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公开(公告)号:WO2022267707A1
公开(公告)日:2022-12-29
申请号:PCT/CN2022/091378
申请日:2022-05-07
Applicant: 中天钢铁集团有限公司 , 常州中天特钢有限公司
IPC: C21C7/00 , C04B2235/3217 , C04B2235/3244 , C04B2235/3418 , C04B2235/402 , C04B2235/422 , C04B2235/9607 , C04B2235/9676 , C04B35/66 , C21C7/0006 , C21C7/06
Abstract: 本发明属于钢铁冶金领域,涉及一种提高铝脱氧轴承钢连浇炉数的生产工艺,本发明LF精炼渣采用CaO-Al2O3-SiO2渣系,终渣碱度CaO/SiO2控制范围3.0~4.5,终渣CaO/Al2O3控制范围1.3~2.5,精炼渣加入量8~10kg/t,同时要求终渣FeO+MnO
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公开(公告)号:WO2021259388A1
公开(公告)日:2021-12-30
申请号:PCT/CN2021/114388
申请日:2021-08-24
Applicant: 广东工业大学
IPC: C04B35/584 , C04B35/593 , C04B35/64 , C04B41/85 , C04B2235/3225 , C04B2235/9607 , C04B41/009 , C04B41/5001
Abstract: 本发明属于陶瓷技术领域,公开了一种用碳包覆制备制备低氧含量、高热导的氮化硅陶瓷的方法及其应用,该方法是将聚多巴胺包覆的的氮化硅粉末与烧结助剂混合,获得混合粉末置于石墨模具,在真空气氛下加热至600~800℃碳化,形成核壳结构的碳-氮化硅粉末,然后加以20~30MPa轴向压力,在保护气氛下,加热至1200~1500℃还原反应,再升温至1600~2000℃烧结,制得氮化硅陶瓷。本发明可精确控制碳层分布和精准调节碳层结构,有效还原氮化硅表面二氧化硅,降低氮化硅粉末氧含量,提高氮化硅陶瓷热导率。该氮化硅陶瓷的致密度高于98.5%,其热导率可达80W/(m·K)以上。
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公开(公告)号:WO2021191444A1
公开(公告)日:2021-09-30
申请号:PCT/EP2021/058013
申请日:2021-03-26
Applicant: HUG ENGINEERING AG
Inventor: MARBERGER, Adrian , KLIMERA, Andreas , VIEWEGER, Georg
IPC: C04B38/00 , C04B35/185 , C04B35/195 , C04B35/626 , C04B41/87 , B01D46/24 , B01J37/02 , B01D46/2429 , B01D46/24491 , B01D46/24492 , C04B2111/00793 , C04B2111/0081 , C04B2235/3232 , C04B2235/3239 , C04B2235/3258 , C04B2235/3463 , C04B2235/3481 , C04B2235/6021 , C04B2235/616 , C04B2235/6567 , C04B2235/9607 , C04B35/6261 , C04B35/6263 , C04B35/62655 , C04B38/0006 , C04B38/0096 , C04B41/009 , C04B41/5027 , C04B41/5041
Abstract: Um einen Formkörper bereitzustellen, welcher eine gute Hochtemperaturbeständigkeit aufweist, an welchem ein Beschichtungsmaterial dauerhaft haftet und welcher einfach herstellbar ist, wird ein Formkörper vorgeschlagen, welcher eine Kanalstruktur, welche durch Formgebung eines Materials des Formkörpers gebildet ist, und eine Porenstruktur in dem Material des Formkörpers umfasst, wobei das Material des Formkörpers ein partikelförmiges Basismaterial umfasst oder zumindest teilweise daraus gebildet ist, wobei das Basismaterial ein Cordieritmaterial und/oder ein Mullitmaterial umfasst, wobei Partikel des Basismaterials mittelbar und/oder unmittelbar miteinander verbunden sind und wobei in Poren der Porenstruktur ungefähr 5 Vol.-% eines Beschichtungsmaterials oder mehr, bezogen auf ein Gesamtvolumen der Porenstruktur, aufnehmbar oder aufgenommen sind.
