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    • 16. 发明授权
    • Magnesium alloy structural member
    • 镁合金结构件
    • US09103010B2
    • 2015-08-11
    • US13515155
    • 2010-12-06
    • Osamu MizunoNobuyuki OkudaKoji MoriMasahiro YamakawaMasayuki NishizawaTakayasu Sugihara
    • Osamu MizunoNobuyuki OkudaKoji MoriMasahiro YamakawaMasayuki NishizawaTakayasu Sugihara
    • C22C23/02C22F1/06B22D11/00C23C22/22C23C28/02C23C30/00
    • C22F1/06B22D11/001C22C23/02C23C22/22C23C28/021C23C28/028C23C30/00Y10T428/256
    • A magnesium alloy structural member having excellent corrosion resistance is provided. The magnesium alloy structural member includes a magnesium alloy substrate that contains more than 7.5% by mass of Al and an anticorrosive layer formed on a surface of the substrate by chemical conversion treatment. The substrate contains a precipitate, typically, particles dispersed therein. The particles are made of an intermetallic compound containing at least one of Al and Mg and have an average particle size of 0.05 μm or more and 1 μm or less. The total area of the particles accounts for 1% by area or more and 20% by area or less. The anticorrosive layer includes a lower sublayer and a surface sublayer on the substrate in this order. The surface sublayer is denser than the lower sublayer. The substrate of the magnesium alloy structural member has high corrosion resistance because of a high Al content. The magnesium alloy structural member has excellent corrosion resistance because of the dense sublayer on the front side of the anticorrosive layer, which prevents a corrosive liquid from reaching the substrate. The porous lower sublayer can reduce the tendency of the anticorrosive layer to detach from the substrate, for example, upon impact and allows the magnesium alloy structural member to retain high corrosion resistance.
    • 提供了具有优异耐腐蚀性的镁合金结构件。 镁合金结构件包括含有大于7.5质量%的Al的镁合金基材和通过化学转化处理在基板的表面上形成的防腐蚀层。 底物含有沉淀物,通常分散在其中的颗粒。 颗粒由含有Al和Mg中的至少一种的金属间化合物制成,平均粒径为0.05μm以上且1μm以下。 颗粒总面积占面积的1%以上,面积以下为20%。 防腐层依次包括下层和衬底上的表面子层。 表层子层比下层更致密。 由于Al含量高,所以镁合金构件的基板具有高耐腐蚀性。 镁合金结构件由于在防腐蚀层的正面上的致密子层而具有优异的耐腐蚀性,防止了腐蚀性液体到达基板。 多孔下层可以降低防腐层与基材脱离的倾向,例如在冲击时,镁合金结构件能够保持高的耐腐蚀性。
    • 17. 发明申请
    • IMPACT RESISTANT COMPONENT
    • 抗冲击组件
    • US20130031951A1
    • 2013-02-07
    • US13641669
    • 2011-04-04
    • Koji MoriYukihiro OishiNobuyuki OkudaMasatada Numano
    • Koji MoriYukihiro OishiNobuyuki OkudaMasatada Numano
    • G01N3/00
    • B60R19/03B22D11/001C22C23/02C22F1/00C22F1/06
    • There is provided a lightweight, high strength impact-resistant component having a good impact energy absorptive property. The impact-resistant component is composed of a magnesium alloy containing Al in an amount of more than 7.3% by mass and 12% or less by mass. A rectangular test piece is produced from the impact-resistant component; an iron ball 30 having a mass of 225 g is allowed to freely fall toward a central portion of the test piece while both end portions of the test piece are fixed to supports 21 and 22; and, when a distance between a position from which the iron ball 30 is allowed to freely fall and the test piece is assumed to be a fall height, a fall height H at which a dent is not generated on the test piece by the iron ball 30 is measured. The impact-resistant component has a fall height H of more than 340 mm. In the impact-resistant component of the present invention, the fall height at which a dent is not generated is large. Therefore, the impact-resistant component of the present invention is not dented or is not easily dented even if an impact is applied and thus has high impact resistance.
    • 提供了具有良好的冲击能量吸收性能的轻质,高强度的耐冲击组件。 抗冲击性成分由含有大于7.3质量%且12质量%以下的Al的镁合金构成。 由抗冲击部件制成矩形试件; 允许质量为225g的铁球30自由地向测试件的中心部分落下,同时测试件的两个端部固定在支撑件21和22上; 并且当铁球30被允许自由落下的位置和试验片之间的距离被认为是跌落高度时,由铁球在试验片上不产生凹痕的下降高度H 30。 抗冲击部件的跌落高度H大于340mm。 在本发明的耐冲击部件中,不产生凹陷的下落高度大。 因此,即使施加冲击,本发明的耐冲击部件也不会凹陷或不容易凹陷,因此具有高耐冲击性。