최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0633688 (2009-12-08) |
등록번호 | US-9079246 (2015-07-14) |
발명자 / 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 17 인용 특허 : 440 |
A method of making a powder metal compact is disclosed. The method includes forming a coated metallic powder comprising a plurality of coated metallic powder particles having particle cores with nanoscale metallic coating layers disposed thereon, wherein the metallic coating layers have a chemical c
A method of making a powder metal compact is disclosed. The method includes forming a coated metallic powder comprising a plurality of coated metallic powder particles having particle cores with nanoscale metallic coating layers disposed thereon, wherein the metallic coating layers have a chemical composition and the particle cores have a chemical composition that is different than the chemical composition of the metallic coating layers. The method also includes applying a predetermined temperature and a predetermined pressure to the coated powder particles sufficient to form a powder metal compact by solid-phase sintering of the nanoscale metallic coating layers of the plurality of coated powder particles to form a substantially-continuous, cellular nanomatrix of a nanomatrix material, a plurality of dispersed particles dispersed within the cellular nanomatrix and a solid-state bond layer extending throughout the cellular nanomatrix.
1. A method of making a powder metal compact, comprising: forming a coated metallic powder comprising a plurality of coated metallic powder particles having particle cores with nanoscale metallic coating layers having a substantially uniform thickness of 25 to 2500 nm disposed thereon, wherein the m
1. A method of making a powder metal compact, comprising: forming a coated metallic powder comprising a plurality of coated metallic powder particles having particle cores with nanoscale metallic coating layers having a substantially uniform thickness of 25 to 2500 nm disposed thereon, wherein the metallic coating layers have a chemical composition and the particle cores have a chemical composition that is different than the chemical composition of the metallic coating layers; andapplying a predetermined temperature and a predetermined pressure to the coated powder particles sufficient to form a powder metal compact by solid-phase sintering of the nanoscale metallic coating layers of the plurality of coated powder particles to form a substantially-continuous, cellular nanomatrix of a nanomatrix material, a plurality of dispersed particles dispersed within the cellular nanomatrix and a solid-state bond layer extending throughout the cellular nanomatrix. 2. The method of claim 1, wherein forming the coated metallic powder comprises: forming a plurality of metal particles comprising Mg, Al, Zn or Mn, or a combination thereof, for use as the plurality of particle cores; andforming a nanoscale metallic coating layer on each of the plurality of particle cores to form the plurality of coated powder particles, the metallic coating layer comprising Al, Zn, Mn, Mg, Mo, W, Cu, Fe, Si, Ca, Co, Ta, Re or Ni, or an oxide, carbide or nitride thereof, or a combination of any of the aforementioned materials, wherein the metallic coating layer has a chemical composition and the particle core has a chemical composition that is different than the chemical composition of the metallic coating layer. 3. The method of claim 2, wherein forming a nanoscale metallic coating layer on each of the plurality of particle cores to form the plurality of coated powder particles comprises forming at least two layers comprising a first metallic coating layer that is disposed on the particle core and a second metallic coating layer that is disposed on the first layer, the first layer comprising Al or Ni, or a combination thereof, the second metallic coating layer comprising Al, Zn, Mn, Mg, Mo, W, Cu, Fe, Si, Ca, Co, Ta, Re or Ni, or an oxide, carbide or nitride thereof, or a combination of any of the aforementioned materials, the first metallic layer having a chemical composition that is different than a chemical composition of the second metallic layer. 4. The method of claim 1, wherein forming the coated metallic powder comprises: forming a plurality of metal particles comprising a metal having a standard corrosion potential less than Zn, a ceramic, a glass or carbon, or a combination thereof, for use as the plurality of particle cores; andforming a nanoscale metallic coating layer on each of the plurality of particle cores to form the plurality of coated powder particles, the metallic coating layer comprising Al, Zn, Mn, Mg, Mo, W, Cu, Fe, Si, Ca, Co, Ta, Re or Ni, or an oxide, carbide or nitride thereof, or a combination of any of the aforementioned materials, wherein the metallic coating layer has a chemical composition and the particle core has a chemical composition that is different than the chemical composition of the metallic coating layer. 