Filter/heating body produced by a method of spraying a shape

摘要

An improvement process for producing a coated porous ceramic, ceramic composite or metal structure, wherein the impregnation step is carried out by (a) fluidizing said slurry with steam or heated water and spraying said shape with said fluidized slurry or (b) heating said slurry so as to reduce its viscosity and spraying said shape with said reduced viscosity slurry. Manufacture of a single component which functions both as a filter and as a heating element, is made possible by the process of the present invention.