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    METHOD FOR PREPARING STAINLESS REINFORCING STEEL BAR RESISTANT TO CORROSION OF CHLORIDE IONS
    12.
    发明申请
    METHOD FOR PREPARING STAINLESS REINFORCING STEEL BAR RESISTANT TO CORROSION OF CHLORIDE IONS 审中-公开
    制备不锈钢耐钢氯化物腐蚀的方法

    公开(公告)号：US20170058391A1

    公开(公告)日：2017-03-02

    申请号：US15070287

    申请日：2016-03-15

    申请人： University of Science and Technology Beijing

    发明人： Xiaogang LI ,  Xuequn CHENG ,  Chaofang DONG ,  Cuiwei DU ,  Dawei ZHANG

    IPC分类号： C23C10/40 ,  C22C38/02 ,  C22C38/20 ,  C22C38/04 ,  C22C38/28 ,  C22C38/22

    CPC分类号： C23C10/40 ,  C22C38/02 ,  C22C38/04 ,  C22C38/20 ,  C22C38/22 ,  C22C38/28 ,  C23C10/60

    摘要： This present invention provides a method for preparing a stainless reinforcing steel bar resistant to corrosion of chloride ions, and belongs to the technical field of corrosion-resistant materials. This method particularly comprises the steps of: selecting a reinforcing steel bar blank, and performing oil removing, rust removing, water washing, and drying treatments on the surface of the reinforcing steel bar blank to be treated, or directly performing sand blasting or shot blasting on a reinforcing steel bar blank whose surface is only slightly rusted; placing the reinforcing steel bar blank in a chromium-containing environment, and keeping at a certain temperature for a certain time such that chromium in the environment is capable of diffusing into the surface of the reinforcing steel bar blank to form a chromium-containing diffusion layer, wherein an area in the diffusion layer where the weight content of Cr exceeds 12% meets the basic component requirements for a stainless steel, and this area is the effective diffusion layer described in this invention; and performing cooling treatment on the heat diffusion treated reinforcing steel bar. In this invention, a reinforcing steel bar blank is pre-formed, a heat diffusion technique is optimized, and the corrosion resistance to chloride ions of the stainless reinforcing steel bar of this invention is superior to that of the 316L stainless reinforcing steel bar.

    摘要翻译： 本发明提供一种耐氯离子腐蚀的不锈钢钢筋的制备方法，属于耐腐蚀材料的技术领域。 该方法特别包括以下步骤：选择加强钢筋坯料，并在待处理的钢筋坯料的表面进行除油除锈，水洗和干燥处理，或直接进行喷砂或喷丸处理 在表面仅生锈的钢筋坯料上; 将加强钢筋坯料放置在含铬环境中，并在一定温度下保持一定时间，使得环境中的铬能够扩散到钢筋坯料的表面，形成含铬扩散层 其中，Cr的重量含量超过12％的扩散层的面积满足不锈钢的基本成分要求，该面积是本发明中描述的有效扩散层; 对热扩散处理的钢筋进行冷却处理。 在本发明中，预先形成钢筋坯料，优化热扩散技术，本发明的不锈钢钢筋对氯离子的耐腐蚀性优于316L不锈钢钢筋。

    Composition and method for diffusion alloying of ferrocarbon workpiece
    13.
    发明授权
    Composition and method for diffusion alloying of ferrocarbon workpiece 有权
    碳化钨工件扩散合金化的组成和方法

    公开(公告)号：US09080235B2

    公开(公告)日：2015-07-14

    申请号：US13448445

    申请日：2012-04-17

    申请人： Lidiya Omovna Chunyayeva ,  Oleg Nikolayevich Chunyayev ,  Leonid Leonidovich Tovazhnyanskyy

    发明人： Lidiya Omovna Chunyayeva ,  Oleg Nikolayevich Chunyayev ,  Leonid Leonidovich Tovazhnyanskyy

    IPC分类号： C23C10/32 ,  C23C10/38 ,  C23C10/40 ,  C23C10/60 ,  C23C30/00

    CPC分类号： C23C10/32 ,  C23C10/38 ,  C23C10/40 ,  C23C10/60 ,  C23C30/00

    摘要： A composition for diffusion surface alloying of ferrocarbon alloys with chromium, consisting essentially of, by weight, about 25%-40% ferrochromium; about 54%-74% aluminum oxide or mixtures of aluminum oxide, silicon oxide and magnesium oxide in a weight ratio of about 3:2:1; about 1%-3% ammonium chloride; and a reducing agent consisting essentially of about 0.1%-3% aluminum, about 0.1%-2% silicon, about 0.1%-1.5% magnesium, or about 0.1%-3% of a mixture of aluminum, silicon and magnesium in a weight ratio of about 3:2:1. A method for diffusion surface alloying of a ferrocarbon workpiece with chromium, comprising providing the above composition; exposing the workpiece to the composition; and heating the workpiece and composition for sufficient time and temperature to form a chromium containing diffusion layer on the surface of the workpiece.

