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    Method of manufacturing aluminum-substituted hematite
    9.
    发明授权
    Method of manufacturing aluminum-substituted hematite 失效
    制备铝取代赤铁矿的方法

    公开(公告)号：US06849115B2

    公开(公告)日：2005-02-01

    申请号：US10610564

    申请日：2003-07-02

    申请人： Jun Takada ,  Tatsuo Fujii ,  Makoto Nakanishi

    发明人： Jun Takada ,  Tatsuo Fujii ,  Makoto Nakanishi

    IPC分类号： C01G49/06 ,  C01G49/00 ,  C09C1/24 ,  C09C1/22

    CPC分类号： C01G49/0045 ,  C01P2002/72 ,  C01P2002/77 ,  C09C1/24

    摘要： A method of manufacturing aluminum-substituted hematite represented by α-(Fe1-xAlx)2O3 where x=0.01 to 0.15, by mixing an iron compound and an aluminum compound such that an atomic ratio of Fe to Al falls within the range of 99:1 to 85:15, adding citric acid and ethylene glycol to the mixture of the iron compound and aluminum compound to produce a gel, and pyrolyzing the gel, followed by calcining the pyrolyzed product.

    摘要翻译： 通过混合铁化合物和铝化合物，使Fe与Al的原子比落在99〜99的范围内，制造由α-（Fe1-xAlx）2O3表示的铝 - 取代赤铁矿的方法，其中X = 1至85:15，向铁化合物和铝化合物的混合物中加入柠檬酸和乙二醇以产生凝胶，并将凝胶热解，然后煅烧热解产物。

    Nitrided mo alloy worked material having high corrosion resistance, high strength and high toughness and method for production thereof
    10.
    发明申请
    Nitrided mo alloy worked material having high corrosion resistance, high strength and high toughness and method for production thereof 审中-公开
    具有高耐腐蚀性，高强度和高韧性的氮化钼合金加工材料及其制造方法

    公开(公告)号：US20060054247A1

    公开(公告)日：2006-03-16

    申请号：US10509156

    申请日：2003-03-27

    申请人： Jun Takada ,  Masahiro Nagae ,  Makoto Nakanishi ,  Tomohiro Takida

    发明人： Jun Takada ,  Masahiro Nagae ,  Makoto Nakanishi ,  Tomohiro Takida

    IPC分类号： C23C8/24

    CPC分类号： C22C27/04 ,  C23C8/02 ,  C23C8/24 ,  C23C26/00

    摘要： The present invention provides an innovative material which has properties which cannot be achieved with conventional materials, i.e., having satisfactory high corrosion resistance and high strength in very severe corrosive conditions, for example, a 75% sulfuric acid (H2SO4) aqueous solution (180° C.) in addition to high strength at high temperatures and high toughness at low temperatures, and provides a method for effectively manufacturing the innovative material. A worked molybdenum-alloy material, subjected to nitriding, which has high corrosion resistance, high strength, and high toughness, includes fine nitride particles formed by subjecting a nitride-forming-metal element dissolved to form a solid solution in an untreated worked molybdenum-alloy material to internal nitriding, the fine nitride particles being dispersed inside the worked molybdenum-alloy material subjected to nitriding; and a molybdenum nitride layer formed by subjecting a worked structure or a recovered structure at the surface of the untreated worked molybdenum-alloy material to external nitriding, the molybdenum nitride layer being provided at the surface of the worked molybdenum-alloy material subjected to nitriding. A method for manufacturing a worked molybdenum-alloy material subjected to nitriding includes the steps of subjecting an untreated worked alloy material in which at least any one of titanium, zirconium, hafnium, vanadium, niobium, and tantalum is dissolved to form a solid solution to multi-step internal nitriding treatment including a stepwise increase of the treatment temperature, and then subjecting the worked alloy material to external nitriding treatment.

    摘要翻译： 本发明提供了一种创新材料，其具有用常规材料不能实现的性质，即在非常严重的腐蚀条件下具有令人满意的高耐腐蚀性和高强度，例如75％的硫酸（H 2） 除了在高温下的高强度和低温下的高韧性之外，还提供了一种有效地制造创新材料的方法。 具有高耐腐蚀性，高强度和高韧性的经过氮化处理的钼合金材料包括通过将溶解形成固溶体的氮化物形成金属元素在未处理的加工的钼 - 合金材料进行内部氮化，氮化物微粒分散在经受氮化的加工的钼合金材料内; 以及通过在未经处理的加工的钼合金材料的表面处理加工结构或回收结构进行外部氮化而形成的氮化钼层，所述氮化钼层设置在经受氮化的加工的钼合金材料的表面。 制造经过氮化处理的钼合金材料的方法包括以下步骤：使其中溶解有钛，锆，铪，钒，铌和钽中的至少一种的未处理的加工合金材料形成固溶体 包括逐步增加处理温度的多步内部氮化处理，然后对加工的合金材料进行外部氮化处理。