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：ZA8800202B

公开(公告)日：1988-06-30

申请号：ZA8800202

申请日：1988-01-13

Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

Inventor： MARC STEVENS NEWKIRK ,  HAROLD DANIEL LESHER

IPC: C04B35/10 ,  B22F3/12 ,  B28B13/00 ,  C04B35/622 ,  C04B35/65 ,  C04B35/653 ,  C04B35/76 ,  C04B35/80 ,  C22C29/12 ,  C01B ,  C04B

CPC classification number: B22F3/1208 ,  C04B35/652 ,  C22C19/00 ,  C22C33/02

Abstract: An assembly for the preparation of ceramic composite structures includes a segmented container (12) within which a permeable filler is retained and a parent metal body (20) is contacted with the bed (18) of permeable filler. The segmented container (12) is comprised of one or more segments made of a material, such as an Inconel alloy, which has a coefficient of thermal expansion which is significantly greater than that of the filler. The segments are arranged to define between or among them one or more expansion joints which are effective to accommodate circumferential thermal expansion of the segments to thereby inhibit or prevent volumetric expansion of the container (12). A method of forming ceramic composite structures includes heating the resulting assembly to melt and oxidize the parent metal, (20), e.g., aluminum, to form a polycrystalline material comprising an oxidation reaction product which grows through the mass of filler to embed it and thus form the composite structure.

公开(公告)号：ZA8800142B

公开(公告)日：1988-06-28

申请号：ZA8800142

申请日：1988-01-11

Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

Inventor： JACK ANDREW KUSZYK ,  CHRISTOPHER ROBIN KENNEDY

IPC: C04B35/622 ,  B22D41/32 ,  C04B35/10 ,  C04B35/65 ,  C22C29/12 ,  C01B ,  C04B

CPC classification number: B22D41/32 ,  C04B35/652

公开(公告)号：ZA8800058B

公开(公告)日：1988-06-27

申请号：ZA8800058

申请日：1988-01-06

Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

Inventor： EVANS ALLEN LAROCHE, JR.

IPC: C01B20060101 ,  C04B20060101 ,  C01B ,  C04B

公开(公告)号：ZA876911B

公开(公告)日：1988-03-17

申请号：ZA876911

申请日：1987-09-15

Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

Inventor： MARC STEVENS NEWKIRK ,  ADAM JAN GESING

IPC: C04B35/622 ,  C04B35/10 ,  C04B35/65 ,  C04B41/50 ,  C04B41/51 ,  C04B41/87 ,  C04B41/88 ,  C22C1/10 ,  C22C29/12 ,  F41H5/04 ,  C04B ,  B28B ,  C01F ,  C23C

Abstract: The invention comprises a method of making self-supporting composite ceramic structures by the oxidation reaction of a body of molten parent metal precursor with a vapor-phase oxidant to form an oxidation reaction product. This reaction or growth is continued to form a thick, self-supporting ceramic body. The composite is recovered and in a separate subsequent operation, the surface is coated with one or more materials in order to effect desired changes in the properties of the surface, e.g., hardness, corrosion resistance.

公开(公告)号：ZA876905B

公开(公告)日：1988-03-17

申请号：ZA876905

申请日：1987-09-15

Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

Inventor： DANNY RAY WHITE ,  MICHAEL KEVORK AGHAJANIAN ,  HARRY RICHARD ZWICKER

IPC: C04B35/622 ,  B28B1/00 ,  B28B3/02 ,  B28B7/34 ,  C04B35/10 ,  C04B35/65 ,  C04B38/00 ,  C04B38/06 ,  C22C29/12 ,  C04B ,  C01B ,  B28B

Abstract: A method is provided for producing a self-supporting ceramic body comprising a polycrystalline material comprised of the oxidation reaction product of a parent metal (10) and having therein one or more channels which inversely replicate the geometry of a configured fugitive metal (6). The method includes providing an assembly of the configured fugitive metal (6) and the parent metal (10), optionally including a bed of permeable filler (4), and heating the assembly to form a body of molten parent metal. The molten parent metal is oxidized under selected conditions to grow the polycrystalline material to engulf the configured fugitive metal (6) (and to infiltrate the filler (4), if the filler (4) is present) and to cause the fugitive metal (6) to disperse into the engulfing polycrystalline material thereby leaving behind as the one or more channels the space formerly occupied by the configured fugitive metal (6). The method provides self-supporting ceramic bodies having therein one or more channels inversely replicating the shape of the configured fugitive metal (6).

