Additives for property modification in ceramic composite bodies
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C04B-035/58
B22F-003/26
출원번호
US-0960407
(1993-01-11)
국제출원번호
PCT/US91/04951
(1991-07-12)
§371/§102 date
19930111
(19930111)
국제공개번호
WO-9200933
(1992-01-23)
발명자
/ 주소
Claar Terry D. (Newark DE) Schiroky Gerhard H. (Hockessin DE) Pochopien Kevin P. (Oxford PA) Ravi Vilupanur A. (Bear DE) Wang James C. (San Diego CA) Dwivedi Ratnesh K. (Wilmington DE)
출원인 / 주소
Lanxide Technology Company, LP (Newark DE 02)
인용정보
피인용 횟수 :
6인용 특허 :
0
초록▼
This invention relates generally to a novel method of manufacturing a composite body. More particularly, the present invention relates to a method for modifying the resultant properties of a composite body, by, for example, minimizing the amount of porosity present in the composite body. Moreover, a
This invention relates generally to a novel method of manufacturing a composite body. More particularly, the present invention relates to a method for modifying the resultant properties of a composite body, by, for example, minimizing the amount of porosity present in the composite body. Moreover, additives, whether used alone or in combination, (1) can be admixed with the permeable mass, (2) can be mixed or alloyed with the parent metal, (3) can be placed at an interface between the parent metal and the preform or mass of filler material, (4) or any combination of the aforementioned methods, to modify properties of the resultant composite body. Particularly, additives such as VC, NbC, WC, W2B5, TaC, ZrC, ZrB2, SiB6, SiC, MgO, Al2O3, ZrO2, CeO2, Y2O3, La2O3, MgAl2O4, HfO2, ZrSiO4, Yb2O3 and Mo2B5 can be combined with the permeable mass in an amount of about 5-50 percent by weight, prior to reactively infiltrating the permeable mass. Moreover, an additive may also include substantially pure elemental metals (e.g., Nb, Ti, Hf, V, Ta, Cr, Mo, Al, Cr, Si, Co and W) which may be provided by any of the methods discussed above herein.
대표청구항▼
A method of producing a self-supporting body comprising: selecting a parent metal; providing a permeable mass comprising at least one property-modifying additive comprising at least one metallic material selected from the group consisting of Nb, Ti, W, Mo, V, Hf, Ta, Cr, Al, Si, Ni and Co, and at le
A method of producing a self-supporting body comprising: selecting a parent metal; providing a permeable mass comprising at least one property-modifying additive comprising at least one metallic material selected from the group consisting of Nb, Ti, W, Mo, V, Hf, Ta, Cr, Al, Si, Ni and Co, and at least one material selected from the group consisting of (1) boron carbide, (2) a boron source material and a carbon source material and (3) boron carbide and at least one of a boron source material and a carbon source material; heating said parent metal in a substantially inert atmosphere to a temperature above its melting point to form a body of molten parent metal and contacting said body of molten parent metal with said permeable mass; maintaining said temperature for a time sufficient to permit infiltration of said molten parent metal into said permeable mass and to permit reaction of said molten parent metal with said permeable mass; and continuing said infiltration reaction for a time sufficient to produce said self-supporting body, whereby said at least one additive modifies at least one property in said self-supporting body.
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이 특허를 인용한 특허 (6)
Sandhage, Kenneth H.; Unocic, Raymond; Dickerson, Matthew; Guerra, Kamila; Timberlake, Matthew, Method for fabricating high-melting, wear-resistant ceramics and ceramic composites at low temperatures.
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