Method of making a ceramic fiber replica of a body of reticulated organic foam
AssigneeFoseco International Limited
InventorColin Washbourne
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Abstract
The invention provides a porous refractory ceramic material having a high surface area per unit volume, a high resistance to sudden temperature variations and a low resistance to fluid flow. The material is a ceramic replica of a body of reticulated organic foam in which the ceramic consists essentially of fibrous material. Any non-fibrous particulate matter present is in an amount which makes no significant contribution to the strength of the body. The material is made by impregnating a body of reticulated organic foam with a slurry of finely-divided inorganic fibres, and drying and firing the thus -impregnated body. The material is of value as a catalyst support and as a facing element of burner assemblies.
Claims6
A ceramic replica of a body of reticulated organic foam wherein the ceramic consists wholly or substantially of fibrous material, the average fiber length of the fibrous material being at most 50% of the diameter of the cells of the foam, and any non-fibrous particulate matter present making no significant contribution to the strength of the replica body.
A method of making a ceramic replica, consisting wholly or substantially of fibrous material, of a body of reticulated organic foam comprising the steps of
- impregnating a body of reticulated organic foam with a slurry of finely-divided inorganic fibers, the average fiber length of the fibrous material being at most 50% of the diameter of the cells of the foam, and any non-fibrous particulate matter present making no significant contribution to the strength of the body,
- drying the so-impregnated body, and
- firing the so-impregnated and dried body at a temperature of at least 500.degree.C.
Dependencies are inferred from the claim text.