Process for producing smoother ceramic surfaces

Details Process for producing smoother ceramic surfaces Process for producing smoother ceramic surfaces

1980-11-03

1983-01-18

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 67, C04B 3564

Patent

active

043691544

ABSTRACT:
In a process for producing a ceramic substrate for use in an electrical packaging structure, according to which (1) a substantially homogeneous ceramic mass, comprising alumina or glass ceramic, an organic bonding agent, a plasticizing agent, an emulsifying agent, a glass frit, and a solvent, is formed into a cohesive flat strip, (2) said strip is green dried and cut into desired size substrates, and (3) said substrates are sintered, the improvement comprising the step of lapping the substrates prior to the sintering step, whereby, after sintering, a smoother surface is obtained on said substrates than is obtained with substrates that have not been so lapped.

REFERENCES:
patent: 3402024 (1968-09-01), Marshall et al.
patent: 3538600 (1970-11-01), Farrell et al.
patent: 3794707 (1974-02-01), O'Neill et al.
patent: 4159295 (1979-06-01), Mazzuchelli et al.
patent: 4193082 (1980-03-01), Dougherty
patent: 4202007 (1980-05-01), Dougherty et al.

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