Patent ID: 8460461

Claim:
A method for manufacturing a clad textured metal substrate for forming an epitaxial thin film thereon comprising the following steps: a) an orienting heat treatment step of hot-working a silver sheet containing 30 to 200 ppm oxygen by concentration at 50 to 300° C. at a working rate of 95% or more, and heat-treating the silver sheet obtained through the hot-working in a non-reductive atmosphere to make at least the surface part a (100)<001> cube texture having a deviating angle Δφ of crystal axes satisfying Δφ≦9 degrees; (b) a step of preparing a metal sheet; and (c) a surface activated bonding step of dry-etching the surfaces to be bonded of the silver sheet obtained by an orienting heat treatment step and the metal sheet in a non-oxidation atmosphere to remove the oxide and adsorbate existing on the surfaces to be bonded, and then bonding the silver sheet with the metal sheet without or through the application of pressure.