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114 条记录 (耗时 0.016 秒)

    Coating of cathode substrate during aluminum smelting in drained cathode cells
    71.
    发明授权
    Coating of cathode substrate during aluminum smelting in drained cathode cells 失效
    在排出的阴极电池中的铝冶炼期间涂覆阴极基板

    公开(公告)号：US5158655A

    公开(公告)日：1992-10-27

    申请号：US697992

    申请日：1991-05-10

    申请人： Douglas W. Townsend

    发明人： Douglas W. Townsend

    IPC分类号： C23C12/00 ,  C25C3/06 ,  C25D3/66

    CPC分类号： C23C12/00 ,  C25C3/06 ,  C25D3/66

    摘要： The invention relates to a process of electrowinning molten aluminum from alumina dissolved in molten fluoride salts which are essentially cryolite. More specifically the process relates to placing refractory metal raised cathode structures in aluminum reduction cells and treating the raised cathode surfaces to coat them with refractory metal borides. This process deposits coatings composed of titanium diboride and other refractory metal borides on titanium and other refractory metal cathode structures from supersaturated elements dissolved in electrowon molten aluminum. The refractory metal boride coatings are resistant to penetration by the molten aluminum metal.

    摘要翻译： 本发明涉及一种从溶解在基本上是冰晶石的熔融氟化物盐中的氧化铝电解提炼熔融铝的方法。 更具体地，该方法涉及将难熔金属凸起的阴极结构放置在铝还原电池中并且处理凸起的阴极表面以用难熔金属硼化物涂覆它们。 该方法将由二硼化钛和其它难熔金属硼化物组成的涂层从溶解在电焊熔融铝中的过饱和元素沉积在钛和其它难熔金属阴极结构上。 难熔金属硼化物涂层耐熔融铝金属的渗透。

    Gas phase borosiliconization of ferrous surfaces
    72.
    发明授权
    Gas phase borosiliconization of ferrous surfaces 失效
    黑色金属表面的气相硼硅化

    公开(公告)号：US5064691A

    公开(公告)日：1991-11-12

    申请号：US488541

    申请日：1990-03-02

    申请人： John F. Kirner ,  Alejandro L. Cabrera ,  John N. Armor

    发明人： John F. Kirner ,  Alejandro L. Cabrera ,  John N. Armor

    IPC分类号： C23C12/00

    CPC分类号： C23C12/00

    摘要： The surface properties of iron or ferrous alloy are improved by borosiliconizing the surface by contact with a stream of reducing gas containing hydrogen, optionally with an inert gas, to which a gaseous halide or hydride of boron and silicon have been added, either together or sequentially. The temperature of treatment is elevated, e.g. above 350.degree. C., but below 1200.degree. C. Diffusion coatings of both boron and silicon are formed in the ferrous surface. Typical surces of boron and silicon inlude boron trichloride, diborane and silane.

    摘要翻译： 铁或铁合金的表面性能通过与含有氢的还原气体流（任选地与惰性气体）接触来表面改性，其中已经加入了卤化物或硼和硅的氢化物，一起或顺序地 。 治疗的温度升高，例如 高于350℃，但低于1200℃。在铁表面形成硼和硅的扩散涂层。 典型的硼和硅不含三氯化硼，乙硼烷和硅烷。

    Supersaturation plating of aluminum wettable cathode coatings during aluminum smelting in drained cathode cells
    73.
    发明授权
    Supersaturation plating of aluminum wettable cathode coatings during aluminum smelting in drained cathode cells 失效
    在排水阴极电池中铝熔炼过程中铝可湿性阴极涂层的过饱和电镀

    公开(公告)号：US5028301A

    公开(公告)日：1991-07-02

    申请号：US294781

    申请日：1989-01-09

    申请人： Douglas W. Townsend

    发明人： Douglas W. Townsend

    IPC分类号： C23C12/00 ,  C25C3/06 ,  C25D3/66

    CPC分类号： C25D3/66 ,  C23C12/00 ,  C25C3/06

    摘要： This invention relates to a process for electrowinning molten aluminum from alumina dissolved in molten fluoride salts which are essentially cryolite. More specifically the process relates to the treatment of aluminum reduction cell drained solid cathode surfaces to make them wetted by molten aluminum metal. This process deposits a coating composed of titanium diboride and titanium carbide on the solid cathode surfaces from supersaturated dissolved elements in electrowon aluminum. The electrowon aluminum wets the coating on the cathode. The coating makes the cathode surfaces resistant to erosion, chemical attack and penetration by the molten aluminum metal, sodium and cryolite electrolyte contained in that cell.

