[미국특허]
Composite body including a nitride material, a carbide material, and an amorphous phase material
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C04B-035/577
C04B-035/596
출원번호
US-0628684
(2012-09-27)
등록번호
US-8741797
(2014-06-03)
발명자
/ 주소
Reilly, Christopher J.
Pujari, Vimal K.
Cortellini, Edmund A.
McElwee, David M.
출원인 / 주소
Saint-Gobain Ceramics & Plastics, Inc.
대리인 / 주소
Young, Robert N.
인용정보
피인용 횟수 :
0인용 특허 :
24
초록▼
A composite article having a body including a first phase that includes a nitride material, a second phase that includes a carbide material, and a third phase having one of an amorphous phase material with a nitrogen content of at least about 1.6 wt % or an amorphous phase material comprising carbon
A composite article having a body including a first phase that includes a nitride material, a second phase that includes a carbide material, and a third phase having one of an amorphous phase material with a nitrogen content of at least about 1.6 wt % or an amorphous phase material comprising carbon.
대표청구항▼
1. A composite article comprising: a body including:a first phase comprising a nitride material;a second phase comprising a carbide material, wherein the first phase is present in an amount greater than the second phase; anda third phase comprising a first amorphous phase portion that comprises a ma
1. A composite article comprising: a body including:a first phase comprising a nitride material;a second phase comprising a carbide material, wherein the first phase is present in an amount greater than the second phase; anda third phase comprising a first amorphous phase portion that comprises a magnesium, alumina oxide material,wherein the body comprises a nitrogen content in excess of a stoichiometric amount of nitrogen associated with the nitride material. 2. The composite article of claim 1, wherein the first phase comprises silicon nitride. 3. The composite article of claim 1, wherein the first phase comprises a crystalline material comprising grains and wherein the grains have an average grain size of not greater than about 10 microns. 4. The composite article of claim 1, wherein the second phase comprises silicon carbide. 5. The composite article of claim 1, wherein the second phase comprises a crystalline material comprising grains, and wherein the grains have an average grain size of not greater than about 500 microns. 6. The composite article of claim 1, wherein the body comprises a greater content of the first phase than a content of the third phase, and wherein the body comprises a greater content of the second phase than the content of the third phase. 7. The composite article of claim 1, wherein the body comprises not greater than about 20 wt % of the third phase. 8. The composite article of claim 1, wherein the first amorphous phase portion of the third phase is located between crystalline grains of the first phase and crystalline grains the second phase, and wherein a second amorphous phase portion of the third phase is located between crystalline grains of the first phase and crystalline grains of the second phase. 9. The composite article of claim 1, wherein the first amorphous phase portion of the third phase comprises a nitrogen content of not greater than about 10 wt % for the total weight of the body. 10. A composite article comprising: a body including:a first phase comprising a nitride material;a second phase comprising a carbide material, wherein the first phase is present in an amount greater than the second phase; anda third phase comprising amorphous carbon,wherein the body comprises a nitrogen content in excess of a stoichiometric amount of nitrogen associated with the nitride material. 11. The composite article of claim 1, wherein a second amorphous phase portion of the third phase comprises a carbon content of at least about 0.5 wt % of the total weight of the body. 12. The composite article of claim 1, wherein the body comprises a hardness of at least about 10 GPa. 13. The composite article of claim 1, wherein the body comprises a fracture toughness (K1c) of at least about 4 MPam(1/2). 14. The composite article of claim 1, wherein the amount of nitrogen is at least about 1.6 wt % greater than a stoichiometric amount associated with the nitride material. 15. The composite article of claim 1, wherein the body has a theoretical density of at least 95%. 16. The composite article of claim 1, wherein the body is essentially free of titanium, zirconium, hafnium, tungsten, molybdenum, tantalum, niobium, chromium, or any combination thereof. 17. The composite article of claim 1, wherein the body is essentially free of titanium, zirconium, hafnium, tungsten, molybdenum, tantalum, niobium, and chromium. 18. The composite article of claim 1, wherein the body comprises iron at a content in a range of 0.05 wt % to 5 wt %. 19. A composite article comprising: a body including:a first phase consisting essentially of silicon nitride;a second phase consisting essentially of silicon carbide, wherein the first phase is present in an amount greater than the second phase; and;a third phase comprising amorphous phase material, wherein: a first amorphous phase portion of the third phase comprises aluminum, magnesium, yttrium, or any combination thereof; anda second amorphous phase portion of the third phase that includes essentially all excess carbon within the body,wherein the body comprises a nitrogen content in excess of a stoichiometric amount of nitrogen associated with the nitride material.
Li Chien-Wei ; Pollinger John ; Yamanis Jean ; Goldacker Jeffrey A., Gas pressure sintered silicon nitride having high strength and stress rupture resistance.
Dunmead Stephen D. (Midland MI) Weimer Alan W. (Midland MI) Carroll Daniel F. (Midland MI) Eisman Glenn A. (Midland MI) Cochran Gene A. (Midland MI) Susnitzky David W. (Midland MI) Beaman Donald R. (, Silicon nitride/silicon carbide composite powders.
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