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1. 发明授权

US06585812B2 High current density zinc sulfate electrogalvanizing process and composition 失效
公开(公告)号：US06585812B2
公开(公告)日：2003-07-01
申请号：US10080664
申请日：2002-02-25
申请人： Nicholas M. Martyak , John E. McCaskie
发明人： Nicholas M. Martyak , John E. McCaskie
IPC分类号： C25D322
CPC分类号： C25D3/22
摘要： A high current density electrogalvanizing process and composition are disclosed for reducing high current density dendrite formation and controlling high current density roughness, grain size and orientation of a zinc coating obtained from an acidic aqueous zinc salt. The process comprises adding a sulfonated condensation product of naphthalene and formaldehyde to the acidic aqueous zinc salt in an electrolytic cell and applying an electromotive force to the anode and cathode in the cell sufficient to produce a high current density on the cathode. The composition consists essentially of an acidic aqueous zinc salt aqueous in combination with a sulfonated condensation product of naphthalene and formaldehyde which is used as an antidendritic agent.

2. 发明授权

US06652728B1 Cyanide-free aqueous alkaline bath used for the galvanic application of zinc or zinc-alloy coatings 有权
标题翻译：用于电镀锌或锌合金涂层的无氰化钠碱性浴
公开(公告)号：US06652728B1
公开(公告)日：2003-11-25
申请号：US09786242
申请日：2001-06-25
申请人： Birgit Sonntag , Udo Grieser , Barrie Sydney James
发明人： Birgit Sonntag , Udo Grieser , Barrie Sydney James
IPC分类号： C25D322
CPC分类号： C25D3/22 , C25D3/565
摘要： An aqueous alkaline cyanide-free bath for the galvanic deposition of zinc or zinc alloy coatings on substrate surfaces is described, which contains in addition to a source of zinc ions and optionally a source of further metal ions, also hydroxide ions and a polymer of the general formula A that is soluble in the bath as well as optionally conventional additives. The bath may furthermore contain a quaternary derivative of a pyridine-3-carboxylic acid of the formula B and/or a quaternary derivative of a pyridine-3-carboxylic acid of the formula C A process for the galvanic deposition of zinc coatings and zinc alloy coatings using the aforedescribed bath is also described. By using the baths according to the invention it is possible to produce coatings that exhibit a uniform layer thickness combined with a high gloss, and which do not exhibit any tendency to exfoliate.
摘要翻译：描述了用于在基底表面上电镀锌或锌合金涂层的碱性无氰水溶液，其还包含锌离子源和任选的其它金属离子源，还包含氢氧根离子和可溶于浴的通式A以及任选的常规添加剂。该浴还可以含有式B的吡啶-3-羧酸的季衍生物和/或式CA方法的吡啶-3-羧酸的季衍生物，用于电镀锌涂层和锌合金涂层还描述了使用上述浴。通过使用根据本发明的浴，可以生产出具有与高光泽度结合的均匀层厚度并且不表现出任何脱落倾向的涂层。

3. 发明授权

US06365031B1 High current density zinc sulfate electrogalvanizing process and composition 失效
公开(公告)号：US06365031B1
公开(公告)日：2002-04-02
申请号：US09645936
申请日：2000-08-25
申请人： Nicholas M. Martyak , John E. McCaskie
发明人： Nicholas M. Martyak , John E. McCaskie
IPC分类号： C25D322
CPC分类号： C25D3/22
摘要： A high current density electrogalvanizing process and composition are disclosed for reducing high current density dendrite formation and controlling high current density roughness, grain size and orientation of a zinc coating obtained from an acidic aqueous zinc salt. The process comprises adding a sulfonated condensation product of naphthalene and formaldehyde to the acidic aqueous zinc salt in an electrolytic cell and applying an electromotive force to the anode and cathode in the cell sufficient to produce a high current density on the cathode. The composition consists essentially of an acidic aqueous zinc salt aqueous in combination with a sulfonated condensation product of naphthalene and formaldehyde which is used as an antidendritic agent.

