A high speed electrodeposition process has been developed and employed to deposit hard chromium at high rate of deposition (300 µm/hr) from chromium (III) electrolyte. The deposit's quality, structure, microhardness and corrosion properties has been examined and related to the prevailing, hydrodynamic conditions of deposition. X-ray diffraction show that the as-deposited chromium to be microcrystallin. The microhardness, corrosion properties and the structural changes which takes place during heat treatment are also presented.

Subject
Coatings, Plating, Corrosion currents, Chromium, Structures, Microhardness, Current densities, Deposition rate, Corrosion resistance, Deposit corrosion, Annealing, Heat treatment, Electrolytes
Keywords:
chromium plating, high speed plating, microstructure, microhardness, corrosion property, X-ray diffraction, heat treatment
© 1995 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1995
Association for Materials Protection and Performance (AMPP)
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