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Use of Precrystallized Glass Powder for Production of Multilayer Circuit Boards in Glass Ceramic

IP.com Disclosure Number: IPCOM000070130D
Original Publication Date: 1978-Aug-01
Included in the Prior Art Database: 2005-Feb-21

Publishing Venue

IBM

Related People

Authors:
Master, RN McMillan, PW Tummala, RR [+details]

Abstract

In forming glass-ceramics, the use of precrystallized glass powder made by prior heat treatment has several advantages over the use of uncrystallized glass which crystallizes during the sintering process itself. A method for producing precrystallized glass and its use in the production of sintered multilayer circuit board components is described. The advantages associated with the use of precrystallized glass are more efficient removal of organic binders, reduction of distortion of the glass-ceramic during the sintering process, and improved compatibility of the shrinkage characteristics of the metal paste and glass-ceramic. In addition, undesirable reactions between metal pastes and the glass-ceramic are reduced in extent by the use of precrystallized glass. Introduction