Resumo

HANIEF, N; LANG, C.I; BUCHER, R.  e  TOPIC, M. Phase transformations and surface characterization of the platinum-chromium coated system. J. S. Afr. Inst. Min. Metall. [online]. 2012, vol.112, n.spe, pp.501-504. ISSN 2411-9717.

This research involves the investigation of phase transformations in the platinum-chromium coated system. Single-layer 0.1 ìçé platinum coatings were deposited via electron beam deposition on 99.98 percent pure chromium substrates. Specimens were subjected to systematic heat treatment in a vacuum furnace at 900°C for up to 20 hours. Phase formation and the changes in surface morphology were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Both CrPt and Cr₃Pt phases are formed during heat treatment for different times at 900°C. Significant changes in the morphology of this coated system were detected after heat treatment at 900°C for 20 hours.

Palavras-chave : Platinum-chromium system; platinum coating; chromium substrate; phase formation; surface morphology..

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