4. 发明授权

US06830674B2 Brightener additive and bath for alkaline cyanide-free zinc electroplating 失效
标题翻译：增白剂添加剂和碱性无氰化锌电镀浴
公开(公告)号：US06830674B2
公开(公告)日：2004-12-14
申请号：US10288113
申请日：2002-11-05
申请人： Robert J. Ludwig , William E. Rosenberg
发明人： Robert J. Ludwig , William E. Rosenberg
IPC分类号： C25D322
CPC分类号： C25D3/22
摘要： An aqueous alkaline non-cyanide zinc electroplating bath containing zinc ions for producing bright electrodeposits of zinc and a brightening agent comprising a polymeric quaternary amine and a reducing sugar, and a compound that forms a reducing sugar upon hydrolysis.
摘要翻译：一种含有锌离子的碱性非氰化锌电镀浴，用于生产锌的光亮电沉积物，以及含有聚合季胺和还原糖的增白剂，以及在水解时形成还原糖的化合物。

5. 发明授权

US06677057B2 Zn-Co-W alloy electroplated steel sheet with excellent corrosion resistance and weldability, and electrolyte for plating same 失效
标题翻译：具有优异的耐腐蚀性和焊接性的Zn-Co-W合金电镀钢板和用于电镀的电解质
公开(公告)号：US06677057B2
公开(公告)日：2004-01-13
申请号：US10204512
申请日：2002-08-21
申请人： Myung-Su Kim
发明人： Myung-Su Kim
IPC分类号： C25D322
CPC分类号： C25D3/565 , Y10S428/935 , Y10T428/12799 , Y10T428/1284
摘要： A Zn—Co—W alloy electroplated steel sheet with excellent corrosion resistance and weldability, and an electrolyte for manufacturing same are provided. The plating layer consisting of Co: 0.1-3.0 wt %, and zinc: balance, is formed on the steel sheet and all tungsten plating is carried out with metallic tungsten; an electrolyte for manufacturing a Zn—Co—W alloy electroplated steel sheet, comprising zinc chloride: 60-200 g/l, cobalt chloride: 0.1-6.0 g/l, tungsten: 0.1-4.0 g/l, citric acid: 0.5-10.0 g/l, polyethylene glycol: 0.1-2.0 m/l and electric conductive aid: 30-400 g/l, wherein substantially all of the tungsten ions form a complex compound with citric acid, thereby preventing formation of sludge; and a Zn—Co—W alloy electroplated steel sheet, on which a plating layer is formed by electroplating the steel in the electrolyte.
摘要翻译：提供具有优异的耐腐蚀性和焊接性的Zn-Co-W合金电镀钢板及其制造用电解液。在钢板上形成由Co：0.1-3.0重量％和锌平衡的组成的镀层，并用金属钨进行所有的钨镀层; 一种用于制造Zn-Co-W合金电镀钢板的电解质，包括氯化锌：60-200g / l，氯化钴：0.1-6.0g / l，钨：0.1-4.0g / l，柠檬酸： 10.0g / l，聚乙二醇：0.1-2.0m / l和导电助剂：30-400g / l，其中基本上所有的钨离子与柠檬酸形成络合物，从而防止污泥的形成; 和Zn-Co-W合金电镀钢板，通过在电解液中电镀钢而形成镀层。

6. 发明授权

US06238542B1 Water soluble brighteners for zinc and zinc alloy electrolytes 有权
标题翻译：锌和锌合金电解质的水溶性增白剂
公开(公告)号：US06238542B1
公开(公告)日：2001-05-29
申请号：US09394839
申请日：1999-09-13
申请人： Thomas Helden
发明人： Thomas Helden
IPC分类号： C25D322
CPC分类号： C25D3/565 , C25D3/22
摘要： A process for the galvanic precipitation of zinc deposits and/or zinc alloy deposits on a metallic surface, working with an aqueous acid electrolyte which contains at least one zinc salt as well as at least one high-gloss agent. At least one heterocyclic aromatic compound is added to the electrolyte, with at least one alkylated nitrogen atom as the heteroatom.
摘要翻译：一种用于在金属表面上沉积锌沉积物和/或锌合金沉积物的工艺，其与含有至少一种锌盐的水性酸性电解质以及至少一种高光泽剂一起工作。将至少一种杂环芳族化合物加入到电解质中，其中至少一个烷基化氮原子作为杂原子。

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