Durazo-Cardenas, IsidroStephenson, David J.Corbett, John2011-04-212011-04-212010-11-04Durazo-Cardenas IS, Stephenson DJ, Corbett J. (2010) Controlled porosity alumina structures for ultra-precision hydrostatic journal bearings. Journal of the American Ceramic Society, Volume 93, Issue 11, November 2010, pp. 3671-36780002-7820http://dx.doi.org/10.1111/j.1551-2916.2010.03960.xhttp://dspace.lib.cranfield.ac.uk/handle/1826/5234A series of fine-grade alumina powders has been used in combination with maize starch granules to produce porous structures for porous hydrostatic journal- bearing applications. A comprehensive series of tests was conducted to characterize porosity in terms of density, pore size, and permeability. Successful processing of quality journal-bearing components has been demonstrated for preferred combinations of alumina size and starch content, using fixed-processing parameters. The new porous ceramic bearings showed consistent and reproducible properties and are suitable for a wide range of higher precision engineering applications. The porous ceramic-bearing processing route has also proved to be low cost and environmentally sound.en-UKThe definitive version is available at www3.interscience.wiley.comArticle