Metal-foil-clad composite ceramic board and process for the production thereof
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsKazuyuki Ohya, Norio Sayama
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Abstract
A metal-foil-clad composite ceramic board produced by impregnating by impregnating a sintered substrate (II) of an inorganic continuously porous sintered body (I) having a true porosity of 12 to 50% and an open porosity of at least 10%, with a thermosetting resin (R) under vacuum, to form a resin-impregnated sintered substrate (IIR), stacking a metal foil on the resin-impregnated sintered substrate (IIR) and press-forming the resultant laminate, wherein the stacked metal foil has a 10-point average surface roughness Rz of 10 .mu.m or less, and the resin-impregnated sintered substrate (IIR) and the metal foil have substantially no adhesive layer therebetween or have an adhesive layer having a thickness of 10 .mu.m or less therebetween.
Claims10
A metal-foil-clad composite ceramic board formed of
- a resin-impregnated sintered substrate (IIR) obtained by impregnating a 0.2 to 10 mm thick sintered substrate (II) portion of an inorganic continuously porous sintered body (I) having a true porosity of 12 to 50% and an open porosity of at least 10%, with a thermosetting resin (R) under vacuum, and
- a metal foil,
- the resin-impregnated sintered substrate (IIR) and the metal foil being stacked and press-formed,
- the stacked metal foil having a 10-point average surface roughness Rz of 10 .mu.m or less,
- the resin-impregnated sintered substrate (IIR) and the metal foil having substantially no adhesive layer therebetween or having an adhesive layer having a thickness of 10 .mu.m or less therebetween.
Dependencies are inferred from the claim text.