ANALYSIS OF ELECTRICAL DISCHARGE MACHINING (EDM) CUT OF CERAMIC LAYERS OBTAIN THROUGH ATMOSPHERIC PLASMA SPRAYING (APS) ON STEEL SUBSTRATE

Marian LUȚCANU, Bogdan ISTRATE, Margareta COTEAȚĂ, Ioan ȘTIRBU, Irina Teodora BIRNOVEANU, Mihai POPA, Vasile MANOLE, Nicanor CIMPOEȘU

Abstract


Atmospheric plasma spraying (APS) of ceramic powders was used to obtain complex Al2O3-ZrO2 layers on steel substrates for industrial applications. The ceramic layers were obtained after five-time passing’s using a robotic arm with ceramic plasma on the metallic surface. The ceramic layers were investigated before and after mechanical grinding (2000 grit). Ceramic layers’ surface and thickness were analyzed using scanning electron microscopy (SEM) and optical microscopy (MO) on the cutting line area. The appearance of micro-pores or micro-cracks was analyzed on the surface for grinded state samples. The thickness and the continuity of the ceramic layers were analyzed along the cutting line.

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