LASER-MELTING TREATMENT OF THICK CHROMIUM ELECTRODEPOSITS ON BRASS SUBSTRATE

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LASER-MELTING TREATMENT OF THICK CHROMIUM ELECTRODEPOSITS ON BRASS SUBSTRATE (EN)

PSYLLAKI, P (EN)
CHRYSSOULAKIS, Y (EN)
POLYMENIS, S (EN)
PANTELIS, D (EN)

journalArticle (EN)

2014-03-01T01:42:06Z
1993 (EN)


The effects of high-power laser treatment on thickly chromium-coated brass were studied. Microstructure observations, energy dispersive spectrometry (EDS), X-ray diffraction (XRD) analysis and microhardness measurements were carried out. During laser-melting treatment, part of the electrodeposited chromium always evaporated, so that the laser beam incised grooves on the metallic surface, under which two distinct zones were obtained-the laser melted zone (LMZ) and the heat affected zone (HAZ). The upper area of the LMZ consisted mainly of chromium and displayed about the same microhardness as the laser-softened electrodeposited chromium, while in the lower one CuZn, CuZn5, Al8Cr5 phases and unalloyed chromium were identified. This area showed the highest microhardness-about 1.5 times that of the substrate. The HAZ displayed the same composition and microhardness as the substrate. (EN)

Materials Science, Coatings & Films (EN)
Metallurgy & Metallurgical Engineering (EN)

PLATING AND SURFACE FINISHING (EN)

Αγγλική γλώσσα

AMER ELECTROPLATERS SOC INC (EN)




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