[미국특허]
Plasma surface treatment using dielectric barrier discharges
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05D-005/00
H05H-001/24
H05H-001/02
C23C-016/00
H01J-007/24
H05B-031/20
출원번호
US-0831654
(2007-07-31)
등록번호
US-8263178
(2012-09-11)
발명자
/ 주소
Boulos, Maher I.
Kogelschatz, Ulrich
Nessim, Christine
출원인 / 주소
Tekna Plasma Systems Inc.
대리인 / 주소
Fulbright & Jaworski L.L.P.
인용정보
피인용 횟수 :
24인용 특허 :
1
초록▼
A process for the in-flight surface treatment of powders using a Dielectric Barrier Discharge Torch operating at atmospheric pressures or soft vacuum conditions is described herein. The process comprising feeding a powder material into the Dielectric Barrier Discharge Torch yielding powder particles
A process for the in-flight surface treatment of powders using a Dielectric Barrier Discharge Torch operating at atmospheric pressures or soft vacuum conditions is described herein. The process comprising feeding a powder material into the Dielectric Barrier Discharge Torch yielding powder particles exhibiting a reduced powder agglomeration feature; in-flight modifying the surface properties of the particles; and collecting coated powder particles. An apparatus for surface treating micro- and nanoparticles comprising a Dielectric Barrier Discharge Torch operating at atmospheric pressure or soft vacuum conditions is also described herein.
대표청구항▼
1. A process for surface treating powder particles comprising: a) feeding a particulate powder material into a Dielectric Barrier Discharge Torch assembly comprising an upstream shell-type electrode and a downstream shell-type electrode, each shell-type electrode comprising a pair of semi-cylindrica
1. A process for surface treating powder particles comprising: a) feeding a particulate powder material into a Dielectric Barrier Discharge Torch assembly comprising an upstream shell-type electrode and a downstream shell-type electrode, each shell-type electrode comprising a pair of semi-cylindrical electrodes, wherein the downstream shell-type electrode is disposed in a staggered configuration relative to the upstream shell-type electrode;b) in-flight modifying the surface properties of the particles in the Dielectric Barrier Discharge Torch assembly producing surface treated particles; andc) collecting the surface treated particles. 2. The process of claim 1, wherein (b) comprises reacting the surface of the particles with plasma discharge. 3. The process of claim 1, wherein (b) comprises generating a coating material by injecting a coating material precursor into the Dielectric Barrier Discharge Torch assembly and depositing said coating material on the surface of the particles producing coated particles. 4. The process of claim 3, wherein the coated particles comprise a coating selected from the group consisting polymeric, organic, inorganic, metallic, oxide, nitride and carbide. 5. The process of claim 3, wherein said coating material precursor comprises a monomer undergoing plasma polymerization. 6. The process of claim 5, wherein said monomer is selected from the group consisting of acetylene, ethylene, isoprene, hexamethyldisiloxane, tetraethyloxysilane, tetraethyl oxysilicane, diethyl dimethyl siloxane, 1,3-butadiene, styrene, methyl methacrylate, tetrafluoroethelyne, methane, ethane, propane, butane, pentane, hexane, cyclohexane, propylene, benzene, pyrrole, 1-hexene, allylamine, acetyl acetone, ethylene oxide, glycidyl methacrylate, acetonitrile, tetrahydrofuran, ethylacetate, acetic anhydride, aminopropyl trimethoxysilane, aminopropyl triethoxysilane, triethoxyvinyl silane, 1octanol, acrylic acid, ferrocene, cobaltocene, cyclooctateraen iron tricarbonyl, methyl cyclopentadienyl iron dicarbonyl, dicyclopentadienyl iron dicarbonyl dimmer, cyclopentadienyl cobalt cobatlacetylacetonate, nickel acetyleacetonate, dimethyl-(2,4-pentane-dionato) gold (III), nickel carbonyl, iron carbonyl, tin acetylacetonate, indium-acetylacetonate and indium tetramethylheptanedionate. 7. The process of claim 1, wherein the powder particles are selected from the group consisting of micro-particles, nano-particles and mixtures thereof. 8. The process of claim 7, wherein the powder particles are selected from the group consisting of polymer particles, metallic particles, oxides of metallic particles and mixtures thereof. 9. The process of claim 1, wherein the Dielectric Barrier Discharge Torch assembly operates (i) at atmospheric pressures or soft vacuum conditions and (ii) in intermittent mode.
Mazyar, Oleg A.; Johnson, Michael H.; Guest, Randall V.; Carrejo, Nicholas; Furlan, Wayne R.; Gaudette, Sean L.; Xu, Zhiyue, Method of controlling the corrosion rate of alloy particles, alloy particle with controlled corrosion rate, and articles comprising the particle.
Mazyar, Oleg A.; Johnson, Michael H.; Guest, Randall V.; Carrejo, Nicholas; Furlan, Wayne R.; Gaudette, Sean L.; Xu, Zhiyue, Method of controlling the corrosion rate of alloy particles, alloy particle with controlled corrosion rate, and articles comprising the particle.
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