| abstract |
PROBLEM TO BE SOLVED: To maintain strength without causing mechanical defects and pinholes that affect performance even when a thin film is formed on a composite film in which a metal layer is arranged on a porous base material. In order to prevent damage and peeling due to contact, and to specialize such a composite membrane as a hydrogen separation membrane, it is preferable to eliminate the disadvantage of hydrogen embrittlement. SOLUTION: The composite membrane includes (A) a porous base material, (B) a metal dense filler comprising a porous material and a metal filled in the pore space and closing the pore space, and (C) a porous material. It is assumed that the protective material is layered in order, and the porous base material, the porous material, and the porous protective material are breathable. The porous material and the porous protective material preferably have an average pore diameter smaller than that of the porous substrate, or are derived from fine particles or porous ceramics, and in particular, a fired product of an adherend containing ceramic fine particles. [Selection figure] None |