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1. 发明授权

US5240589A Two-step chemical/electrochemical process for coating magnesium alloys 失效
标题翻译：镁合金涂层的两步化学/电化学工艺
公开(公告)号：US5240589A
公开(公告)日：1993-08-31
申请号：US918946
申请日：1992-07-22
申请人： Duane E. Bartak , Brian E. Lemieux , Earl R. Woolsey
发明人： Duane E. Bartak , Brian E. Lemieux , Earl R. Woolsey
IPC分类号： C25D11/30
CPC分类号： C25D11/30
摘要： A two-step process for the coating of magnesium and its alloys is disclosed. The first step comprises immersing the magnesium workpiece in an aqueous solution comprising about 0.2 to 5 molar ammonium fluoride having a pH of about 5 to 8 and a temperature of about 40.degree. to 100.degree. C. The second step is an electrochemical treatment of the pretreated article in an aqueous electrolytic solution having a pH of at least about 12.5 and which solution comprises about 2 to 12 g/L of a aqueous soluble hydroxide, about 2 to 15 g/L of a fluoride-containing composition selected from the group consisting of fluorides and fluorosilicates, and about 5 to 30 g/L of a silicate. This process results in a superior coating which has increased abrasion and corrosion resistance.
摘要翻译：公开了一种用于涂覆镁及其合金的两步法。第一步包括将镁工件浸入包含约0.2至5摩尔氟化铵的水溶液中，pH约为5-8，温度约为40至100℃。第二步是将预处理过的在pH为至少约12.5的电解水溶液中制备该溶液，该溶液包含约2至12g / L水溶性氢氧化物，约2至15g / L的含氟化合物组合物，其选自氟化物和氟硅酸盐，以及约5至30g / L的硅酸盐。该方法产生了优异的涂层，其具有增加的耐磨性和耐腐蚀性。

2. 发明授权

US5264113A Two-step electrochemical process for coating magnesium alloys 失效
标题翻译：镁合金涂层两步电化学工艺
公开(公告)号：US5264113A
公开(公告)日：1993-11-23
申请号：US729612
申请日：1991-07-15
申请人： Duane E. Bartak , Brian E. Lemieux , Earl R. Woolsey
发明人： Duane E. Bartak , Brian E. Lemieux , Earl R. Woolsey
IPC分类号： C25D11/30
CPC分类号： C25D11/30
摘要： A two-step process for the coating of magnesium and its alloys is disclosed. The first step comprises immersing the magnesium workpiece in a first electrochemical solution comprising about 3 to 10 wt-% of a hydroxide and about 5 to 30 wt-% of a fluoride having a pH of at least about 12. By controlling a current density to about 10 to 200 mA/cm.sup.2, an increasing voltage differential is established between an anode comprising the pretreated article and a cathode also in contact with the electrolytic solution. Next, the article is immersed in an aqueous electrolytic solution having a pH of at least about 11 and which solution is prepared from components comprising a water soluble hydroxide, a water soluble fluoride source and a water soluble silicate in amounts to result in an addition of about 2 to 15 g of a hydroxide per liter of solution, about 2 to 14 g of a fluoride per liter of solution and about 5 to 40 g of a silicate per liter of solution. Again, by controlling the current density to about 5 to 100 mA/cm.sup.2, an increasing voltage differential of at least about 150 volts is established between an anode comprising the pretreated article and a cathode also in contact with the electrolytic solution. This process results in a superior coating which has increased abrasion and corrosion resistance.
摘要翻译：公开了一种用于涂覆镁及其合金的两步法。第一步包括将镁工件浸入第一电化学溶液中，所述第一电化学溶液包含约3至10重量％的氢氧化物和约5至30重量％的pH至少约为12的氟化物。通过将电流密度控制为约10至200mA / cm 2时，在包含预处理制品的阳极和也与电解液接触的阴极之间建立了增加的电压差。接下来，将制品浸入pH至少为约11的水性电解液中，并且该溶液由包含水溶性氢氧化物，水溶性氟化物源和水溶性硅酸盐的组分制备，其用量导致添加量每升溶液约2至15g氢氧化物，每升溶液约2至14g氟化物，每升溶液约5至40g硅酸盐。再次，通过将电流密度控制在约5至100mA / cm 2，在包含预处理制品的阳极和也与电解液接触的阴极之间建立至少约150伏特的增加的电压差。该方法产生了优异的涂层，其具有增加的耐磨性和耐腐蚀性。

