We study electrical conductivity behavior of Cu-powder reinforced epoxy
composite material in different solutions (distilled water, tap water &3.5%NaCl)
with a weight fraction (5, 15, 30 &45) was investigated for (7) weeks immersion
time. The results exhibit that electrical conductivity increases as increasing
immersion time due to the specimen was absorbed the solutions. The maximum
values were reached with 3.5% NaCl solution because of Cl ions whereas electrical
conductivity not apparent in distilled water was attributed to pure water containing
no ions is an excellent insulator.