Origin, Transformation and Control of the Inner Stress in the Green Bodies Prepared by Ceramic Colloidal Forming Processing

Li Ming Zhang; Li Guo Ma; Tian Ma; Jin Long Yang; Yong Huang

doi:10.4028/www.scientific.net/MSF.475-479.1313

Paper Titles

High-Temperature Strength of Directionally Solidified Al₂O₃/YAG/ZrO₂ Eutectic Composite
p.1295

Processing and Microstructure of an All-Oxide Ceramic Composite
p.1301

Fast Uniform Mixing & Controllable Colloidal Forming of Ceramics
p.1305

Gelcasting of Alumina Ceramic in Presence of Water-Soluble Polymer
p.1309

Origin, Transformation and Control of the Inner Stress in the Green Bodies Prepared by Ceramic Colloidal Forming Processing
p.1313

Study on Elimination of Surface-Exfoliation and Crack of ZrO₂ Green Body of Gelcasting with Water-Solubility Macromolecule
p.1317

Pretreatment Processing of Gelcast Green Body before Debinding
p.1321

Controllable Forming Technology in Gelcasting
p.1325

Biaxial Fracture Behavior of Polycrystalline Alumina
p.1329

HomeMaterials Science ForumMaterials Science Forum Vols. 475-479Origin, Transformation and Control of the Inner...

Origin, Transformation and Control of the Inner Stress in the Green Bodies Prepared by Ceramic Colloidal Forming Processing

Abstract:

The origin of the inner stress in the ceramics green bodies prepared by colloidal forming was studied. The results show that the inner stress originates from the nonuniform shrinkage during the solidification of the precursor suspension and the drying of the green bodies, and the gradients of temperature, initiator concentration and moisture are the important original factors causing the inner stress. The inner stress could result in cracks in the green bodies during debinding.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Pages:

1313-1316

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.1313

Citation:

Cite this paper

Online since:

January 2005

Authors:

Li Ming Zhang, Li Guo Ma, Tian Ma, Jin Long Yang, Yong Huang

Keywords:

Asynchronous Solidification, Colloidal Forming, Inner Stress, Nonuniform Shrinkage

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] L. J. Gauckler, Th. Graule and F. Baader: Mater. Chem. Phys. Vol. 61 (1999), p.78.

Google Scholar

[2] Albert C. Young, Ogbemi O. Omatete, Mark A. Janney and Paul A. Menchhofer: J. Am. Ceram. Soc. Vol. 74 (1991), p.612.

Google Scholar

[3] Sasa Novak, Tomaz Kosmac, Kristoffer Krnel and Goran Drazic: J. Euro. Ceram. Soc. Vol. 22 (2002), p.289.

Google Scholar

[4] Jinlong Yang, Liang Su, Liguo Ma and Yong Huang: Key Eng. Mater. Vols. 224-226(2002), p.667.

Google Scholar

[5] Lei Zhao, Jin-long yang, Li-guo Ma and Yong huang: Mater. Lett. Vol. 56 (2002), p.990.

Google Scholar

[6] Guo Ruisong, Chen Yirui, Yang Zhengfang and Yuan Qiming: Journal of Tianjin University Vol. 27 (1994), p.665.

Google Scholar

[7] E. N. Abbas, Y. P. Harn, B. S. Draskovich and J. P. Pollinger: J. Am. Ceram. Soc. Vol. 82 (1999), p.513.

Google Scholar

[1] [2] [3] [4] [50] 2 4 6 8 10 12.

Google Scholar

[1] [2] [3] [4] [5] [6] [7] Drying rate / g/hr Drying rate Shrinkage ratio / % Time / hr Shrinkage ratio Fig. 6 The shrinkage ratio and drying rate of Al2O3 disc prepared by gelcasting during drying Fig. 7 The cracks in Al2O3 disc prepared by gelcasting after debinding.

DOI: 10.2139/ssrn.4387190

Google Scholar