gas permeability test piece and the gas permeability evaluation method

摘要

PROBLEM TO BE SOLVED: To evaluate a gas permeability of a specimen, by selecting an appropriate corrosion state through observations in a short time.;SOLUTION: A specimen for testing gas permeability comprises: a corrosive metal layer 2, formed on one surface of a film 1, which is to be corroded by reacting with a gas; and a non-corrosive material layer 3 which seals peripheries of the corrosive metal layer 2 including the corrosive metal layer 2 itself. The corrosive metal layer is provided with a plurality of regions having different thickness.;COPYRIGHT: (C)2013,JPO&INPIT