Thermisches Spritzen neuartiger SiC und TiC Pulver mit oxidischer Binderphase
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK(2007)
Abstract
Intermediate results of an actual project are presented. The investigations concern newly developed SiC and TiC powders, their processing by means of thermal spraying and the characterization of produced coatings. Development and optimization of powders, thermal spray process and spray parameter optimization are carried out on permanent feedback. The powder production line is spray-drying, sintering and conditioning. The binder matrix phase is aluminum oxide / yttrium oxide. The produced powders SiC - Al2O3/ Y2O3 and TiC - Al2O3/Y2O3 show different specific chemical compositions and morphologies each. Carbide contents of > 65% are aimed at. Applied thermal spray processes are atmospherical plasma spraying and high velocity oxygen fuel spraying. The results demonstrated characterize feedstock powders as well as produced coatings. The investigations are done by means of light and scanning electron microscopy.
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Key words
thermal spraying,silicon carbide (SiC),titanium carbide (TiC),ceramic coatings,hard material coatings
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