EFFECTS OF WOOD SPECIES ON ELECTROCONDUCT IVITY AND ELECTROMAGNETIC SHIELDING PROPERTIES OF ELECTROLESSLY PLATED SLICED VENEER WITH NICKEL

The effects of wood species on electroconductivity and elecrtromagneti c shielding properties on some kinds of nickel plated sliced veneers w ere investigated. The electroconductivities of the slieced veneers who se surfaces were covered with thin nickel layers were improved by incr easing the amounts of deposited metal. The electroconductivity paralle l to the fiber direction was greater than that across the fiber direct ion, and the electroconductivities of the plated sliced veneers showed anisotropy. Especially, the electroconductivity across the fiber dire ction changed among the wood species. Their electromagnetic shielding effectivenesses were improved with the increases of thier elecrtorocon ductivities caused by increasing the deposited metal. Great correlativ ity was recognized between the surface resistivities and the electroma gnetic shielding effectivenesses of the metallized sliced venners. Alt hough the amounts of deposited metal on the slieced veneer were almost the same, the anisotropy of electroconductivity and the electromagnet ic shielding properties were different among the wood species. The for med electric path assumed to be changed by the difference in morpholog ies of deposited metal was cased by the difference of wood species.