    摘要翻译： 本发明涉及一种从溶解在基本上为冰晶石的熔融氟化物盐中的氧化铝电解提取熔融铝的方法。 更具体地说，该方法涉及处理铝还原槽排出的固体阴极表面以使其被熔融的铝金属润湿。 该方法由电解铝中的过饱和溶解元素在固体阴极表面上沉积由二硼化钛和碳化钛组成的涂层。 电极铝润湿阴极上的涂层。 涂层使得阴极表面抵抗包含在该电池中的熔融铝金属，钠和冰晶石电解质的侵蚀，化学侵蚀和渗透。

    Method of treating the surface of iron alloy materials
    74.
    发明授权
    Method of treating the surface of iron alloy materials 失效
    铁合金材料表面处理方法

    公开(公告)号：US4765847A

    公开(公告)日：1988-08-23

    申请号：US23862

    申请日：1987-02-03

    申请人： Tohru Arai ,  Hironori Fujita ,  Junji Endo ,  Yoshihiko Sugimoto ,  Yukio Ohta

    发明人： Tohru Arai ,  Hironori Fujita ,  Junji Endo ,  Yoshihiko Sugimoto ,  Yukio Ohta

    IPC分类号： C23C12/00 ,  C23C16/34 ,  C23C16/36 ,  C23C9/10

    CPC分类号： C23C12/00 ,  C23C16/34 ,  C23C16/36

    摘要： A layer of a nitride or carbonitride containing at least one of chromium, Group Va elements, titanium and zirconium is formed on the surface of an iron alloy material which has been nitrided. The layer is formed by heating the iron alloy material at a temperature not exceeding 700.degree. C. with a material containing at least one of chromium, Group Va elements, titanium and zirconium and a treating agent. It is a dense layer bonded tightly to the iron alloy material. As a low temperature not exceeding 700.degree. C. is employed, no large amount of heat energy is required, nor is any thermal strain produced in the iron alloy material.

    摘要翻译： PCT No.PCT / JP86 / 00287 Sec。 371日期1987年2月3日 102（e）1987年2月3日PCT PCT 1986年6月9日PCT公布。 出版物WO86 / 07614 日期为1986年12月31日。在已经被氮化的铁合金材料的表面上形成含有铬，Va族元素，钛和锆中的至少一种的氮化物或碳氮化物层。 通过使用含有铬，Va族元素，钛和锆中的至少一种的材料和处理剂，在不超过700℃的温度下加热铁合金材料来形成该层。 它是与铁合金材料紧密结合的致密层。 由于使用不超过700℃的低温，不需要大量的热能，也不需要在铁合金材料中产生热应变。

    Method of treating steel surfaces to prevent wear, and coating obtained thereby
    75.
    发明授权
    Method of treating steel surfaces to prevent wear, and coating obtained thereby 失效
    钢表面处理方法以防磨损，由此得到涂层

    公开(公告)号：US4435227A

    公开(公告)日：1984-03-06

    申请号：US428661

    申请日：1982-09-30

    申请人： Guy R. Nicolas

    发明人： Guy R. Nicolas

    IPC分类号： C23C12/00 ,  C23C11/04 ,  C23F7/24

    CPC分类号： C23C12/00 ,  Y10T428/12535 ,  Y10T428/12576 ,  Y10T428/12604

    摘要： An object of the present invention is a method for the anti-wear treatment of the surface of steel parts having a carbon content of at least 0.15% and the coating obtained thereby. The method is characterized by the fact that an addition of sulfur, by depositing of a metal sulfide for example, and a vapor-phase chromizing are carried out in sucession on the surface to be treated.The coating obtained is characterized by the presence of a layer of chromium sulfide on the surface and by the partial recrystallization of the underlying M.sub.7 C.sub.3 chromium carbide layer.The invention can be applied to any moving mechanical system which is subject to abrasion. The invention has importance because it increases the resistance to wear and the life of the system treated while limiting the wear of the untreated opposing part as a result of friction.

