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Preparation of open-cell alumina ceramic foam with uniform cell structure using plant seed template

journal contribution
posted on 06.12.2017, 00:00 by J Yu, X Sun, Q Li, X Li, Y Liu, Kai DuanKai Duan
Open-cell Al O ceramic foams with uniform cell structures and dense cell struts were fabricated by centrifugal slip casting using the plant seeds as the templates. The rheological characteristic of Al O slurries with up to 50 vol.% solid content was investigated. The shrinkage matching between the Al O green compact and the plant seeds during drying was studied. The effect of solid contents of slurries on change of green density of cell struts along the height of compacts was analyzed. The drying and sintering schedule of Al O green cakes were studied. The results indicated mass segregation of Al O particles with different sizes during centrifugal process was negligible for slurries with high solid loadings with 50 vol. %. The cell struts of green bodies had high density of 63.8% TD. After sintered at 1500 °C for 2 h, the final products had dense cell struts with high sintered density of 98.9%TD and homogeneous microstructure. The porosity and compressive strength ofsintered products was 66.5% and 5.26 MPa, respectively.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Issue

41-42

Start Page

265

End Page

270

Number of Pages

6

ISSN

1022-6680

Location

Switzerland

Publisher

Trans Tech Publications

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Biennial Conference; Dongbei da xue (1993); Institute for Resource Industries and Sustainability (IRIS); Liaoning Institute of Technology; University of Western Australia;

Era Eligible

Yes

Journal

Advanced materials research.

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