Ceramic composite structures having intrinsically fitted encasem

Details Ceramic composite structures having intrinsically fitted encasem Ceramic composite structures having intrinsically fitted encasem

1988-06-24

1989-04-18

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501153, 501 89, 501 96, 501134, 264DIG25, 264DIG36, 264 82, 264 59, 264112, 42 7602, 423 69, 423 89, 423111, C04B 3558

Patent

active

048227595

ABSTRACT:
A method is provided of producing a self-supporting ceramic composite structure having one or more encasement members, such as an encasing steel sleeve, joined to it by growth of the ceramic material to engagement surface(s) of the encasement member(s). A parent metal is contacted with a body of filler which is encased by the encasement member(s). The resulting assembly is heated to melt and oxidize the parent metal, e.g., aluminum, to form a polycrystalline material comprising an oxidation reaction product which grows through the doby of filler and stops at the engagement surface(s) of the encasement member(s) which thereby determines the surface geometry of the grown ceramic matrix. Upon cooling, the encasement member(s) is shrink-fitted about the ceramic composite body. The invention also provides the resultant articles, for example, a ceramic composite body having a stainless steel member affixed thereto.

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"Oxidation of Molten Aluminum Alloys Reaction with Refractories"-M. Drouzy and M. Richard-Mar., 1974-Fonderie, France Co. 332, pp. 121-128.
"Refractories for Aluminum Alloy Melting Furnaces"-B. Clavaud and V. Jost-Sep., 1980-Lillian Brassinga (from French), Jan., 1985.

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