Method for making strong mantles and other ceramic structures

Details Method for making strong mantles and other ceramic structures Method for making strong mantles and other ceramic structures

1999-01-08

2000-10-03

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Simultaneously burning, vaporizing, or melting of embedded...

264 296, 264628, 264632, 264658, 264621, 431100, 501 80, B28B 100

Patent

active

061268887

ABSTRACT:
A method for making very strong gas mantles and other ceramic structures, and the resulting products, are provided. According to the method, an organic or composite structure is first pyrolyzed in the absence of oxygen to remove hydrogen, oxygen and nitrogen, leaving a porous carbon or composite structure, which is then impregnated with a metal compound-containing solution or slurry which is later fired in the presence of an oxidizing atmosphere to produce a refractory metal oxide which has about the same shape as the precursor carbon or composite structure. Due to minimal shrinkage of the mostly carbon or composite precursor, the resulting mantles and other ceramic structures have few defects in the fibers and great strength.

REFERENCES:
patent: 3663182 (1972-05-01), Hemling
patent: 5240407 (1993-08-01), Diederich et al.
patent: 5356487 (1994-10-01), Goldstein et al.
patent: 5662737 (1997-09-01), Chen
patent: 5686368 (1997-11-01), Wong
patent: 5711661 (1998-01-01), Kushch et al.
patent: 5837011 (1998-11-01), Wong

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