公开(公告)号：ES2036595T3

公开(公告)日：1993-06-01

申请号：ES87630183

申请日：1987-09-10

Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

Inventor： KENNEDY, CHRISTOPHER R. ,  URQUHART, ANDREW W. ,  WHITE, DANNY R. ,  NEWKIRK, MARC S.

IPC: C04B35/622 ,  C04B35/10 ,  C04B35/65 ,  C22C1/10 ,  C22C29/12 ,  C22C29/16

Abstract: A method is disclosed for producing a ceramic body by oxidation of a parent metal, the ceramic body having a graded microstructure characterized by a plurality of zones differing from each other in one or more properties. The zones in the ceramic body are attained by altering the process conditions during formation of said ceramic body such that a zone of the oxidation reaction product formed posterior to said altering has one or more properties different from a zone of the oxidation reaction product formed anterior to said altering.

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.