American Journal of Applied Sciences

Effect of Cathodically Charged Hydrogen on the Microhardness of Pure Copper

Ghazi S. AL-Marahleh and Amjad S. El-Amoush

DOI : 10.3844/ajassp.2005.526.532

American Journal of Applied Sciences

Volume 2, Issue 2

Pages 526-532


The effect of hydrogen on the microhardness of pure copper was investigated after experiments conducted on specimens that hydrogen charged under different cathodic charging conditions. Microhardness measurements revealed that the introduction of hydrogen caused hardening on the surface of copper. The severity of the hardened region increased with either cathodic current density or charging time. Further charging increased the depth of the hardened region of copper. Ageing after charging can result in either complete or partial recovery of hardness, depending on the charging conditions.


© 2005 Ghazi S. AL-Marahleh and Amjad S. El-Amoush. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.