    摘要翻译： 用于钼铁合金与铬的扩散表面合金化的组合物，基本上由重量计约25％〜40％的铬铁合金组成; 约54％-74％的氧化铝或氧化铝，氧化硅和氧化镁的混合物，其重量比为约3：2：1; 约1％-3％氯化铵; 和基本上由重量的铝，硅和镁的混合物组成的约0.1％-3％铝，约0.1％-2％硅，约0.1％-1.5％镁或约0.1％-3％的还原剂 比例约为3：2：1。 一种碳化钨工件与铬的扩散表面合金化的方法，包括提供上述组成; 将工件暴露于组合物; 并加热工件和组合物足够的时间和温度以在工件的表面上形成含铬扩散层。

    Diffusion treated articles
    18.
    发明授权
    Diffusion treated articles 失效
    扩散处理制品

    公开(公告)号：US4290391A

    公开(公告)日：1981-09-22

    申请号：US98654

    申请日：1979-11-29

    申请人： Alfonso L. Baldi

    发明人： Alfonso L. Baldi

    IPC分类号： C23C10/02 ,  C23C10/04 ,  C23C10/38 ,  C23C10/40 ,  C23C10/42 ,  C23C10/50 ,  C23C10/56 ,  C23C10/60 ,  C23C12/02 ,  C23C9/02 ,  B32B1/08

    CPC分类号： C23C10/42 ,  C23C10/02 ,  C23C10/04 ,  C23C10/38 ,  C23C10/40 ,  C23C10/50 ,  C23C10/56 ,  C23C10/60 ,  C23C12/02 ,  F05B2250/62 ,  H05K2201/0209 ,  Y10S122/13 ,  Y10T428/12757 ,  Y10T428/12854

    摘要： Chromized nickel- and cobalt-based superalloys have alphachrome phase formed during chromizing, and the amount of that phase is diminished by one or more treatments with alkali-permanganate solution and intervening removal of permanganate reaction product film as by acid dip. A kit of such solutions can be prepared. Low-alloy steel steam boiler tubing can have chromized interior and aluminized exterior, and long lengths chromized without a perfectly sealed retort around it can have end caps fitted with extra pack to reduce oxygen penetration to interior. Chain saw cutter blades can be chromized and carburized. Stripping of aluminized coatings from super-alloys with fluoride-containing nitric acid solution is improved by follow-up treatment with fluoride-free nitric acid solution. Smut that forms on ferrous surface during cleaning is chemically removed by first depositing a nickel flash plating on smut-containing surface, and then dissolving the nickel plating by treatment with aqueous nitric acid containing a little halide ion.

    摘要翻译： 镀镍和钴基超级合金在铬化过程中形成了铝合金相，并且通过用碱金属高锰酸盐溶液进行一次或多次处理并且通过酸浸进行介入去除高锰酸盐反应产物膜而减少该相的量。 可以制备一套这样的解决方案。 低合金钢蒸汽锅炉管道可以镀铬内部和镀铝外部，并且长时间镀铬，而没有完全密封的蒸馏罐可以使用端盖安装额外的包装，以减少氧气渗透到内部。 链锯切割刀片可以镀铬和渗碳。 通过用无氟化物硝酸溶液进行后续处理，提高了含氟化合物硝酸溶液从超合金中剥离镀铝涂层。 在清洗过程中，在黑色金属表面形成的污点，通过首先在含黑渣的表面上沉积镍闪电镀，然后通过用含有少量卤化物的硝酸水溶液处理来溶解镀镍，进行化学除去。

    Modified diffusion coating of the interior of a steam boiler tube
    19.
    发明授权
    Modified diffusion coating of the interior of a steam boiler tube 失效
    蒸汽锅炉管内部的改性扩散涂层

    公开(公告)号：US4208453A

    公开(公告)日：1980-06-17

    申请号：US752855

    申请日：1976-12-21

    申请人： Alfonso L. Baldi

    发明人： Alfonso L. Baldi

    IPC分类号： C23C10/02 ,  C23C10/04 ,  C23C10/38 ,  C23C10/40 ,  C23C10/42 ,  C23C10/50 ,  C23C10/56 ,  C23C10/60 ,  C23C12/02 ,  C23C11/04

    CPC分类号： C23C10/04 ,  C23C10/02 ,  C23C10/38 ,  C23C10/40 ,  C23C10/42 ,  C23C10/50 ,  C23C10/56 ,  C23C10/60 ,  C23C12/02 ,  F05B2250/62 ,  Y10S376/90 ,  Y10T428/12611

    摘要： Diffusion coatings can be masked from portions of a workpiece by combination of layers, the outer one of which forms coherent strong shell that holds inner layer or layers in place. All ingredients of these layers can be materials such as nickel, nickel aluminide, chromium, chromic oxide (Cr.sub.2 O.sub.3) and inert diluent that do not contaminate superalloys or even low alloy or plain carbon steels. Such a holding shell can also be used to retain on a workpiece surface a layer that causes formation of a diffusion coating. Low alloy steel conduit can be internally chromized and/or externally chromized or aluminized to make it more desirable for use as high pressure steam boiler heat exchange tubing. Nickel articles aluminized with deep Ni.sub.2 Al.sub.3 layer that has outer skin more heavily aluminized can have aluminum correspondingly leached out from outer skin only.

