AMORPHOUS ZIRCONIUM-NICKEL ALLOY BASED HYDROGEN SEPARATION DISSOCIATION MEMBRANE, ITS PRODUCTION AND ACTIVATING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To exhibit sufficient permeability only to hydrogen without using a noble metal such as Pd by using a membrane composed of an amorphous ZrNi alloy and an amorphous multi component alloy consisting essentially of Zr and Ni. ;SOLUTION: The hydrogen separation dissociation membrane is obtained preferably by blending a metal, heating in an inert gas atmosphere and cooling with a liquid. For example, 8.7 g Zr and 10.0 g Ni are melted with arc under 50 kPa argon atmosphere and the produced alloy sample is pulverized into about several mm, charged in a quartz nozzle and melted by high frequency induction heating under the 50 kPa argon atmosphere. The melted material is jetted to the periphery of a 200 mm diameter copper roll rotating at 2,000 rpm to be quenched and to obtain the hydrogen separation dissociation membrane having 5 mm width and 0.03 mm thickness and composed of the ribbon like amorphous Zr36Ni64. Both surfaces of the film are exposed for 1 hr under hydrogen atmosphere of 573 K and 0.3 MPa to be activated. In the amorphous Zr36Ni64 alloy, Ni is segregated on the surface in the hydrogen atmosphere to become as a catalyst for hydrogen dissociation to exhibit excellent hydrogen permeability.;COPYRIGHT: (C)2000,JPO