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    • 99. 发明申请
    • METHOD FOR APPLYING A METAL LAYER TO A LIGHT METAL SURFACE
    • 方法用于将金属层上合金表面
    • WO0166830A2
    • 2001-09-13
    • PCT/DE0100944
    • 2001-03-07
    • ATOTECH DEUTSCHLAND GMBHMEYER HEINRICHWUENCHE MATHIAS
    • MEYER HEINRICHWUENCHE MATHIAS
    • C25D5/30C22C38/00C25D3/20C25D3/56C25D7/10C25D21/12C25D21/14
    • C22C38/002C25D3/20C25D3/562
    • The invention relates to a method for applying a metal layer to surfaces of light metals. Iron of an aqueous deposition bath that contains Fe(II)-compounds is electrolytically deposited on the surfaces by means of dimensionally stable anodes which are insoluble in said deposition bath. The method is particularly suitable for coating cylinder bearing surfaces of internal combustion engines and of rotationally symmetrical components, especially valves, nozzles and other components of high-pressure injection systems for motors of motor vehicles, with layers that are provided with a very high resistance to wear and tear. The invention also relates to nanocrystalline iron/phosphor layers which can preferably be formed by depositing iron in the presence of compounds which contain orthophosphite and/or hypophosphite. Said layers are provided with good corrosion resistance in addition to the good resistance to wear and tear.
    • 所以建议施加金属层,以轻金属的表面的方法,其中含有含水沉积浴中的铁(II)化合物的铁被下Vervendung尺寸稳定的,不溶性阳极在表面上沉积浴电解。 该方法特别适用于具有非常高的耐磨性的层,特别是阀门,喷嘴和用于汽车发动机的高压喷射系统的其他部分涂覆内燃机和旋转对称部件的圆筒面。 此外,本发明涉及纳米晶体铁/含磷化合物层可以优选通过铁的沉积在亚磷酸和/或次磷酸盐的存在下形成的。 除了良好的耐磨性,这些层还具有良好的耐腐蚀性。