Method of manufacturing carbon substrate

Details Method of manufacturing carbon substrate Method of manufacturing carbon substrate

1994-08-30

1996-12-03

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

C01B 3100

Patent

active

055805000

ABSTRACT:
A carbon substrate manufacturing method includes a hot molding step, a burn-carbonizing step, a hot isostatical pressure treatment step, and a mirror polishing step. In the hot molding step, molding is performed while heating thermosetting resin powders to be a hard carbon substrate after burn-carbonizing, where the thermosetting resin powders are of a particle size 150 .mu.m or more, HPF 80-150 mm, a moisture content 1.0-3.0 weight %, Fe, Ni, Si and Ca respectively 5 ppm or less. In the burn-carbonizing process, a disk shaped resin molded body is filled into a graphite cylinder and burn-carbonized by heating from the external while the condition therefor is maintained in that the disk shaped resin molded body is stacked holding therein a graphite spacer at every one sheet basis or at every plurality of sheet basis and is loaded on its top with a tungsten carbide weight, where the graphite spacer has a heat conductivity 100 kcal/m.hr..degree. C. or less, a bulk density 1.70-1.85, and a flatness degree 10 .mu.m or less.

REFERENCES:
patent: 4221773 (1980-09-01), Tsukagoshi et al.

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