol 9, Issue 1, p33
- ISSN
2537-320X
- Publication type
Article