Brazing materials for producing metal-ceramics composite substra

Details Brazing materials for producing metal-ceramics composite substra Brazing materials for producing metal-ceramics composite substra

1997-05-02

1999-09-21

Yee, Deborah

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75247, 75252, 148431, 420502, 22826261, C22C 506, C22C 500

Patent

active

059556862

ABSTRACT:
A brazing material having 0.25-0.9 wt % of titanium oxide added to a basic formula consisting of 60-94.25 wt % Ag, 5-30 wt % Cu and 0.5-4.5 wt % of an active metal is processed to form a paste, which is applied to an AlN substrate and overlaid with a copper plate and heat treated to form a joint between the AlN substrate and the copper plate. A resist is applied to the copper plate to form a circuit pattern, which is etched to form a metallized circuit, thereby producing a metal-ceramics composite substrate capable of operation on high electrical power. The substrate is improved in various characteristics of a power module device over the composite substrates produced by using the conventional brazing materials.

REFERENCES:
patent: 3970590 (1976-07-01), Hoffman et al.
patent: 4410285 (1983-10-01), Strasser et al.
patent: 4735866 (1988-04-01), Moorhead
patent: 5001019 (1991-03-01), Ito et al.
patent: 5340012 (1994-08-01), Beeferman et al.
Chem Abstract 126:228456, 1997.

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