Method for depositing particulate material onto a surface
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05D-001/02
B05D-001/12
출원번호
US-0913874
(2006-05-08)
등록번호
US-8298612
(2012-10-30)
국제출원번호
PCT/CA2006/000736
(2006-05-08)
§371/§102 date
20080603
(20080603)
국제공개번호
WO2006/119620
(2006-11-16)
발명자
/ 주소
Jodoin, Bertrand
출원인 / 주소
University of Ottawa
인용정보
피인용 횟수 :
0인용 특허 :
2
초록▼
An apparatus and method are described for deposition of materials such as particulate materials onto a surface. The methods employ the use of shockwaves or compression waves to project the particulate material onto the surface as desired. This allows for the preparation of solid objects or coated su
An apparatus and method are described for deposition of materials such as particulate materials onto a surface. The methods employ the use of shockwaves or compression waves to project the particulate material onto the surface as desired. This allows for the preparation of solid objects or coated surfaces that exhibit, for example, superior density and uniformity.
대표청구항▼
1. A method for depositing a particulate material onto a surface, such that upon or following deposition the particulate material at least in part fuses to said surface and/or to itself to form a solid mass or coating on the surface, the method comprising the steps of: (1) placing said particulate m
1. A method for depositing a particulate material onto a surface, such that upon or following deposition the particulate material at least in part fuses to said surface and/or to itself to form a solid mass or coating on the surface, the method comprising the steps of: (1) placing said particulate material into a tubular member having a spraying end, and containing a gas or gas mixture;(2) causing at least one shockwave to travel along said tubular member towards said spraying end, and out of said tubular member towards said surface, at least some of said particulate material travelling with or adjacent said shock wave and being projected onto said surface at a velocity sufficient to cause upon impact with said surface at least partial deformation of said particulate material and/or said surface, and fusion with said surface and/or particulate material that has already been deposited on said surface, if present, wherein the shockwave is generated by a shockwave generator comprising a chamber and a valve, the chamber containing a gas or gas mixture having a pressure that is higher than a pressure of said gas or gas mixture in said tubular member, the gas or gas mixture in the chamber being released into said tubular member by opening the valve between the shockwave generator and the tubular member, thereby to generate said shockwave in said tubular member; and(3) optionally repeating steps (1) and (2) to deposit said material in a series of pulses. 2. The method of claim 1, wherein prior to the step of causing said at least one shock wave to travel along said tubular member, the method further comprises the step of: heating said particulate material and/or said gas or gas mixture, either before or after the step of placing said particulate material into said tubular member, preferably to a temperature of from 20 to 1200° C. 3. The method of claim 2, wherein the step of heating comprises heating said particulate material to a temperature sufficient to ensure a ductility and/or malleability of particles of said particulate material to a degree sufficient to allow deformation and/or fusion of the material upon impact with said surface, but insufficient to cause melting or partial melting of said particles. 4. The method of claim 1, wherein said passage of said at least one shockwave along said tubular member causes heating of said gas or gas mixture at or adjacent said shockwave, thereby to heat said particulate material. 5. The method of claim 1, wherein the particulate material exiting said spraying end has at least one characteristic selected from: a speed of from about 200 m/s to about 1500 m/s; anda temperature of from about 20° C. to about 1200° C. 6. The method of claim 1, wherein the step of placing comprises injecting said particulate material through a wall of said tubular member, and into a lumen of said tubular member, preferably at or near to a time of said passage of said shockwave along said tubular member. 7. The method of claim 1, wherein said surface and said tubular member are movable relative to one another to allow deposition of said material over a desired area or region of said surface. 8. The method of claim 1, wherein said particulate material comprises a metal, a metal alloy, a ceramic, a cermet, a polymer, an amorphous material, a nanocrystalline material, copper, aluminium, nickel, zinc, WC—Co, WC—CoCr, CoNiCrAlY, Al12Si, Al12Si+SiC, PEEK or hydroxyapatite. 9. The method of claim 1, wherein the surface comprises a metal, a metal alloy, a ceramic, a cermet, or a polymer. 10. The method of claim 1, wherein the tubular member has a substantially uniform cross-section along its length. 11. The method of claim 1, wherein prior to said releasing, said gas or gas mixture in said chamber has a pressure of from about 200 kPa and about 20 MPa. 12. The method of claim 1, wherein said gas or gas mixture in said tubular member has a pressure at or near atmospheric pressure.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (2)
Alkhimov Anatoly P. (ulitsa Vyazemskogo 2 ; kv. 72 Novosibirsk SUX) Papyrin Anatoly N. (ulitsa Vyazemskogo 2 ; kv. 72 Novosibirsk SUX) Kosarev Vladimir F. (Novosibirsk SUX) Nesterovich Nikolai I. (No, Gas-dynamic spraying method for applying a coating.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.