    摘要翻译： 本发明的目的是一种用于对碳含量至少为0.15％的钢部件的表面进行耐磨处理的方法和由此获得的涂层。 该方法的特征在于，通过在待处理表面上进行硫的添加，例如通过沉积金属硫化物和气相色化来进行。 得到的涂层的特征在于在表面上存在一层硫化铬，并且通过下面的M7C3碳化铬层的部分重结晶。 本发明可以应用于任何可能磨损的移动机械系统。 本发明是重要的，因为它增加了耐磨性和所处理的系统的寿命，同时限制了由于摩擦而导致的未处理的相对部件的磨损。

    Chromizing of steels by gaseous method
    76.
    发明授权
    Chromizing of steels by gaseous method 失效
    用气态法对钢进行镀铬

    公开(公告)号：US4242151A

    公开(公告)日：1980-12-30

    申请号：US87954

    申请日：1979-10-24

    申请人： Robert Leveque

    发明人： Robert Leveque

    IPC分类号： C23C8/38 ,  C21D1/06 ,  C21D1/18 ,  C23C10/10 ,  C23C12/00 ,  C23C11/04 ,  C23C11/16

    CPC分类号： C23C12/00 ,  C21D1/18

    摘要： The object of the present invention is an improvement in chromizing methods, constituted by a method of chromizing steels to a depth e greater than 30 microns, usable for steels with a carbon content of at least 0.2%, especially for steels for construction work and steels for tools, characterized by the combination of three successive treatments, the first of these three treatments consisting of an ionic nitriding of a surface layer between 100 and 350 microns thick, this ionic nitriding being realized in an atmosphere constituted by a mixture of nitrogen and hydrogen, at a temperature of between 450.degree. C. and 650.degree. C., for between 5 and 40 hours, so as to obtain between 1.5% and 2.5% nitrogen in the nitrided layer, the second of these treatments consisting of a chromizing by gaseous method forming chromium carbides, lasting between 5 and 30 hours, and realized at temperatures of between 850.degree. C. and 1,100.degree. C., the third of these three treatments being a thermal treatment comprising a quenching in oil of the chromized piece followed by a tempering at a temperature of between 600.degree. C. and 650.degree. C., lasting between 30 minutes and 10 hours, depending on the size of the piece treated.

    摘要翻译： 本发明的目的是改进铬化方法，该方法由通过使用于大于30微米深度的钢的方法构成，可用于碳含量至少为0.2％的钢，特别是用于建筑工程的钢和钢 其特征在于三个连续处理的组合，这三个处理中的第一个处理由在100和350微米厚之间的表面层的离子氮化组成，该离子氮化在由氮和氢的混合物构成的气氛中实现 在450℃和650℃之间的温度下进行5-40小时，以便在氮化层中获得1.5％至2.5％的氮，这些处理中的第二种由气态铬化 形成碳化铬的方法，持续5至30小时，并且在850℃至1100℃的温度下实现，这三种处理中的第三种是热处理组合物 在铬化物油中淬火，然后在600℃至650℃的温度下回火，持续30分钟至10小时，这取决于所处理的片的尺寸。

    Hard diffusion formed reaction coatings
    79.
    发明授权
    Hard diffusion formed reaction coatings 失效
    硬扩散成型反应涂料

    公开(公告)号：US3795537A

    公开(公告)日：1974-03-05

    申请号：US19841371

    申请日：1971-11-12

    申请人： THYNE R VAN ,  RAUSCH J

    发明人： VAN THYNE R ,  RAUSCH J

    IPC分类号： C23C10/22 ,  C23C12/00 ,  C23C9/00

    CPC分类号： C23C10/22 ,  C23C12/00

    摘要： A NOVEL PROCESS FOR PRODUCING HARD COATINGS BY DIFFUSING ONE OR MORE REACTIVE ELEMENTS IN MOLTEN LEAD AND REACTING WITH ONE OR MORE HARDENING ELEMENTS OF THE GROUP CARBON, NITROGEN, BORON, AND SILICON PRESENT IN FERROUS PRODUCTS. THE PROCESS OFFERS FLEXIBLITY IN COMPOSITIONAL CONTROL AND COATING PARAMETERS.