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公开(公告)号:WO2021148978A1
公开(公告)日:2021-07-29
申请号:PCT/IB2021/050457
申请日:2021-01-21
Applicant: MERSEN SCOTLAND HOLYTOWN LIMITED
Inventor: BARTLETT, Ian , TODA, Marcin
IPC: C04B35/626 , C04B35/83 , E04B1/78 , F16L59/00 , D01F1/10 , C04B2235/424 , C04B2235/5248 , C04B2235/526 , C04B2235/5264 , C04B2235/6027 , C04B2235/94 , C04B2235/9607 , C04B35/6261 , C04B35/6264 , D01F9/14 , F16L59/028
Abstract: Process for making a thermal insulation material based on carbon and comprising carbon fibers, suitable for use at temperatures above 1 500 °C, said process comprising the steps of: - Providing carbon fibers with embedded carbon black particles; - Cutting or milling said carbon fibers to obtain short carbon filaments; - Preparing a slurry by introducing said short carbon filaments in a liquid phase comprising a binder capable of forming a carbon residue upon pyrolysis under non-oxidixing conditions; - Casting said slurry into a mold capable of separating the slurry into a wet green body and a liquid phase; - Drying and heat treating said wet green body to obtain a thermal insulation material.
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公开(公告)号:WO2022164542A2
公开(公告)日:2022-08-04
申请号:PCT/US2021/064281
申请日:2021-12-20
Inventor: CORRAL, Erica
IPC: C04B35/584 , C04B35/587 , C04B35/645 , C04B2235/3206 , C04B2235/3262 , C04B2235/3418 , C04B2235/3826 , C04B2235/383 , C04B2235/40 , C04B2235/401 , C04B2235/422 , C04B2235/428 , C04B2235/5454 , C04B2235/6567 , C04B2235/72 , C04B2235/762 , C04B2235/767 , C04B2235/77 , C04B2235/785 , C04B2235/788 , C04B2235/87 , C04B2235/96 , C04B2235/9607 , C04B35/5935
Abstract: Disclosed are ceramic powder compositions that include Si, N, O, C, Mg, and/or Mn in tailored combinations of different crystalline phases for producing high temperature-resistant and high strength ceramic products. In some aspects, a ceramic powder for producing high temperature-resistant and/or high mechanical strength materials comprises a silicon nitride (Si3N4) powder, comprising Si3N4 particles having a size within a range of 30 nm to 700 nm, wherein the Si3N4 powder include alpha and beta phase silicon nitride in an amount up to about 1-100 %vol; and an impurity constituent intermixed with the Si3N4 powder within the ceramic powder, the impurity constituent comprising at least one of silicon (Si), nitrogen (N), oxygen (O), carbon (C), magnesium (Mg), or manganese (Mn), wherein the impurity constituent constitutes less than about 0.1 %wt to 15 %wt of the ceramic powder.
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公开(公告)号:WO2021147411A1
公开(公告)日:2021-07-29
申请号:PCT/CN2020/123536
申请日:2020-10-26
Applicant: 武汉科技大学
IPC: C04B35/66 , C04B35/10 , C04B35/622 , C04B2235/3217 , C04B2235/3418 , C04B2235/3463 , C04B2235/40 , C04B2235/9607
