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    • 6. 发明授权
    • Submersible object with antifouling paint configuration
    • 具有防污漆配置的潜水物品
    • US07739974B1
    • 2010-06-22
    • US12204926
    • 2008-09-05
    • Kevin R. AndersonChristopher J. Misorski
    • Kevin R. AndersonChristopher J. Misorski
    • B63B59/00
    • B63B59/04C09D5/1693
    • Antifouling materials are used to provide first and second layers or coatings on a submersible object. The first and second layers are visually distinct from each other, such as being made of two distinct colors, so that the ablation of an outer layer will be evident when an inner layer is exposed to show a different color in the regions of ablation. The materials for the first and second layers can be chemically active to cause the antifouling nature of the materials or can be electrically conductive to permit their use in the creation of either chlorine bubbles on the wetted surface or a change in ionic characteristic of water in contact with the wetted surface.
    • 防污材料用于在潜水物体上提供第一层和第二层或涂层。 第一层和第二层在视觉上彼此不同,例如由两种不同的颜色制成,使得当内层暴露以在消融区域中显示不同颜色时,外层的烧蚀将是显而易见的。 用于第一层和第二层的材料可以是化学活性的以引起材料的防污性质,或者可以导电,以允许它们用于在湿润表面上产生氯气泡或接触水中的离子特性的变化 与湿润的表面。
    • 8. 发明授权
    • Aluminum-silicon alloy having reduced microporosity
    • 具有降低微孔的铝硅合金
    • US07666353B2
    • 2010-02-23
    • US11042252
    • 2005-01-25
    • Raymond J. DonahueTerrance M. ClearyKevin R. Anderson
    • Raymond J. DonahueTerrance M. ClearyKevin R. Anderson
    • C22C21/04
    • C22C21/04C22C21/02
    • An aluminum silicon die cast alloy having a very low iron content and relatively high strontium content that prevents soldering to dies into die casting process. The alloys of the present invention also have a modified eutectic silicon and modified iron morphology, when iron is present, resulting in low microporosity and high impact properties. The alloy comprises 6-22% by weight silicon, 0.05 to 0.20% by weight strontium and the balance aluminum. Preferably, the alloy of the present invention contains in weight percent: 6-20% silicon, 0.05-0.10% strontium, 0.40% maximum iron and most preferably 0.20% maximum iron, 4.5% maximum copper, 0.50% maximum manganese, 0.60% maximum magnesium, 3.0% maximum zinc, balance aluminum. On cooling from the solution temperature, the strontium serves to modify the eutectic silicon structure as well as create an iron phase morphology change if iron is present, facilitating feeding through the aluminum interdendritic matrix. This, in turn, creates a finished die cast product with extremely low levels of microporosity defects. The strontium content also appears to create a non-wetting monolayer of strontium atoms on the surface of a molten casting, preventing die soldering, even at very low iron contents. The alloy may be used to cast any type of object and is particularly suited for casting outboard marine propellers, driveshaft housings, gear case housings, Gimbel rings and engine blocks.
    • 铝硅压铸合金,具有非常低的铁含量和相对较高的锶含量,防止模具焊接到压铸过程中。 当存在铁时,本发明的合金还具有改性的共晶硅和改性的铁形态,导致低微孔性和高冲击性。 该合金包含6-22重量%的硅,0.05-0.20重量%的锶和余量的铝。 优选地,本发明的合金优选含有6-20%硅,0.05-0.10%锶,0.40%最大铁,最优选0.20%最大铁,4.5%最大铜,最大锰0.50%,最大0.60% 镁,3.0%最大锌,余量铝。 在从溶液温度冷却时,锶用于改变共晶硅结构,并且如果存在铁,则产生铁相形态变化,促进通过铝树枝状间质基质进料。 这又产生了具有极低水平的微孔缺陷的成品压铸产品。 锶含量也似乎在熔融铸件的表面上产生锶原子的非润湿单层,即使在非常低的铁含量下也能防止模具焊接。 该合金可用于铸造任何类型的物体,特别适用于铸造船外螺旋桨,传动轴壳体,齿轮箱壳体,Gimbel环和发动机缸体。