Al-Balqa Applied University, College of Engineering, Materials and Metallurgical Eng, Al-Salt, 19117, P.O. Box 7181, Jordan
Online published on 13 February, 2013.
Tin brass heat exchanger tube was hydrogen charged under different cathodic charging conditions. The introduction of charged hydrogen into tin brass tube was found to induce hardening on its surface. The severity and the depth of the hardened region was observed to increase with either cathodic current density or charging time. Ageing after charging results in either complete or partial recovery of hardness, depending on the charging conditions applied to heat exchanger tube.
Tin brass heat exchanger, Microhardness, Hydrogen
