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    Manufacturing process of nickel-based alloy having improved hot sulfidation-corrosion resistance
    2.
    发明授权
    Manufacturing process of nickel-based alloy having improved hot sulfidation-corrosion resistance 有权
    具有改善的耐热硫化 - 耐腐蚀性的镍基合金的制造方法

    公开(公告)号：US06447624B2

    公开(公告)日：2002-09-10

    申请号：US09825948

    申请日：2001-04-05

    申请人： Toshiaki Nonomura ,  Takehiro Ohno ,  Toshihiro Uehara ,  Hiroshi Yakuwa ,  Matsuho Miyasaka ,  Shuhei Nakahama ,  Shigeru Sawada

    发明人： Toshiaki Nonomura ,  Takehiro Ohno ,  Toshihiro Uehara ,  Hiroshi Yakuwa ,  Matsuho Miyasaka ,  Shuhei Nakahama ,  Shigeru Sawada

    IPC分类号： C22F110

    CPC分类号： C22C19/055 ,  C22C19/056 ,  C22F1/10

    摘要： A manufacturing method, particularly a heat treatment method of a Ni-based alloy having sulfidation-corrosion resistance used for component members of corrosion-resistant high-temperature equipment, that is, Waspaloy (a trademark of United Technologies) or its improved Ni-based alloy wherein the high temperature sulfidation-corrosion resistance of the alloy can be improved while maintaining hot strength properties is disclosed. A Ni-based alloy used for the method consists essentially of 0.005 to 0.1% C, 18 to 21% Cr, 12 to 15% Co, 3.5 to 5.0% Mo, not more than 3.25% Ti and 1.2 to 4.0% Al (expressed in mass percentage), with the balance substantially comprising Ni. In the manufacturing method of a Ni-based alloy having improved sulfidation-corrosion resistance, the alloy is, after solution heat treatment, subjected to stabilizing treatment at a temperature not lower than 860° C. and not higher than 920° C. for 1 to 16 hours, and aging treatment at a temperature not lower than 680° C. and not higher than 760° C. for 4 to 48 hours.

    摘要翻译： 特别是具有耐腐蚀性高的设备的组件的耐硫化性的Ni基合金的热处理方法，即Waspaloy（United Technologies的商标）或其改进的Ni基 合金，其中可以提高合金的高温耐硫化腐蚀性，同时保持热强度性能。 用于该方法的Ni基合金主要由0.005至0.1％的C，18至21％的Cr，12至15％的Co，3.5至5.0％的Mo，不超过3.25％的Ti和1.2至4.0％的Al（表达 以质量百分比表示），余量基本上包含Ni。 在具有改善的耐硫化腐蚀性的Ni基合金的制造方法中，在固溶热处理之后，合金在不低于860℃且不高于920℃的温度下进行稳定处理1 至16小时，并在不低于680℃且不高于760℃的温度下老化处理4至48小时。

    High-temperature sulfidation-corrosion resistant nickel-base alloy
    3.
    发明授权
    High-temperature sulfidation-corrosion resistant nickel-base alloy 失效
    高温硫化 - 耐腐蚀镍基合金

    公开(公告)号：US5900078A

    公开(公告)日：1999-05-04

    申请号：US801192

    申请日：1997-02-14

    申请人： Hiroshi Yakuwa ,  Matsuho Miyasaka ,  Toshio Narita ,  Shuhei Nakahama ,  Masamichi Kawasaki

    发明人： Hiroshi Yakuwa ,  Matsuho Miyasaka ,  Toshio Narita ,  Shuhei Nakahama ,  Masamichi Kawasaki

    IPC分类号： C22C19/05

    CPC分类号： C22C19/055 ,  C22C19/056

    摘要： A high-temperature sulfidation-corrosion resistant nickel-base alloy includes 12.about.15 weight % of cobalt, 18.about.21 weight % of chromium, 3.5.about.5 weight % of molybdenum, 0.02.about.0.1 weight % of carbon, at most 2.75 weight % of titanium, and at least 1.6 weight % of aluminum. The remainder is essentially of nickel except for impurities. The high-temperature sulfidation-corrosion resistant nickel-base alloy has sufficient high-temperature strength and is highly resistant to a high-temperature sulfidation corrosion.

