Boron carbide and boron carbide components
원문보기
IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
UP-0867442
(2004-06-14)
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| 등록번호 |
US-7592279
(2009-10-20)
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발명자
/ 주소 |
- Speyer, Robert F.
- Lee, Hyukjae
- Bao, Zhihao
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| 출원인 / 주소 |
- Georgia Tech Research Corporation
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
1 인용 특허 :
30 |
초록
▼
High-density components and products as well as processes for making high-density components and products are disclosed. One exemplary component, among others, includes a boron carbide component comprised of a homogeneous boron carbide powder. The component has at least a 93% relative density (RD) a
High-density components and products as well as processes for making high-density components and products are disclosed. One exemplary component, among others, includes a boron carbide component comprised of a homogeneous boron carbide powder. The component has at least a 93% relative density (RD) and a Vickers hardness of at least 2000 kg/mm2.
대표청구항
▼
The invention claimed is: 1. A component formed by pressureless sintering and then hot isostatic pressing of a green body that is comprised of a powder consisting of boron oxide coated boron carbide particles, a quantity of additional impurities and no sintering additives, said component excluding
The invention claimed is: 1. A component formed by pressureless sintering and then hot isostatic pressing of a green body that is comprised of a powder consisting of boron oxide coated boron carbide particles, a quantity of additional impurities and no sintering additives, said component excluding boron oxide and consisting essentially of sintered boron carbide and said quantity of additional impurities, and said component having a relative density of at least 99%. 2. A component according to claim 1, wherein said component has a Vickers hardness of up to 2400 Kg/mm2. 3. A component according to claim 1, wherein said component is shaped to the contour of a part of a human body. 4. A component according to claim 3, wherein said component is a helmet. 5. A component according to claim 3, wherein said part of said human body is head, or torso, or back, or groin, or arm, or leg, or shoulder, or hip. 6. A component according to claim 3, wherein said contour corresponds to either a male body or a female body. 7. A component according to claim 1, wherein said component has a Vickers hardness of at least 2500 kg/mm2. 8. A component according to claim 1, wherein said component has a relative density of 99%-99.8%, and a fracture toughness of 3.0 to 3.9 MPa·m1/2. 9. A component formed by pressureless sintering and then hot isostatic pressing of a green body that is comprised of a powder consisting of boron oxide coated boron carbide particles, a quantity of additional impurities and no sintering additives, said component excluding boron oxide and consisting of a sintered body of boron carbide and said quantity of additional impurities, and having a relative density of at least 99%. 10. A component according to claim 9, wherein said sintered body is shaped to the contour of a part of a human body. 11. A component according to claim 9, wherein said sintered body is a helmet. 12. A component according to claim 10, wherein said part of said human body is head, or torso, or back, or groin, or arm, or leg, or shoulder, or hip. 13. A component according to claim 10, wherein said contour corresponds to either a male body or a female body.
이 특허에 인용된 특허 (30)
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