5. The method of claim 1, further comprising compacting the plurality of coated powder particles to form a precursor powder metal compact. 6. The method of claim 5, wherein compacting comprises isostatic pressing of the plurality of powder particles to form the precursor powder compact. 7. The method of claim 6, wherein isostatic pressing is performed at room temperature. 8. The method of claim 6, wherein the particle core comprises Mg and isostatic pressing is performed at room temperature and an isostatic pressure of about 10 ksi to about 60 ksi. 9. The method of claim 5, wherein applying the predetermine temperature and predetermined pressure comprises dynamic forging of the precursor powder compact. 10. The method of claim 9, wherein the predetermined temperature comprises a sintering temperature that is less than a melting temperature of the nanoscale metallic coating layer and a melting temperature of the particle core. 11. The method of claim 9, wherein the particle core comprises Mg and the dynamic forging is performed at a temperature of about 450° C. to about 470° C. and a pressure of about 30 ksi to about 60 ksi. 12. The method of claim 1, further comprising intermixing a plurality of second powder particles into the plurality of coated powder particles to provide a plurality of dispersed second particles within the cellular nanomatrix. 13. The method of claim 12, wherein the dispersed second particles comprise Fe, Ni, Co or Cu, or oxides, nitrides or carbides thereof, or a combination of any of the aforementioned materials. 14. The method of claim 12, wherein intermixing provides a substantially homogeneous dispersion of dispersed second particles within the cellular nanomatrix and the dispersed particles. 15. The method of claim 1, wherein forming the nanoscale metallic coating layers comprises depositing the nanoscale metallic coating layers using physical vapor deposition or chemical vapor deposition, or a combination thereof. 16. The method of claim 15, wherein depositing comprises fluidized bed chemical vapor deposition. 17. The method of claim 15, further comprising repeating the forming of the nanoscale metallic coating layer to form a corresponding plurality of nanoscale coating layers, wherein each of the nanoscale coating layers has a chemical composition that is different than an adjacent metallic coating layer. 18. The method of claim 1, wherein applying the predetermine temperature and predetermined pressure comprises dynamic forging of the coated metallic powder particles. 19. The method of claim 18, wherein the predetermined temperature comprises a sintering temperature that is less than a melting temperature of the nanoscale metallic coating layers and a melting temperature of the particle cores. 20. The method of claim 18, wherein the particle core comprises Mg and the dynamic forging is performed at a predetermined temperature of about 450° C. to about 470° C. and a predetermined pressure of about 30 ksi to about 60 ksi. 21. The method of claim 1, wherein forming the plurality of coated metallic powder particles comprises forming a unimodal distribution of average particle sizes. 22. The method of claim 1, wherein forming the plurality of coated metallic powder particles comprises forming a multimodal distribution of average particle sizes. 23. The method of claim 1, further comprising selecting the particles cores and the metallic coating layers to provide a powder compact that is selectively and controllably dissolvable in a wellbore fluid in response to a changed condition in a wellbore. 24. The method of claim 23, wherein the changed condition comprises a change in a temperature, pressure, flow rate, pH or chemical composition of the wellbore fluid, or a combination thereof. 25. The method of claim 23, wherein the wellbore fluid comprises KCl and the powder compact is selectively and controllably dissolvable at a rate of about 1 to about 246 mg/cm2/hr. 26. The method of claim 23, wherein the wellbore fluid comprises HCl and the powder compact is selectively and controllably dissolvable at a rate of about 4750 to about 7432 mg/cm2/hr. 27. The method of claim 1, further comprising forming the powder compact as a disposable, dissolvable or degradable article. 28. The method of claim 27, wherein the article comprises a selectively and controllably dissolvable downhole article. 29. The method of claim 28, wherein the selectively and controllably dissolvable downhole article comprises a selectively and controllably dissolvable downhole tool or component. 30. The method of claim 29, wherein the selectively and controllably dissolvable downhole tool or component the tool or component comprises a ball. 31. The method of claim 29, wherein the selectively and controllably dissolvable downhole tool or component comprises a telescopic member comprising a central component having a selectively and controllably dissolvable barrier disposed therein.
Copyright KISTI. All Rights Reserved.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.