LASER-MELTING TREATMENT OF THICK CHROMIUM ELECTRODEPOSITS ON BRASS SUBSTRATE

This item is provided by the institution :
National Technical University of Athens

Repository :
Digital Library of National Technical University of Athens | Dspace@NTUA

see the original item page
in the repository's web site and access all digital files if the item^*

Title

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

Creator

PSYLLAKI, P (EN)

CHRYSSOULAKIS, Y (EN)

POLYMENIS, S (EN)

PANTELIS, D (EN)

Type

journalArticle (EN)

Partial document
Publication in journal (EN)

Article
Scientific article (EN)

Issued

2014-03-01T01:42:06Z

1993 (EN)

Year

1993 (EN)

Description

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)

Scientific field

Materials Science, Coatings & Films (EN)

Metallurgy & Metallurgical Engineering (EN)

Engineering and Technology ▶ Materials Engineering
Surfaces, Coatings and Films (EN)

Engineering and Technology ▶ Materials Engineering
Metallurgy and Metallurgical Engineering (EN)

Journal

PLATING AND SURFACE FINISHING (EN)

Language

English

Publisher

AMER ELECTROPLATERS SOC INC (EN)

Provider