Glass ceramics based antioxidants for the oxidation protection of carbon-carbon composites
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C04B-041/50
C04B-041/85
C04B-041/00
F16D-069/02
C04B-111/00
출원번호
US-0212666
(2014-03-14)
등록번호
US-9388087
(2016-07-12)
발명자
/ 주소
Don, Jarlen
출원인 / 주소
BOARD OF TRUSTEES, SOUTHERN ILLINOIS UNIVERSITY
대리인 / 주소
Stallion, Mark
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
Liquid anti-oxidants made by mixing specific chemical compositions disclosed herein, followed by thorough stirring so that a homogeneous blend of colloidal-like solutions are obtained. Such liquid anti-oxidants are applied to the surface of the carbon-carbon composite that is needed to be protected
Liquid anti-oxidants made by mixing specific chemical compositions disclosed herein, followed by thorough stirring so that a homogeneous blend of colloidal-like solutions are obtained. Such liquid anti-oxidants are applied to the surface of the carbon-carbon composite that is needed to be protected against oxidation by brushing, dipping, spraying, or other painting techniques, and allowed sufficient time for the anti-oxidants to penetrate into the subsurface region of the composite and to let dry in a dry atmosphere. The coated carbon/carbon composites can be heat treated (or charred) at a temperature of about approximately 650 to 950° C. for a time period of about approximately one to seven hours. The above painting/heat treating processes can be repeated one to three or more times in order to obtain sufficient anti-oxidant char on or below the surface to a certain depth of the composite.
대표청구항▼
1. A glass-ceramics based antioxidant for oxidation protection of carbon materials comprising: a water-based anti-oxidant having a char composition range of about 30 to 75 wt % P2O5, about 3 to 25 wt % Al2O3, about 0 to 20 wt % K2O, about 0 to 20 wt % Na2O, about 0 to 20 wt % CaO, about 0 to 20% MgO
1. A glass-ceramics based antioxidant for oxidation protection of carbon materials comprising: a water-based anti-oxidant having a char composition range of about 30 to 75 wt % P2O5, about 3 to 25 wt % Al2O3, about 0 to 20 wt % K2O, about 0 to 20 wt % Na2O, about 0 to 20 wt % CaO, about 0 to 20% MgO, about 0 to 10 wt % SiO2, about 3 to 25 wt % B2O3, and said water-based anti-oxidant having a balance of de-ionized water, and where the water-based anti-oxidant comprises, raw chemical composition having a range of de-inoized H2O about 5-30%, 85% H3PO4 about 10-50%, Al(H2PO4)3 about 5-30%, K2CO3 about 3-20%, B2O3 about 2-20%, KCl about 0-20%, KOH about 0-20%, KH2PO4 about 0-40%, K2B4O7*4(H2O) about 0-40%, Na2CO3 about 0-20%, NaCl about 0-20%, NaOH about 0-20%, NaH2PO4 about 0-40%, Na2B4O7*4(H2O) about 0-30%, Al2O3 about 0-50%, CaCO3 about 0-20%, CaCl2 about 0-20%, and SiO2 about 0-30%. 2. The antioxidant as recited in claim 1, where an aqueous mixture of the water-based anti-oxidant is applied to regions of a carbon material. 3. The antioxidant as recited in claim 2, where the aqueous mixture is mixed using a high speed, high shear colloidal grinders/mill to produce a well dispersed colloidal liquid. 4. The antioxidant as recited in claim 1, where an aqueous mixture the water-based anti-oxidant is applied to regions of a carbon material. 5. The antioxidant as recited in claim 1, where the aqueous mixture is mixed using a high speed, high shear colloidal grinders/mill to produce a well dispersed colloidal liquid. 6. A method for using glass-ceramic based antioxidants for oxidation protection comprising: deriving precursors from raw materials where the precursors include appropriate percentages of glass formers, glass network modifiers and glass intermediates; deriving a liquid antioxidant by mixing the precursors, wherein the liquid antioxidant is the water-based antioxidant of claim 1; applying the liquid antioxidant to a carbon material; and charring the applied liquid antioxidant to form a stable glass and crystalline ceramic protection.
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이 특허에 인용된 특허 (6)
McAllister Lawrence E. (Granger IN) Jannasch Norman E. (South Bend IN), Barrier coating and penetrant providing oxidation protection for carbon-carbon materials.
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