Abstract: This invention describes materials system and processing conditions for manufacturing magnetic circuit components such as induction coils and transformers that are non wire-wound, miniature in size and, have a low manufacturing cost.
Type:
Grant
Filed:
November 6, 2002
Date of Patent:
July 5, 2005
Assignee:
Electro-Science Laboratories, Inc.
Inventors:
Richard L. Wahlers, Cornelius Y. D. Huang, Alvin H. Feingold, Merrill R. Heinz, Michael Alan Stein
Abstract: The present invention relates to thick film coating compositions which adhere particularly well to silicon nitride substrates and accordingly may be used in the manufacture of heater apparatus using such substrates. Such thick film coating materials comprise a borosilicate glass matrix containing an amount of a metal oxide sufficient to enable said thick film coating material to react with a silicon nitride substrate to promote adherence thereto; and desirably further contains ceramic powders and/or metal or metal-containing compound powders and/or flakes.