Hot pressing dense ceramic sheets for electronic substrates and

Details Hot pressing dense ceramic sheets for electronic substrates and Hot pressing dense ceramic sheets for electronic substrates and

1988-01-27

1990-05-01

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Electrical device making

29846, 29848, 29849, H05K 103, H05K 111, H05K 346

Patent

active

049206400

ABSTRACT:
Dense ceramic sheets suitable for electronic substrates are prepared by hot pressing ceramic green sheets containing ceramic powder and organic binders which leave no undesirable residue upon pyrolysis in the absence of oxygen. Boron nitride sheets made of boron nitride powder in a similar binder are placed on each side of the ceramic green sheet to form a composite. After hot pressing the composite so as to remove the binder and densify the ceramic, the BN layers are removed.

REFERENCES:
patent: 3189978 (1965-06-01), Stetson
patent: 3755204 (1973-08-01), Sergeys
patent: 4518736 (1985-05-01), Jahn

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