Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1990-12-14
1994-03-15
Theisen, Mary Lynn
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
264 56, 264120, 264320, 264321, 419 49, B29C 4302
Patent
active
052943828
ABSTRACT:
The present invention comprises an improved method of controlling resistivity in a process for consolidating particular materials or combinations of such materials into shaped products of very low porosity. High compaction pressures are applied at temperatures in the range of sintering temperature of the materials being consolidated to achieve essentially complete densification at extremely rapid processing rates. Electrothermal heating of a medium having controlled resistivity is utilized to accomplish these results. Various difficult materials, such as silicon carbide, boron carbide and other very high melting point materials, may be densified by these techniques.
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Superior Graphite Co.
Theisen Mary Lynn
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