Activated nickel screens and foils
    11.
    发明授权
    Activated nickel screens and foils 有权
    活性镍屏和箔

    公开(公告)号:US06491766B1

    公开(公告)日:2002-12-10

    申请号:US09692030

    申请日:2000-10-19

    IPC分类号: C23C2200

    摘要: A coating composition and process have been developed to provide an activated coating on nickel screen for use as cathodes in electrolytic cells for the generation of hydrogen and oxygen. Compared to the earlier Classical Pack Cementation process, the disclosed process is less expensive, reduces processing time from 20 hours to a few minutes, eliminates dusts and toxic gases, and provides improved performance in cells for hydrogen and oxygen generation. The coating is characterized by the presence of two activated layers with a high surface area, a multitude of fissures and a nickel to aluminum weight ratio greater than 20/1 in the top layer and greater than 4/1 in the bottom layer adjacent to the nickel substrate.

    摘要翻译: 已经开发了涂料组合物和方法,以在镍屏幕上提供活化涂层,用作用于产生氢气和氧气的电解池中的阴极。 与早期的古典水泥包装工艺相比,所公开的方法较便宜,可缩短20小时至几分钟的处理时间,消除灰尘和有毒气体,并为氢气和氧气的生成提供更好的性能。 涂层的特征在于在顶层中存在两个具有高表面积,大量裂缝和大大于20/1的镍与铝重量比的活化层,并且在底层附近大于4/1 镍基板。

    Activated nickel screens and foils
    12.
    发明授权
    Activated nickel screens and foils 有权
    活性镍屏和箔

    公开(公告)号:US06258461B1

    公开(公告)日:2001-07-10

    申请号:US09267860

    申请日:1999-03-12

    IPC分类号: B32B1504

    摘要: A coating composition and process have been developed to provide an activated coating on nickel screen for use as cathodes in electrolytic cells for the generation of hydrogen and oxygen. Compared to the earlier Classical Pack Cementation process, the disclosed process is less expensive, reduces processing time from 20 hours to a few minutes, eliminates dusts and toxic gases, and provides improved performance in cells for hydrogen and oxygen generation. The coating is characterized by the presence of two activated layers with a high surface area, a multitude of fissures and a nickel to aluminum weight ratio greater than 20/1 in the top layer and greater than 4/1 in the bottom layer adjacent to the nickel substrate.

    摘要翻译: 已经开发了涂料组合物和方法,以在镍屏幕上提供活化涂层,用作用于产生氢气和氧气的电解池中的阴极。 与早期的古典水泥包装工艺相比,所公开的方法较便宜,可缩短20小时至几分钟的处理时间,消除灰尘和有毒气体,并为氢气和氧气的生成提供更好的性能。 涂层的特征在于在顶层中存在两个具有高表面积,大量裂缝和大大于20/1的镍与铝重量比的活化层,并且在底层附近大于4/1 镍基板。

    Metal diffusion and after-treatment
    14.
    发明授权
    Metal diffusion and after-treatment 失效
    金属扩散和后处理

    公开(公告)号:US5128179A

    公开(公告)日:1992-07-07

    申请号:US905247

    申请日:1986-09-08

    申请人: Alfonso L. Baldi

    发明人: Alfonso L. Baldi

    摘要: A nickel-base superalloy is subjected to a diffusion chromizing that supplies a chromized diffusion case, the outer surface of which contains excess alphachrome phase, and then contacting the diffusion case with an aqueous solution of alkali metal permanganate and alkali metal hydroxide until the desired amount of alphachrome phase is eliminated.

    摘要翻译: 对镍基超级合金进行扩散镀铬处理,该扩散镀铬提供铬化扩散壳体,其外表面含有过量的铝合金相,然后使扩散箱与碱金属高锰酸盐和碱金属氢氧化物的水溶液接触直到所需量 消除了阿尔法相。

    Metal treatment
    16.
    发明授权
    Metal treatment 失效
    金属处理

    公开(公告)号:US4957421A

    公开(公告)日:1990-09-18

    申请号:US335240

    申请日:1989-04-10

    申请人: Alfonso L. Baldi

    发明人: Alfonso L. Baldi

    摘要: Titanium and titanium alloy surfaces can be diffusion coated, and portions of the surface protected against such coating by localized powdered masking layer of about 43% titanium, aluminum in an amount equal to the aluminum content of the surface masked, as well as other metals in an amount about one-fifth of their content in the surface masked. Diffusion coating can be speeded by high heat input. Diffusion coating packs can be made with chemically reduced metal content of sludges. Diffusion aliminizing followed by caustic leaching to remove much of the diffused-in aluminum, yields catalytically and pyrophorically active porous surface that also accepts top coatings. Mixtures of aluminum powder with nickel and/or iron powders react when heated to form Raney-like product that can be leached to become pyrophoric, and when held on a metal foil or gauze web will adhere to the web so that leached product can be used as pyrophoric foil for decoying heat-seeking missiles. Such adhesion is improved by addition of small amount of copper.

