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U.S. Department of Energy
Office of Scientific and Technical Information

Metallization of ceramics

Patent ·
OSTI ID:5281103
This patent describes a method of making a printed circuit on a surface of a ceramic substrate comprising: treating the ceramic substrate with a molten alkali metal compound to adhesion promote or etch the surface; exposing the surface to acidic halide solution containing one or more halides selected from the group consisting of chlorides, bromides, and iodides having an acidity and a halide concentration sufficient to eliminate bare spots in an adherent metal layer formed on the surface or selected parts thereof, wherein the acidic halide solution contains at least 1.5 moles of halide per liter; treating the ceramic surface with a catalyst for electroless metal deposition; depositing metal onto the catalyzed surface; and removing portions of the deposited metal to produce a metal printed circuit conductor pattern adhering to the surface of the ceramic substrate.
Assignee:
Kollmorgen Technologies Corp., Dallas, TX
Patent Number(s):
US 4604299
OSTI ID:
5281103
Country of Publication:
United States
Language:
English