Patent ID: 6372362
Filing Date: 2002-04-16
Classification: B22F,C23C,Y10T

Abstract:
A composite vapor deposition material for forming a composite deposited film with varied compositions formed in an initial and a final stage of evaporation, comprising a high vapor pressure metal envelope having a cavity therein, and a mixture of a high vapor pressure metal powder and a low vapor pressure metal powder packed in the cavity and formed in a composite structure,the low vapor pressure metal powder being dispersed and held by the high vapor pressure metal powder in a core region of the high vapor pressure metal body and distributed uniformly in the longitudinal direction of the body, wherein particles with sizes under 30 micrometers of the low vapor pressure metal powder are not less than 70% of the entire amount of the particles, whereby the composite deposited film is formed to be rich in the high vapor pressure metal in an initial evaporation stage, rich in the low vapor pressure metal in a final evaporation stage and of varied compositions in an intermediate stage between the initial evaporation stage and the final evaporation stage.