公开(公告)号：ZA876900B

公开(公告)日：1988-03-17

申请号：ZA876900

申请日：1987-09-15

Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

Inventor： MARC STEVENS NEWKIRK ,  HAROLD DANIEL LESHER

IPC: C04B35/622 ,  C04B35/10 ,  C04B35/65 ,  C04B37/02 ,  C22C1/02 ,  C22C1/05 ,  C22C1/10 ,  C22C29/00 ,  C22C29/02 ,  C22C29/06 ,  C22C29/12 ,  C22C29/14 ,  C22C29/16 ,  F41A21/02 ,  C04B ,  B28B ,  C01F

Abstract: A method is provided of producing a self-supporting ceramic composite structure having one or more encasement members (14), such as an encasing stell sleeve, joined to it by growth of the ceramic material to engagement surface(s) of the encasement member(s) (14). A parent metal is contacted with a body of filler (38) which is encased by the encasement mmber(s) (14). 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 body of filler (38) and stops at the engagement surface(s) of the encasement member(s) (14) which thereby determines the surface geometry of the grown ceramic matrix. Upon cooling, the encasement member(s) (14) is shrinkfitted 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.

公开(公告)号：ZA876898B

公开(公告)日：1988-03-17

申请号：ZA876898

申请日：1987-09-15

Applicant: LANXIDE TECHNOLOGY COMPANY LP.

Inventor： ANDREW WILLIARD URQUHART ,  EVANS ALLEN LAROCHE, JR.

IPC: C04B35/622 ,  B28B7/34 ,  C04B35/00 ,  C04B35/10 ,  C04B35/56 ,  C04B35/65 ,  C22C29/00 ,  C22C29/02 ,  C22C29/12 ,  C22C29/14 ,  C22C29/16 ,  B28B ,  C04B

Abstract: There is disclosed a method of producing a self-supporting ceramic composite body having therein at least one cavity which inversely replicates the geometry of an expendable pattern (6). The method includes the steps of surrounding the expendable pattern (6) with a filler material (4) to thereby form a filled cavity within the filler material (4). The expendable pattern (6) is chemically or physically removed from the filler material (4) and a quantity of a parent metal is put into the cavity. The parent metal is heated to a temperature above its melting point and an oxidation reaction process begins whereby the oxidation reaction product infiltrates and embeds the surrounding filler material (4). Excess filler material and/or excess parent metal are removed, thus resulting in a self-supporting ceramic composite body having a cavity in the shape of the expendable pattern (6).

公开(公告)号：ZA8706905B

公开(公告)日：1988-03-17

申请号：ZA8706905

申请日：1987-09-15

Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

Inventor： DANNY RAY WHITE ,  MICHAEL KEVORK AGHAJANIAN ,  HARRY RICHARD ZWICKER

IPC: C04B35/622 ,  B28B1/00 ,  B28B3/02 ,  B28B7/34 ,  C04B35/10 ,  C04B35/65 ,  C04B38/00 ,  C04B38/06 ,  C04B ,  B28B ,  C01B

CPC classification number: B28B3/025 ,  B28B1/00 ,  B28B7/342 ,  C04B35/652 ,  C04B38/061 ,  C04B35/00 ,  C04B38/0051 ,  C04B38/007 ,  C04B38/065 ,  C04B38/069 ,  C04B41/5025

公开(公告)号：ZA8706900B

公开(公告)日：1988-03-17

申请号：ZA8706900

申请日：1987-09-15

Applicant: LANXIDE TECHNOLOGY COMPANY, LP.

Inventor： MARC STEVENS NEWKIRK ,  HAROLD DANIEL LESHER

IPC: C04B35/622 ,  C04B35/10 ,  C04B35/65 ,  C04B37/02 ,  C22C1/02 ,  C22C1/05 ,  C22C1/10 ,  C22C29/00 ,  C22C29/02 ,  C22C29/06 ,  C22C29/12 ,  C22C29/14 ,  C22C29/16 ,  F41A21/02 ,  C04B ,  B28B ,  C01F

CPC classification number: F41A21/02 ,  C04B35/652 ,  C04B37/021 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6583 ,  C04B2235/6587 ,  C04B2237/40 ,  C04B2237/401 ,  C04B2237/402 ,  C04B2237/403 ,  C04B2237/406