Method for the forming of ceramic green parts
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United States of America Patent
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Aug 4, 1998
Issued Date -
N/A
app pub date -
Mar 26, 1996
filing date -
May 9, 1994
priority date (Note) -
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Abstract
The well known slip casting process for the production of ceramic green parts, in which hardening is achieved by water removal with porous molds, is characterized by disadvantages in terms of strength, shrinkage during drying and problems with cracking during drying. The present invention avoids these disadvantages and produces ceramic green parts by changing the surface potential of powder particles in the slip instead of by removing water. Further more the coagulation strength is increased by adding polymers or extremely fine divided colloidal particles.
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