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Shrinkages during from Liquid to Solid in Colloidal Forming

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Abstract:

The colloidal forming is an important process to prepare complex-shaped parts of ceramics, especially for industrialization of structure ceramics. It has been paid widely attention to by ceramic scientists, industries and governments in the past three decades. In 90’s, because the homogeneous green bodies were prepared using colloidal ways, many new colloidal forming processes were developed continuously such as gelcasting, DCC, TIF, colloidal vibration casting, colloidal injection moulding, HAS, and so on.. However, crackings of sintered bodies from colloidal ways have also often been occurred, especially for large size and solid parts of ceramics. In this paper, some important views about shrinkages from colloidal forming were discussed. The internal stresses in green bodies to prepare using colloidal forming resulted from the shrinkage of suspension during from liquid to solid. The shrinkage led to different cracks during sintering and/or debindering. Finally, it is put forward that the shrinkage from liquid to solid in colloidal froming have to be regarded in the future.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

2378-2381

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.2378

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Online since:

April 2007

Authors:

Jin Long Yang, Xiao Qing Xi, Yong Huang

Keywords:

Colloidal Forming, Internal Stress, Shrinkage

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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