Elsevier

Materials Letters

Volume 58, Issue 26, October 2004, Pages 3348-3349
Materials Letters

Structured oxide ceramics by a sodium chloride moulding technique

https://doi.org/10.1016/j.matlet.2004.06.035Get rights and content

Abstract

Moulding is becoming a powerful technique for the fabrication of structured ceramic microcomponents. The aspect ratio of the structures to be produced has always been a limiting factor for the applicability of moulding techniques. A vacuum moulding process was developed to supply high aspect ratio ceramic structures. Special designed paraffin wax feedstocks based on alumina and sodium chloride moulds were used for the patterning of periodic columnar structures of some centimeter extension with columns of some millimeter height and an aspect ratio of more than 11. It is shown that the processing technique described features a route to obtain ceramic structures of high precision with a minimum of technical requirements.

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Acknowledgements

We thank Mr. H. Bierfeld and Mr. J. Friedrichs for their technical assistance in providing the sodium chloride moulds. We also acknowledge ZSchimmer & Schwarz for free wax samples.

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