Permeability and dynamic elastic moduli of controlled porosity ultra-precision aerostatic structures
Date
2014-03-03T00:00:00Z
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Journal Title
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Volume Title
Publisher
Elsevier Science B.V., Amsterdam.
Department
Type
Article
ISSN
0272-8842
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Citation
I.S. Durazo-Cardenas, J. Corbett and D.J. Stephenson, Permeability and dynamic elastic moduli of controlled porosity ultra-precision aerostatic structures, Ceramics International,
Volume 40, Issue 2, March 2014, Pages 3041–3051.
Abstract
Porous ceramic aerostatic bearings enable precise and smooth motion and improved stiffness compared with widely used orifice restrictor bearings. However, the processing techniques so far used are too complex or rely in lowering the sintering temperature to increase fluid flow. Preferred combinations of fine-grade alumina powders and starch granules were used to produce quality porous structures using fixed processing parameters. Component shrinkage, permeability, pore size and elastic properties were comprehensively characterised as a function of porosity. The new porous ceramic structures exhibited controllable and reproducible permeability and modulus, within the range required for ultra-precision porous aerostatic applications
Description
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Keywords
Porous ceramic aerostatic bearings
Rights
NOTICE: this is the author’s version of a work that was accepted for publication in Ceramics International. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Ceramics International, VOL 40, ISSUE 2, 2014, DOI: 10.1016/j.ceramint.2013.10.003