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    HAFNIA-MODIFIED RARE-EARTH METAL-BASED CERAMIC BODIES AND CASTING PROCESSES PERFORMED THEREWITH
    4.
    发明申请
    HAFNIA-MODIFIED RARE-EARTH METAL-BASED CERAMIC BODIES AND CASTING PROCESSES PERFORMED THEREWITH 有权
    HAFNIA改性稀土金属基陶瓷体和铸造工艺

    公开(公告)号：US20090197758A1

    公开(公告)日：2009-08-06

    申请号：US12023314

    申请日：2008-01-31

    申请人： Stephen Francis Bancheri ,  Frederic Joseph Klug ,  Bernard Patrick Bewlay

    发明人： Stephen Francis Bancheri ,  Frederic Joseph Klug ,  Bernard Patrick Bewlay

    IPC分类号： C04B35/50

    CPC分类号： C04B35/50 ,  B22C1/00 ,  C04B35/486 ,  C04B2235/3225 ,  C04B2235/5436 ,  C04B2235/5481 ,  C04B2235/762 ,  C04B2235/80 ,  C04B2235/9676

    摘要： Compositions suitable for use as cores and shell molds for casting of reactive metal alloys, and casting processes for producing components from such alloys. The composition contains a sintered particulate material of hafnia and at least one additional metal oxide in amounts to yield a ceramic composition containing up to 70 molar percent of hafnia, wherein the additional metal oxide is a rare-earth oxide, the sintered particulate material contains first and second phases, the first phase is the rare-earth oxide and hafnia in solid solution, the second phase is a compound of the rare-earth oxide and hafnia, and the second phase is less reactive with the reactive metal alloy than the first phase.

    摘要翻译： 适合用作用于铸造活性金属合金的芯和壳模的组合物，以及用于从这种合金制备组分的铸造工艺。 该组合物含有哈夫尼亚的烧结颗粒材料和至少一种另外的金属氧化物，其量可以产生含有至多70摩尔％的铪的陶瓷组合物，其中附加的金属氧化物是稀土氧化物，烧结颗粒材料包含第一 第二相是固溶体中的稀土氧化物和铪，第二相是稀土氧化物和铪的化合物，第二相与反应性金属合金的反应性低于第一相 。

    Hafnia-modified rare-earth metal-based ceramic bodies and casting processes performed therewith
    5.
    发明授权
    Hafnia-modified rare-earth metal-based ceramic bodies and casting processes performed therewith 有权
    哈夫尼纳改性的稀土金属基陶瓷体和用其进行的铸造工艺

    公开(公告)号：US07845390B2

    公开(公告)日：2010-12-07

    申请号：US12023314

    申请日：2008-01-31

    申请人： Stephen Francis Bancheri ,  Frederic Joseph Klug ,  Bernard Patrick Bewlay

    发明人： Stephen Francis Bancheri ,  Frederic Joseph Klug ,  Bernard Patrick Bewlay

    IPC分类号： B22C1/00 ,  B22C9/10

    CPC分类号： C04B35/50 ,  B22C1/00 ,  C04B35/486 ,  C04B2235/3225 ,  C04B2235/5436 ,  C04B2235/5481 ,  C04B2235/762 ,  C04B2235/80 ,  C04B2235/9676

    摘要： Compositions suitable for use as cores and shell molds for casting of reactive metal alloys, and casting processes for producing components from such alloys. The composition contains a sintered particulate material of hafnia and at least one additional metal oxide in amounts to yield a ceramic composition containing up to 70 molar percent of hafnia, wherein the additional metal oxide is a rare-earth oxide, the sintered particulate material contains first and second phases, the first phase is the rare-earth oxide and hafnia in solid solution, the second phase is a compound of the rare-earth oxide and hafnia, and the second phase is less reactive with the reactive metal alloy than the first phase.

    摘要翻译： 适合用作用于铸造活性金属合金的芯和壳模的组合物，以及用于从这种合金制备组分的铸造工艺。 该组合物含有哈夫尼亚的烧结颗粒材料和至少一种另外的金属氧化物，其量可以产生含有至多70摩尔％的铪的陶瓷组合物，其中附加的金属氧化物是稀土氧化物，烧结颗粒材料包含第一 第二相是固溶体中的稀土氧化物和铪，第二相是稀土氧化物和铪的化合物，第二相与反应性金属合金的反应性低于第一相 。

    METHOD FOR REMOVAL OF CORES FROM NIOBIUM-BASED PART, AND RELATED CASTING PROCESS
    7.
    发明申请
    METHOD FOR REMOVAL OF CORES FROM NIOBIUM-BASED PART, AND RELATED CASTING PROCESS 审中-公开
    从基于铌的部件去除晶圆的方法和相关的铸造工艺

    公开(公告)号：US20080295988A1

    公开(公告)日：2008-12-04

    申请号：US12167774

    申请日：2008-07-03

    申请人： Stephen Francis Bancheri ,  Frederic Joseph Klug ,  Robert Joseph Lyons ,  Joan Katherine McKiever

    发明人： Stephen Francis Bancheri ,  Frederic Joseph Klug ,  Robert Joseph Lyons ,  Joan Katherine McKiever

    IPC分类号： C01F17/00

    CPC分类号： B22D29/002

    摘要： A method of removing an yttria-based core from a niobium-based part is described. In the method, the core is treated with an effective amount of a leaching composition. The leaching composition is based on nitric acid, or a combination of nitric acid and phosphoric acid. The core material is effectively removed from the niobium-based part, and the process of removing the core does not detrimentally affect the quality of the part. Related casting techniques for various niobium-based parts are also described.

    摘要翻译： 描述了从基于铌的部件去除基于氧化钇的芯的方法。 在该方法中，用有效量的浸出组合物处理核。 浸出组合物基于硝酸或硝酸和磷酸的组合。 核心材料被有效地从铌基部分除去，并且去除芯的过程不会不利地影响部件的质量。 还描述了各种铌基部件的相关铸造技术。