Surface treatment process for mechanical parts subject to wear and corrosion
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0923044
(2001-08-06)
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우선권정보 |
FR-0010633 (2000-08-14) |
발명자
/ 주소 |
- Chomer, Stephane
- Teil, Stephan
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출원인 / 주소 |
- Centre Stephanois de Recherches Mecaniques Hydromecanique et Frottement
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대리인 / 주소 |
Morgan & Finnegan, L.L.P.
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인용정보 |
피인용 횟수 :
1 인용 특허 :
2 |
초록
▼
In a surface treatment process for mechanical parts, for conferring on the parts a high resistance to wear and corrosion and a roughness propitious to lubrication, nitriding of the part is followed consecutively by oxidation of the part. The nitriding is applied by immersing the part in a molten sal
In a surface treatment process for mechanical parts, for conferring on the parts a high resistance to wear and corrosion and a roughness propitious to lubrication, nitriding of the part is followed consecutively by oxidation of the part. The nitriding is applied by immersing the part in a molten salt nitriding bath free of sulfur-containing species at a temperature from approximately 500° C. to approximately 700° C. The oxidation is carried out in an oxidizing aqueous solution at a temperature less than approximately 200° C.
대표청구항
▼
In a surface treatment process for mechanical parts, for conferring on the parts a high resistance to wear and corrosion and a roughness propitious to lubrication, nitriding of the part is followed consecutively by oxidation of the part. The nitriding is applied by immersing the part in a molten sal
In a surface treatment process for mechanical parts, for conferring on the parts a high resistance to wear and corrosion and a roughness propitious to lubrication, nitriding of the part is followed consecutively by oxidation of the part. The nitriding is applied by immersing the part in a molten salt nitriding bath free of sulfur-containing species at a temperature from approximately 500° C. to approximately 700° C. The oxidation is carried out in an oxidizing aqueous solution at a temperature less than approximately 200° C. ns extending along substantially the entire length of said body and defining said first diameter, and a pair of substantially flat opposite side walls connected between said opposite arcuate portions, said side walls extending along a substantial portion of said length of said body; external threads defined on said pair of opposite arcuate portions and extending along substantially the entire length of said body; said flat side walls terminate near said first end; and said arcuate portions and said threads are interrupted by said side walls and are circumferentially continuous thereafter from said side walls to said first end. 2. The fusion device according to claim 1, wherein said body is formed of a porous biocompatible material to permit bone tissue ingrowth into the device. 3. The fusion device according to claim 2, wherein said material includes a Group VB element. 4. The fusion device according to claim 2, wherein said body is substantially continuously formed of said porous biocompatible material. 5. The fusion device according to claim 4, wherein said body defines at least one notch at one end of said body configured to receive a driving tool for implanting said device. 6. The fusion device according to claim 1, wherein said body defines a hollow interior along a substantial portion of said length. 7. The fusion devices according to claim 6, wherein said elongated body is open at said first end to communicate with said hollow interior. 8. The fusion device according to claim 6, wherein said opposite side walls define at least one opening in communication with said hollow interior. 9. A fusion device for facilitating arthrodesis in the disc space between adjacent vertebrae, comprising: an elongated body having a length and an outer surface extending along said length, said outer surface including a pair of oppositely disposed arcuate portions and a pair of substantially flat portions extending between said pair of arcuate portions, said pair of arcuate portions defining external threads extending substantially entirely along said length of said body, said pair of substantially flat portions extending along a substantial portion of said length of said body, said pair of substantially flat portions terminating adjacent a first end of said elongated body, said external threads defining at least one circumferentially continuous thread adjacent said first end of said elongated body. 10. The fusion device according to claim 9, wherein said pair of opposite arcuate portions defines an outer dimension adjacent a first end of said elongated body, said outer dimension being adapted for engagement within a lesser dimension of the disc space. 11. The fusion device according to claim 9, wherein said elongated body defines a hollow interior. 12. A fusion device for facilitating arthrodesis in the disc space between adjacent vertebrae, comprising: an elongated body having a length and an outer surface extending along said length, said outer surface including a pair of oppositely disposed arcuate portions and a pair of substantially flat portions extending between said pair of arcuate portions, said pair of arcuate portions defining external threads extending substantially entirely along said length of said body, said pair of substantially flat portions extending along a substantial portion of said length of said body, said elongated body defining a hollow interior, said pair of arcuate portions each defining at least one opening extending therethrough in communication with said hollow interior. 13. The fusion device according to claim 12, further comprising a bone growth inducing material disposed within said hollow interior. 14. The fusion device according to claim 12, wherein said pair of substantially flat portions are disposed generally opposite one another. 15. The fusion device according to claim 12, wherein said pair of substantially flat portions are substantially parallel to one another. 16. The fusion device a
이 특허에 인용된 특허 (2)
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Miyagi Isao,JPX ; Taniguchi Wataru,JPX, Method for treating surface of ferrous material and salt bath furnace used therefor.
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Mournet Sylvie (Gourgois FRX) Wawra Joseph (Saint-Just/Saint-Rambert FRX), Process for the treatment of ferrous metal parts to improve their corrosion resistance and friction properties simultane.
이 특허를 인용한 특허 (1)
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Matsusaka,Noboru; Nakane,Hiroyuki; Iwase,Atsushi, Electromagnetic actuator.
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