3. 发明授权

US5470664A Hard anodic coating for magnesium alloys 失效
标题翻译：镁合金硬阳极涂层
公开(公告)号：US5470664A
公开(公告)日：1995-11-28
申请号：US271052
申请日：1994-07-06
申请人： Duane E. Bartak , Brian E. Lemieux , Earl R. Woolsey
发明人： Duane E. Bartak , Brian E. Lemieux , Earl R. Woolsey
IPC分类号： C25D11/30 , B32B15/04
CPC分类号： C25D11/30
摘要： A two-step process for the coating of magnesium and its alloys is disclosed. The first step comprises immersing the magnesium workpiece in an aqueous solution comprising about 0.2 to 5 molar ammonium fluoride having a pH of about 5 to 8 and a temperature of about 40.degree. to 100.degree. C. The second step is an electrochemical treatment of the pretreated article in an aqueous electrolytic solution having a pH of at least about 12.5 and which solution comprises about 2 to 12 g/L of a aqueous soluble hydroxide, about 2 to 15 g/L of a fluoride-containing composition selected from the group consisting of fluorides and fluorosilicates, and about 5 to 30 g/L of a silicate. This process results in a superior coating which has increased abrasion and corrosion resistance.
摘要翻译：公开了一种用于涂覆镁及其合金的两步法。第一步包括将镁工件浸入包含约0.2至5摩尔氟化铵的水溶液中，pH约为5-8，温度约为40至100℃。第二步是将预处理过的在pH为至少约12.5的电解水溶液中制备该溶液，该溶液包含约2至12g / L水溶性氢氧化物，约2至15g / L的含氟化合物组合物，其选自氟化物和氟硅酸盐，以及约5至30g / L的硅酸盐。该方法产生了优异的涂层，其具有增加的耐磨性和耐腐蚀性。

4. 发明授权

US5266412A Coated magnesium alloys 失效
标题翻译：涂层镁合金
公开(公告)号：US5266412A
公开(公告)日：1993-11-30
申请号：US943325
申请日：1992-09-10
申请人： Duane E. Bartak , Brian E. Lemieux , Earl R. Woolsey
发明人： Duane E. Bartak , Brian E. Lemieux , Earl R. Woolsey
IPC分类号： C25D11/30 , C25D20060101 , B32B9/00
CPC分类号： C25D11/30
摘要： A two-step process for the coating of magnesium and its alloys is disclosed. The first step comprises immersing the magnesium workpiece in a first electrochemical solution comprising about 3 to 10 wt-% of a hydroxide and about 5 to 30 wt-% of a fluoride having a pH of at least about 12. By controlling a current density to about 10 to 200 mA/cm.sup.2, an increasing voltage differential is established between an anode comprising the pretreated article and a cathode also in contact with the electrolytic solution. Next, the article is immersed in an aqueous electrolytic solution having a pH of at least about 11 and which solution is prepared from components comprising a water soluble hydroxide, a fluoride source and a water soluble silicate in amounts to result in an addition of about 2 to 15 g of a hydroxide per liter of solution, about 2 to 14 g of a fluoride per liter of solution and about 5 to 40 g of a silicate per liter of solution. Again, by controlling the current density to about 5 to 100 mA/cm.sup.2, an increasing voltage differential of at least about 150 volts is established between an anode comprising the pretreated article and a cathode also in contact with the electrolytic solution. This process results in a superior coating which has increased abrasion and corrosion resistance.
摘要翻译：公开了一种用于涂覆镁及其合金的两步法。第一步包括将镁工件浸入第一电化学溶液中，所述第一电化学溶液包含约3至10重量％的氢氧化物和约5至30重量％的pH至少约为12的氟化物。通过将电流密度控制为约10至200mA / cm 2时，在包含预处理制品的阳极和也与电解液接触的阴极之间建立了增加的电压差。接下来，将制品浸入pH至少约为11的电解水溶液中，并且该溶液由包含水溶性氢氧化物，氟化物源和水溶性硅酸盐的组分制备，其量可导致加入约2 至每升溶液15g氢氧化物，每升溶液约2至14g氟化物和每升溶液约5至40g硅酸盐。再次，通过将电流密度控制在约5至100mA / cm 2，在包含预处理制品的阳极和也与电解液接触的阴极之间建立至少约150伏特的增加的电压差。该方法产生了优异的涂层，其具有增加的耐磨性和耐腐蚀性。

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