    摘要翻译: 钛和钛合金表面可以扩散涂覆,并且部分表面通过约43%钛,铝的局部粉末掩蔽层防止这种涂覆,其量等于被掩蔽的表面的铝含量,以及其它金属 其面积约占其内容的五分之一。 扩散涂层可以通过高热量输入加速。 扩散涂层可以用化学还原的污泥的金属含量制成。 扩散混合,然后苛性浸出以除去大部分扩散的铝,产生催化和自发活性的多孔表面,也可以接受顶部涂层。 铝粉与镍和/或铁粉的混合物在加热时反应形成可浸出而变为发火的阮内型产品,当保持在金属箔或纱布网上时,其粘附到网上,以便可以使用浸出的产品 作为用于诱捕寻热导弹的自燃箔。 通过加入少量的铜来改善这种附着力。

    Pyrophoric composition
    17.
    发明授权
    Pyrophoric composition 失效
    发火组成

    公开(公告)号:US4880483A

    公开(公告)日:1989-11-14

    申请号:US96368

    申请日:1987-09-11

    申请人: Alfonso L. Baldi

    发明人: Alfonso L. Baldi

    摘要: Very good masking of pack diffusion aluminizing or chromizing on any metal to keep portions from being diffusion coated is effected by localized coating of masking powder, the metal portion of which can have some composition as substrates. Chromizing can be performed before aluminizing for greater effects. Aluminizing of metals like iron and nickel followed by leaching out much of the diffused-in aluminum gives these substrates a pyrophoric and catalytic surface. Foil, wire or powder can be thus activated; very fine activated powder when discharged into the air forms a warm cloud that settles very slowly and decoys heat-seeking missiles.

    摘要翻译: 任何金属上的包装扩散镀铝或镀铬的非常好的掩蔽是通过掩蔽粉末的局部涂覆实现的,其中金属部分可以具有一些组成作为基底。 在镀铝之前可进行镀铬处理以获得更大的效果。 金属如铁和镍的镀铝,然后浸出大部分扩散的铝,使这些基材成为自燃和催化表面。 箔,线或粉末可以被激活; 非常细的活化粉末在排入空气时形成温暖的云彩,沉降非常缓慢,并且可以诱发寻热导弹。

    Diffusion coating and products therefrom
    19.
    发明授权
    Diffusion coating and products therefrom 失效
    扩散涂层及其产品

    公开(公告)号:US4350719A

    公开(公告)日:1982-09-21

    申请号:US238500

    申请日:1981-02-26

    申请人: Alfonso L. Baldi

    发明人: Alfonso L. Baldi

    摘要: Ferrous metal or titanium or aluminum is coated with a mixture of phosphoric acid, chromic acid and magnesium salts of these acids, as well as with aluminum flakes, or coated with a mixture of aluminum flakes and magnesium chromate or dichromate, to provide after baking excellent resistance to attack. Aluminum-silicon alloys containing about 10 to about 15 weight percent silicon give better results than ordinary aluminum, particularly when the aluminum is in powder form; and when coated products are given a burnishing treatment. Very good masking for pack diffusion aluminizing or chromizing on any metal to keep portions from being diffusion coated is effected by localized coating, the lowest layer of which is depletion-reducing. The upper coating layer can be of non-contaminating particles like nickel or Cr.sub.2 O.sub.3 that upon aluminizing or chromizing become coherently held together to form a secure sheath. Such sheath can also be used for holding localized diffusion-coating layer in place. Low-alloy steels are made resistant to hot sulfidation by first decarburizing then chromizing then aluminizing, either in independent operations or run together in a single retort.

    摘要翻译: 黑色金属或钛或铝用这些酸的磷酸,铬酸和镁盐的混合物以及铝薄片包覆,或用铝薄片和铬酸镁或重铬酸盐的混合物涂覆,以提供烘烤后的极好的 抵抗攻击 含有约10至约15重量%硅的铝 - 硅合金比普通铝具有更好的结果,特别是当铝是粉末形式时; 并且当涂覆产品被抛光处理时。 对于任何金属进行包装扩散镀铝或镀铬以保持部分不被扩散涂覆的非常好的掩蔽是通过局部涂层实现的,其最底层是耗尽减少。 上涂层可以是非污染颗粒,如镍或Cr2O3,在镀铝或镀铬时变得相干地保持在一起以形成牢固的护套。 这种护套也可用于将局部扩散涂层保持在适当位置。 低合金钢通过首先进行脱硫,然后进行镀铬,然后进行镀铝处理,在独立操作中或在单个蒸馏器中一起运行,使其耐热硫化。

    Diffusion treated articles
    20.
    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

    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。