Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By mechanically introducing gas into material
Patent
1992-01-07
1992-12-01
Theisen, Mary Lynn
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By mechanically introducing gas into material
264 71, 264122, 264125, 419 2, 419 23, B29C 6700, B22F 300
Patent
active
051678853
ABSTRACT:
Monolithic bodies of sinterable materials are formed by a sintering process in which little or no shrinkage of the body occurs during sintering. In the method, large particles are placed in particle-to-particle contact with finer size powder particles at the interstices to form a molded shape which is then fired. During firing, the large particles are substantially stable, but the fine powder particles sinter to bond the large particles together. The method is especially useful for producing large and/or intricately shaped bodies. The method is also especially useful for making monolithic bodies using large hollow spherical particles.
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Brezny Rasto
Rice Roy W.
Capella Steven
Theisen Mary Lynn
W. R. Grace & Co.,-Conn.
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