IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0823350
(1997-03-24)
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발명자
/ 주소 |
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| 출원인 / 주소 |
- Integrated Thermal Sciences, Inc.
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
18 인용 특허 :
6 |
초록
▼
Refractory ceramics and composite materials consisting of nitrides, carbides, mixed carbides and oxides, oxycarbides, mixed nitrides and oxides, and oxynitrides of Group IVB metals Hf, Zr, and Ti, Group IIA metals Be, Mg, Ca, Sr, and Ba, and Group IIIB metals Sc, Y, and lanthanides La through Lu are
Refractory ceramics and composite materials consisting of nitrides, carbides, mixed carbides and oxides, oxycarbides, mixed nitrides and oxides, and oxynitrides of Group IVB metals Hf, Zr, and Ti, Group IIA metals Be, Mg, Ca, Sr, and Ba, and Group IIIB metals Sc, Y, and lanthanides La through Lu are used to form refractory articles, or as coatings for refractory articles. These materials and articles have high resistance to molten metals, molten salts, erosion, and high temperature corrosive environments, and can be engineered to have desirable thermal and electrical properties. The refractory materials encompass nitrides, carbides, reacted ternary and quaternary oxides, mixed carbides and oxides, oxycarbides, mixed nitrides and oxides, and oxynitrides and have the general chemical formula M.sub.x1 M'.sub.x2 M".sub.x3 N.sub.y C.sub.w O.sub.z where M is Hf, Zr, or Ti, M' is Be, Mg, Ca, Sr, or Ba, M" is Sc, Y, and lanthanides La through Lu, N is nitrogen, C is carbon, O is oxygen. In particular, nitrides having at least 54 atomic percent metal, ternary oxides having no more than 66.6 atomic percent oxygen, and oxynitrides having at least 33.4 atomic percent metal are preferred. Substoichiometric GroupIVB-GroupIIA and Group IVB-GroupIIIB ternary oxides are also preferred.
대표청구항
▼
[ The invention claimed is:] [1.] A refractory material comprising ternary or quaternary oxides having the formula M.sub.x1 M'.sub.x2 M".sub.x3 O.sub.z, where M is Hf, Zr, or Ti, M' is Be, Mg, Ca, Sr, or Ba, M" is Sc, Y, or a lanthanide metal La through Lu, O is oxygen, and x1>0, x2 and x3.gtoreq.0
[ The invention claimed is:] [1.] A refractory material comprising ternary or quaternary oxides having the formula M.sub.x1 M'.sub.x2 M".sub.x3 O.sub.z, where M is Hf, Zr, or Ti, M' is Be, Mg, Ca, Sr, or Ba, M" is Sc, Y, or a lanthanide metal La through Lu, O is oxygen, and x1>0, x2 and x3.gtoreq.0 but x2+x3.noteq.0, and z>0, and having a sub-stoichiometric atomic ratio.
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