Si3N4 recubierto con diamante CVD mediante filamento caliente y plasma generado por microondas
2004
Silicon nitride substrates have been diamond coated by hot-filament (home made) and microwave plasma (commercial) CVD reactors. The importance of Si 3 N 4 as substrate relies on its favoured adhesion to the diamond film, as required in wear applications. Diamond coatings have been characterized by μ-Raman spectroscopy, X-ray diffraction, scanning electron microscopy and atomic force microscopy. The diamond film/substrate adhesion has been evaluated by performing Brale indentations at different loads. The diamond films grown by hot filament matched those grown by microwave plasma in terms of morphology and diamond quality, only loosing in uniformity. Spherical substrates have also been used to compare the films coated by both techniques.
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