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Effects of additives on alumina sheets forming by a novel gel-tape-casting

✍ Scribed by Zhi-Peng Xie; Chun-Lei Ma; Yong Huang

Publisher
Elsevier Science
Year
2003
Weight
885 KB
Volume
24
Category
Article
ISSN
0261-3069

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✦ Synopsis

The influences of various additives in the slurry on the process of gel-tape-casting were studied. Alumina powder dispersion can be improved by dispersants, and a solids loading of more than 55 vol.% can be reached by using effective dispersant. With the help of plasticizer, the green tape can be bent without cracks. A proper surfactant is employed to reduce the contact angle of slurry on the carrier film and improve wetting. Foams in slurry resulting from the surfactant can be effectively eliminated using defoamer. A green tape with high strength, flexibility and smooth surface has been obtained.

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