    摘要翻译： 耐高温耐硫化腐蚀的镍基合金包括12重量％的钴，18重量％的铬，18重量％的铬，3.5不同的5重量％的钼，0.02不同的0.1重量％的碳，至多2.75重量％ 的钛，和至少1.6重量％的铝。 其余部分基本上是除了杂质以外的镍。 耐高温硫化 - 腐蚀的镍基合金具有足够的高温强度，并且耐高温硫化腐蚀。

    Absorption chiller-heater and method for forming initial anticorrosive film therefor
    9.
    发明授权
    Absorption chiller-heater and method for forming initial anticorrosive film therefor 有权
    吸收式制冷机及其形成初始防腐膜的方法

    公开(公告)号：US06038882A

    公开(公告)日：2000-03-21

    申请号：US177113

    申请日：1998-10-22

    申请人： Tetsuo Kuroda ,  Matsuho Miyasaka ,  Norio Takahashi

    发明人： Tetsuo Kuroda ,  Matsuho Miyasaka ,  Norio Takahashi

    IPC分类号： F25B15/00 ,  C09K5/04 ,  C23C22/40 ,  C23F11/18 ,  F25B15/06 ,  F25B47/00 ,  F25B41/00

    CPC分类号： C09K5/047 ,  C23F11/185 ,  F25B15/06 ,  F25B47/003 ,  Y02B30/62 ,  Y02P20/124

    摘要： An object of the present invention is to provide a method for forming an initial anticorrosive film in an absorption chiller-heater, by selecting optimal conditions of absorbent solution, steel material surface and film-forming operation for forming a good initial anticorrosive film. In the process for forming an initial anticorrosion film in an absorption chiller-heater having steel parts and containing an absorbent solution comprising lithium bromide as its main component and containing a lithium molybdate corrosion inhibitor according to the present invention, the main characteristics are that at least part of the steel parts of the absorption chiller-heater contacting with an absorbent solution at a temperature of higher than 100.degree. C. include a bare metal surface having an arithmetic mean surface roughness of not more than 1.0 .mu.m; the absorbent solution supplied comprises lithium bromide as its main component and contains a lithium molybdate corrosion inhibitor dissolved in the solution at a level of 450-750 ppm; and that an initial anticorrosion film forming operation is conducted at a condition such that amount of the lithium molybdate dissolved in the absorbent solution is maintained at not less than 200 ppm.

    摘要翻译： 本发明的目的是提供一种在吸收式冷却器加热器中形成初始防腐膜的方法，通过选择吸收剂溶液的最佳条件，钢材表面和用于形成良好的初始防腐蚀膜的成膜操作。 在具有钢部件并含有以溴化锂为主要成分并含有本发明的钼酸锂腐蚀抑制剂的吸收剂溶液的吸收式制冷机中形成初始防腐蚀膜的方法中，主要特征是至少 在高于100℃的温度下与吸收剂溶液接触的吸收式制冷机的一部分钢部件包括具有不大于1.0μm的算术平均表面粗糙度的裸金属表面; 提供的吸收剂溶液包括溴化锂作为其主要成分，并含有以450-750ppm的水平溶解在溶液中的钼酸锂腐蚀抑制剂; 并且在使溶解在吸收剂溶液中的钼酸锂的量保持在200ppm以上的条件下进行初始的防腐蚀成膜操作。

    Method of analyzing corrosion and corrosion prevention
    10.
    发明授权
    Method of analyzing corrosion and corrosion prevention 失效
    腐蚀防腐蚀分析方法

    公开(公告)号：US06258252B1

    公开(公告)日：2001-07-10

    申请号：US09115694

    申请日：1998-07-15

    申请人： Matsuho Miyasaka ,  Hirokazu Takayama ,  Kenji Amaya ,  Shigeru Aoki

    发明人： Matsuho Miyasaka ,  Hirokazu Takayama ,  Kenji Amaya ,  Shigeru Aoki

    IPC分类号： G01N1704

    CPC分类号： G01N17/02

    摘要： An object to be analyzed for corrosion and corrosion prevention is divided into a plurality of adjacent regions of plural types by a dividing plane, with one of the adjacent regions being referred to as an attentional region with a boundary as the dividing plane and the other as a non-attentional region with a boundary as the dividing plane. An initial current density or an initial potential is imparted to each element of the boundary of the non-attentional region to effect a boundary element analysis for determining a relationship between a potential and a current density in each the element. A potential distribution and a current density distribution in the attentional region in its entirety are determined, using the relationship between the potential and the current density in each the element of the boundary of the non-attentional region as a boundary condition for the attentional region.

    摘要翻译： 要防腐蚀和防腐蚀的分析对象通过分割平面被分成多个相邻的多个类型的区域，其中一个相邻区域被称为具有作为分割面的边界的注意区域，而另一个被称为 具有边界作为分割平面的非注意区域。 将初始电流密度或初始电位赋予非注意区域的边界的每个元件，以进行边界元素分析，以确定每个元件中的电位和电流密度之间的关系。 使用非注意区域的边界的每个元素中的电势和电流密度之间的关系作为注意区域的边界条件来确定整个注意区域中的电位分布和电流密度分布。