Abstract: 一种相变蓄热自流式耐火浇注料及其制备方法。以55~75质量份的矾土颗粒、10~30质量份的矾土细粉、6~10质量份的α-氧化铝粉、1~3质量份的硅微粉和4~6质量份的铝酸钙水泥为原料,混合得混合料。向混合料中加入0.1~0.3质量份的减水剂和6~7质量份的水,搅拌均匀,即得矾土基自流式浇注料;再将55~75质量份的合金@陶瓷大胶囊颗粒堆积于模具中,得到浇注料骨架;然后将所述矾土基自流式浇注料浇注到所述浇注料骨架中,制得相变蓄热自流式耐火浇注料。其工艺简单,浇注料蓄热密度大、强度高、抗热震性能好、高温应用时热效率高、温度稳定。
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公开(公告)号:WO2021248813A1
公开(公告)日:2021-12-16
申请号:PCT/CN2020/128669
申请日:2020-11-13
Applicant: 基迈克材料科技(苏州)有限公司
IPC: C04B35/111 , C04B35/628 , B33Y70/10 , B33Y10/00 , C04B2235/5409 , C04B2235/5445 , C04B2235/6562 , C04B2235/6567 , C04B2235/77 , C04B2235/96 , C04B2235/9607 , C04B2235/963 , C04B35/622 , C04B35/6261 , C04B35/62625 , C04B35/62655 , C04B35/638 , C04B35/64
Abstract: 本发明公开了一种氧化铝陶瓷及其制备方法,该方法包括如下步骤:将氧化铝粉制成浆料,得到粒径D90小于或等于0.8μm的氧化铝浆料;将氧化铝浆料干燥,得到氧化铝细粉;氧化铝粉中氧化铝的含量≥99wt%;将光敏树脂、第一分散剂和润滑剂加热融化后,加入氧化铝细粉和紫外光吸收剂,混合均匀后进行抽真空处理,得到氧化铝光固化浆料;将氧化铝光固化浆料经3D打印成型,得到氧化铝陶瓷坯体;将氧化铝陶瓷坯体经过常压脱脂烧结,得到氧化铝陶瓷;常压脱脂烧结的条件为:以(0.2~1)℃/min的速率升温至550℃~650℃,保温6h~10h,然后以(1~5)℃/min的速率升温至1200℃~1400℃,保温5h~8h。采用该方法制得的氧化铝陶瓷的致密度高、机械性能好,能够满足半导体设备对陶瓷材料的要求。
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公开(公告)号:WO2021196445A1
公开(公告)日:2021-10-07
申请号:PCT/CN2020/101807
申请日:2020-07-14
Applicant: 大连理工大学
IPC: C04B35/465 , C04B35/622 , H01L35/22 , C04B2235/3227 , C04B2235/6581 , C04B2235/9607 , H01L35/34
Abstract: 一种CaTiO3基氧化物热电材料及其制备方法。CaTiO3基氧化物热电材料化学式为Ca1-xLaxTiO3,其中03、SrTiO3等氧化物热电材料性能相媲美CaTiO3基热电材料,其中Ca0.85La0.15TiO3陶瓷片的功率因子更是高达8.2μWcm-1K-2(1000K左右),室温(300K左右)则高达9.2μWcm-1K-2;电导率则高达2015Scm-1(300K)。CaTiO3基氧化物热电材料具有目前在钛酸钙陶瓷中最高的热电性能。CaTiO3基氧化物热电材料的制备方法,其工艺简单、成本低廉,能制备出高热电性能的CaTiO3基陶瓷片。
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公开(公告)号:WO2021141676A2
公开(公告)日:2021-07-15
申请号:PCT/US2020/060918
申请日:2020-11-17
Applicant: HERAEUS CONAMIC NORTH AMERICA LLC
Inventor: WALKER, Luke , BISTA, Saurav , DONELON, Matthew, Joseph , KENNEDY, Steven, Roger
IPC: C04B35/44 , C04B35/626 , C04B35/645 , C04B38/00 , H01J37/32 , C04B2235/3217 , C04B2235/3222 , C04B2235/3225 , C04B2235/3244 , C04B2235/5409 , C04B2235/5436 , C04B2235/5445 , C04B2235/5463 , C04B2235/6562 , C04B2235/6565 , C04B2235/6567 , C04B2235/6581 , C04B2235/662 , C04B2235/666 , C04B2235/72 , C04B2235/728 , C04B2235/764 , C04B2235/77 , C04B2235/775 , C04B2235/782 , C04B2235/785 , C04B2235/786 , C04B2235/80 , C04B2235/95 , C04B2235/96 , C04B2235/9607 , C04B2235/963 , C04B35/6261 , C04B35/6263 , C04B35/62675 , C04B38/0054 , H01J37/32467 , H01J37/32495
Abstract: Disclosed herein is a sintered ceramic body comprising from 90% to 99.9% by volume of polycrystalline yttrium aluminum garnet (YAG) as measured using XRD and image processing methods and a volumetric porosity of from 0.1 to 4% as calculated from density measurements performed in accordance with ASTM B962-17. The sintered ceramic body may have a total purity of 99.99% and greater and a grain size of from 0.3 to 8 µm. A method of making the sintered ceramic body is also disclosed.
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