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A simple method for dipcoating porous reticular carbon foam with aluminum oxide thin-film coatings is presented. Weight gain versus temperature and number of dipcoatings is presented along with scanning electron micrographs of uniform, adherent alumina thin films. Composite foam structures of up to 57% alumina have been prepared. [

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A novel approach has been employed to suspend highly porous alumina particles within the reticular structure of silicon carbide foam. The particles are slightly smaller than the reticular cells that they occupy, thereby permitting them to "rattle" freely when subjected to a gas stream. Potential applications include low-pressure-drop catalyst supports.