| 摘要 |
PROBLEM TO BE SOLVED: To provide a conductive precoat aluminum alloy plate having excellent conductivity. SOLUTION: The conductive precoat aluminum alloy plate comprises: a substrate 2 made of an aluminum alloy plate; a chemical conversion coating 3 formed on one surface or both surfaces of the base plate 2; and a conductive layer 4 formed on the chemical conversion coating 3. The conductive layer 4 includes a base substance comprising water glass or polyvinyl alcohol resin. A film thickness T of the conductive layer 4 is 0.05 to 1.0μm. A surface roughness Ra of the substrate 2 is 0.1 to 0.8μm. A ratio T/Ra of the film thickness T of the conductive layer 4 to the surface roughness Ra of the substrate 2 is 0.07 to 4.0. Further, the conductive layer 4 preferably contains colloidal silica having a primary particle size of 5 to 80 nm. Furthermore, the conductive layer 4 preferably contains a surfactant of 0.1 to 10 pts.wt. when dry weight of the whole conductive layer 4 is 100 pts.wt. COPYRIGHT: (C)2009,JPO&INPIT |