    摘要翻译： 扩散涂层可以通过层的组合从工件的部分掩蔽，其外部的一部分形成将内层或多层保持在适当位置的相干强的外壳。 这些层的所有成分可以是不会污染超合金或甚至低合金或普通碳钢的材料，例如镍，镍铝，铬，氧化铬（Cr 2 O 3）和惰性稀释剂。 这种保持壳也可用于在工件表面上保持形成扩散涂层的层。 低合金钢管可以内部镀铬和/或外部镀铬或镀铝，使其更适合用作高压蒸汽锅炉换热管。 镀镍深层Ni2Al3层的镀镍物品，其外皮更加镀铝，可以使铝从外皮中相应地淋出。

    Coating for corrosion resistance
    20.
    发明授权
    Coating for corrosion resistance 失效
    涂层耐腐蚀

    公开(公告)号：US3958046A

    公开(公告)日：1976-05-18

    申请号：US446473

    申请日：1974-02-27

    申请人： Alfonso L. Baldi

    发明人： Alfonso L. Baldi

    IPC分类号： C23C10/02 ,  C23C10/04 ,  C23C10/38 ,  C23C10/40 ,  C23C10/50 ,  C23C10/60 ,  C23C11/02

    CPC分类号： C23C10/38 ,  C23C10/02 ,  C23C10/04 ,  C23C10/40 ,  C23C10/50 ,  C23C10/60 ,  F05B2250/62

    摘要： Aluminum coatings to reduce corrosion of steels and the like, are very effective when applied by pack diffusion below 1000.degree.F using a retort cup not over fifteen inches high, with anhydrous or hydrated energizer in a layer on top of the pack and out of contact with the workpieces. Such diffusion coatings are more uniform than corresponding coatings made with the pack energizer in a set of porous containers imbedded in the pack, even when using a retort not over 15 inches high and the porous containers are grouped together separately from all the workpieces. Keeping workpieces away from above and below the porous containers helps. Aluminum diffusion can also be effected from continuous coatings of leafing-type aluminum particles and such leafing coatings in very thin layers are more effective than coatings of non-leafing aluminum, with or without diffusion. The leafing aluminum coatings can be sprayed on from aqueous dispersion containing wetting agents and if desired a polyethylene glycol to help disperse the aluminum, as well as mixtures of phosphoric acid, chromic acid and magnesium, aluminum, calcium or zinc salts of these acids. A protective second coating of such mixtures can be applied as a cover layer over the layer containing the leafing aluminum, and this combination works best on a ferrous metal that has an aluminum diffusion coating, particularly a ferrous metal that contains less than 1% chromium and has such an aluminum diffusion coating. It also works very well on aluminum diffusion coatings from packs containing chromium, or chromium and silicon, in addition to the aluminum, and these alloys can be made by magnesothermic reduction of their mixed oxides or the like.

    摘要翻译： 用于减少钢等的腐蚀的铝涂层在使用不超过15英寸高的蒸馏杯的低于1000°F的包装扩散施加时，在包装顶部的层中具有无水或水合的活化剂并且不接触 与工件。 即使使用不超过15英寸高的蒸馏器，并且多孔容器与所有工件分开组合，这种扩散涂层比在嵌入在包装中的一组多孔容器中用包装增氧剂制成的相应涂层更均匀。 保持工件远离多孔容器上方和下方有助于。 铝扩散也可以由叶型铝颗粒的连续涂层实现，并且非常薄的这种叶片涂层比具有或不具有扩散的非漂浮铝的涂层更有效。 可以从含有润湿剂的水性分散体和如果需要的话，将聚乙二醇分散在铝中，以及这些酸的磷酸，铬酸和镁，铝，钙或锌盐的混合物，从而将铝箔涂层喷涂。 这种混合物的保护性第二涂层可以作为覆盖层施加在含有漂浮铝的层上，并且这种组合对具有铝扩散涂层的黑色金属，特别是含有少于1％的铬的黑色金属，以及 具有这样的铝扩散涂层。 除了铝之外，它还可以非常好地用于含有铬或铬和硅的包装的铝扩散涂层，并且这些合金可以通过其混合氧化物等的镁热还原来制备。