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    • 9. 发明公开
    • 금속 입자의 구형 입상화 및 응집화 방법 및 상기 방법으로제조된 금속 입자, 상기 금속 입자로부터 제조된 애노드
    • 金属颗粒的球形颗粒和金属颗粒的制备方法,金属颗粒制成的阳离子
    • KR1020080003314A
    • 2008-01-07
    • KR1020077020910
    • 2006-01-27
    • 닝시아 오리엔트 탄탈럼 인더스트리 코포레이션 엘티디
    • 허지린판룬타오정아이구오청위에웨이마위에종리우홍동양구오치왕춘시앙왕옌핑정스핑
    • B22F1/00B22F9/00H01G9/042
    • B22F1/0096B22F2998/00B22F2998/10B22F2999/00H01G9/0525B22F9/22B22F9/023B22F1/0014B22F1/0048B22F1/0055B22F1/0085B22F2201/20B22F9/04B22F2009/042
    • A method for spherically granulating and agglomerating metal particles such as tantalum and/or niobium powders is described in the present invention, which includes the steps of: a). comminuting the metal particles to form fine particles having D50 less than 50 mum: b). granulating the comminuted metal particles comprising volatile liquid, for example, tantalum and/or niobium particles comprising volatile liquid, to form wet spherical particles; c). still drying the wet spherical particles and removing volatile liquid to form flowable pre-agglomerated particles with increased bulk density; d). heat treating the pre-agglomerated particles; e). screening the heat treated powder to obtain the flowable agglomerated particles. The present invention provides a flowable spherical agglomerated metal particles, and especially tantalum and/or niobium particles having improved properties. The present agglomerated tantalum powder have a flow rate of at least about 2.0 g/sec, a BET surface area of from about 0.2 to about 6.0 m^2/g, a FSSS of at least 1.0 mum, a Scott bulk density of from about 1.2 g/cm^3 to about 5.5 g/cm^3. The present agglomerated niobium powder have a flow rate of at least about 1.0 g/sec, a BET surface area of from about 0.5 to about 8.0 m^2/g, a FSSS of at least 1.0 mum, a Scott bulk density of from about 0.7 g/cm^3 to about 3.5 g/cm^3. Said tantalum and/or niobium metal particles have improved pore size distribution of the sintered anodes and increased pellet crush strength. The present invention further provides an electrolytic capacitor anodes made from the tantalum and/or niobium particles according to the present invention having a capacitance of from about 5,000muFV/g to about 300,000muFV/g.
    • 在本发明中描述了一种用于球形造粒和附聚如钽和/或铌粉末的金属颗粒的方法,其包括以下步骤:a)。 粉碎金属颗粒以形成D50小于50μm的细颗粒:b)。 将包含挥发性液体的粉碎金属颗粒,例如包含挥发性液体的钽和​​/或铌颗粒造粒,以形成湿球形颗粒; C)。 仍然干燥湿球形颗粒并除去挥发性液体以形成具有增加堆积密度的可流动的预凝聚颗粒; D)。 热处理预凝聚的颗粒; E)。 筛选热处理粉末以获得可流动的附聚颗粒。 本发明提供了一种可流动的球形附聚金属颗粒,特别是具有改进性能的钽和/或铌颗粒。 本发明的聚集的钽粉末的流速为至少约2.0g / sec,BET表面积为约0.2至约6.0m 2 / g,FSSS为至少1.0μm,Scott堆积密度为约 1.2g / cm 3至约5.5g / cm 3。 本发明的聚结铌粉末的流速为至少约1.0g / sec,BET表面积为约0.5至约8.0m 2 / g,FSSS为至少1.0μm,Scott堆积密度为约 0.7g / cm 3至约3.5g / cm 3。 所述钽和/或铌金属颗粒具有改善的烧结阳极的孔径分布和增加的颗粒粉碎强度。 本发明还提供一种由根据本发明的钽和/或铌颗粒制成的电容器阳极,其电容为约5,000mFF / g至约300,000muFV / g。
    • 10. 发明公开
    • 초경합금 또는 서멧 응집 분말 혼합물의 제조 방법
    • 制备碳化硅或陶瓷粉末混合物的方法
    • KR1020070115720A
    • 2007-12-06
    • KR1020070052705
    • 2007-05-30
    • 산드빅 인터렉츄얼 프로퍼티 에이비
    • 카웁피안니카이우테르스트룀울프
    • B22F9/08B22F9/00
    • B22F1/0059B22F1/0096B22F2998/00C22C29/08
    • An improved manufacturing method is provided to obtain cemented carbide or cermet agglomerates with good flow properties and good plasticity. As a method of preparing an agglomerated powder mixture that is ready to be pressed by wet milling a powder mixture containing a binder and spray drying the slurry to an agglomerated powder, the method is characterized in that the binder is a baroplastic polymer having a pressure induced transformation from hard to soft. The powder mixture is a cemented carbide, cermet or ceramic powder mixture, and the pressure induced transformation from hard to soft takes place within a pressure range of from 10 to 50 MPa. The baroplastic material is a block copolymer composition of a core-shell polymer formed of particles comprising a core polymer with soft properties and a shell polymer with hard properties, wherein the size of the particles is 50 to 200 nm. The baroplastic polymer comprises a hard component in which the polymer is polystyrene, poly(butyl methacrylate), poly(caprolactone), poly(ethyl methacrylate), poly(methyl methacrylate) or poly(hexyl methacrylate), and a soft component in which the polymer is poly(butyl acrylate), poly(methyl acrylate), poly(ethyl acrylate), poly(ethylhexyl acrylate) or poly(caprolactone).
    • 提供了一种改进的制造方法,以获得具有良好流动性和良好塑性的硬质合金或金属陶瓷附聚物。 作为制备凝集的粉末混合物的方法,其通过湿法研磨将粉末混合物压制成粉末混合物并将其喷雾干燥至凝聚粉末,其特征在于粘结剂是压力诱导的压力聚合物 从硬转变为软。 粉末混合物是硬质合金,金属陶瓷或陶瓷粉末混合物,并且在10至50MPa的压力范围内进行从硬到软的压力诱导转化。 压延材料是由包含具有软性能的芯聚合物和具有硬性质的壳聚合物的颗粒形成的核 - 壳聚合物的嵌段共聚物组合物,其中颗粒的尺寸为50至200nm。 压力聚合物包括其中聚合物是聚苯乙烯,聚(甲基丙烯酸丁酯),聚(己内酯),聚(甲基丙烯酸乙酯),聚(甲基丙烯酸甲酯)或聚(甲基丙烯酸己酯))的硬组分,以及其中 聚合物是聚(丙烯酸丁酯),聚(丙烯酸甲酯),聚(丙烯酸乙酯),聚(丙烯酸乙基己酯)或聚(己内酯))。