公开(公告)号：ES2033915T3

公开(公告)日：1993-04-01

申请号：ES87630176

申请日：1987-09-03

Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

Inventor： NEWKIRK, MARC S. ,  DWIVEDI, RATNESH K. ,  LESHER, H. DANIEL ,  KANTNER, ROBERT C.

IPC: B22D19/14 ,  B28B7/34 ,  C04B35/10 ,  C04B35/622 ,  C04B35/65 ,  C04B35/653 ,  C04B35/71

Abstract: A method for producing a self-supporting ceramic composite structure comprising a ceramic matrix embedding a filler (38) includes oxidizing a parent metal to form a polycrystalline material comprising the oxidation reaction product of the parent metal with an oxidant and, optionally, one or more metallic constituents, and the filler (38) embedded by the matrix. The method includes heating the parent metal to provide a first source (36) of molten parent metal and a reservoir (34) of molten parent metal and contacting the first source (36) of molten parent metal with a permeable bedding of filler (38). The first source (36) of molten parent metal is reacted with the oxidant to form the oxidation reaction product and is replenished from the reservoir (34) as the reacting continues for a time sufficient to grow the oxidation reaction product to a desired boundary and thereby embed at least a portion of the bedding of filler (38) within the oxidation reaction product to form the ceramic composite structure. The bedding of filler (38) may have any suitable shape, including that of a hollow body, the interior of which is contacted by the first source (36) of molten parent metal to grow the oxidation reaction product through the shaped, hollow body of filler.

公开(公告)号：ES2032855T3

公开(公告)日：1993-03-01

申请号：ES87630182

申请日：1987-09-10

Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

Inventor： DWIVEDI, RATNESH K. ,  KENNEDY, CHRISTOPHER R.

IPC: C04B41/80 ,  C04B35/00 ,  C04B35/622 ,  C04B35/65 ,  C04B41/50 ,  C04B41/87

Abstract: A method of producing self-supporting ceramic structures (12) comprising (i) a polycrystalline oxidation reaction product formed upon oxidation of a molten parent metal (14) with an oxidant, and (ii) interconnected porosity (13) at least partially accessible from one or more surfaces (15) of said ceramic body. A second polycrystalline ceramic material is incorporated into the porosity of said ceramic body to modify or contribute to its properties.