method for setting gamma alumina in an poroesen ceramic formkoerper.

摘要

A method of applying gamma -alumina to a porous ceramics structure includes the steps of: causing fine particles of gamma -alumina together with a carrier gas to flow through pores in the porous ceramics structure so as to deposit the gamma -alumina fine particles on the surfaces of the skeleton of the porous ceramics structure, and heating the structure with the gamma -aluminum particles deposited thereto to a predetermined temperature thereby fixing the gamma -alumina particles. The fine particles of gamma -alumina are formed by causing an arc discharge between the surface of molten aluminum and an aluminum electrode so as to generate vapor of aluminum, and oxidizing the aluminum vapor by an oxidizing gas which may be Ar-O2 carrier gas which is made to flow through the pores in the porous ceramics structure.