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1.发明申请CORROSION RESISTANCE OF THE CAST Mg ALLOYS BY NOVEL MICROSTRUCTURAL PHASE MODIFICATIONS 审中-公开通过新型微结构相变修复镁合金的耐腐蚀性公开(公告)号：US20110030855A1
公开(公告)日：2011-02-10
申请号：US12537297
申请日：2009-08-07
摘要： A method of improving the corrosion resistance of magnesium alloy castings containing more than about 2 per cent by weight of aluminum is described. The method comprises: first selecting a casting process suitable for developing at least on the surface of the casting a microstructure comprising aluminum-depleted magnesium grains surrounded by an aluminum-rich layer and preferably incorporating at least some of an intermetallic compound based on the composition Mg17Al12; and second, heat treating at least the outer layer of the casting to promote additional intermetallic compound precipitation as required.
摘要翻译： 描述了一种提高镁合金铸件的耐腐蚀性的方法，该铸造件含有超过约2重量％的铝。 该方法包括：首先选择适合于至少在铸件表面上显影的铸造工艺，该显微组织包含由富铝层包围的贫铝镁颗粒，并且优选地基于组合物Mg17Al12掺入至少一些金属间化合物 ; 其次，至少对铸件的外层进行热处理，以根据需要促进附加的金属间化合物沉淀。
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公开(公告)号：US20080096036A1
公开(公告)日：2008-04-24
申请号：US11550817
申请日：2006-10-19
IPC分类号： B22F3/00
CPC分类号： B05D5/00 , B05D5/12 , B05D7/14 , B05D2202/20 , B05D2601/20 , Y10T428/12 , Y10T428/12014 , Y10T428/25 , Y10T428/258 , Y10T428/31678
摘要： The surface of a magnesium or magnesium alloy part is protected from corrosion by a coating of adherent, electrically conductive material that is electrolytically anodic to the magnesium-containing substrate. For example, the magnesium alloy has a microstructure with portions that are anodic and cathodic to each other, but the coating contains species (e.g., lithiated graphite particles in a polymeric binder) that are anodic to all phases in the magnesium alloy microstructure so that when the coating is damaged and the part surface is exposed, the coating is sacrificially consumed by electrochemical corrosion and the part is spared.
摘要翻译： 镁或镁合金部件的表面通过对含镁基底进行电解阳极的粘附导电材料的涂层来防止腐蚀。 例如，镁合金具有彼此具有阳极和阴极的部分的微结构，但涂层含有在镁合金微观结构中对所有相阳极的物质（例如，聚合物粘合剂中的锂化石墨颗粒），因此当 涂层受损，部件表面露出，涂层被电化学腐蚀牺牲消耗，部件免于损坏。
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公开(公告)号：US07713618B2
公开(公告)日：2010-05-11
申请号：US11550817
申请日：2006-10-19
IPC分类号： B32B15/08
CPC分类号： B05D5/00 , B05D5/12 , B05D7/14 , B05D2202/20 , B05D2601/20 , Y10T428/12 , Y10T428/12014 , Y10T428/25 , Y10T428/258 , Y10T428/31678
摘要： The surface of a magnesium or magnesium alloy part is protected from corrosion by a coating of adherent, electrically conductive material that is electrolytically anodic to the magnesium-containing substrate. For example, the magnesium alloy has a microstructure with portions that are anodic and cathodic to each other, but the coating contains species (e.g., lithiated graphite particles in a polymeric binder) that are anodic to all phases in the magnesium alloy microstructure so that when the coating is damaged and the part surface is exposed, the coating is sacrificially consumed by electrochemical corrosion and the part is spared.
摘要翻译： 镁或镁合金部件的表面通过对含镁基底进行电解阳极的粘附导电材料的涂层来防止腐蚀。 例如，镁合金具有彼此具有阳极和阴极的部分的微结构，但涂层含有在镁合金微观结构中对所有相阳极的物质（例如，聚合物粘合剂中的锂化石墨颗粒），因此当 涂层受损，部件表面露出，涂层被电化学腐蚀牺牲消耗，部件免于损坏。
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公开(公告)号：US20090071620A1
公开(公告)日：2009-03-19
申请号：US11855260
申请日：2007-09-14
IPC分类号： B22D46/00
CPC分类号： B22D17/2218 , B22D17/32 , B22D46/00
摘要： Die casting of some magnesium alloys may yield castings that are susceptible to corrosion when exposed to salt water or other aggressive oxidizing environments. Such corrosion may result from the existence of different microstructures in a cross-section of the die casting (e.g. between the surface of the part and the center) that produce galvanic couples that are susceptible to such corrosive attack. However, a die temperature may be determined for casting of the part such that a more uniform cross-sectional microstructure is produced in which minimal or negligible galvanic potentials are produced.
摘要翻译： 一些镁合金的压铸可能产生暴露于盐水或其他侵蚀性氧化环境时容易腐蚀的铸件。 这种腐蚀可能是由于在压铸件的横截面（例如，部件的表面和中心之间）存在不同的微结构，其产生易受这种腐蚀性攻击的电偶。 然而，可以确定模具温度以铸造零件，使得产生更均匀的横截面微结构，其中产生最小或可忽略的电偶电位。
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