COATED VEHICLE WHEEL AND METHOD
    12.
    发明专利

    公开(公告)号:CA2500476A1

    公开(公告)日:2004-04-08

    申请号:CA2500476

    申请日:2003-09-25

    Applicant: ALCOA INC

    Abstract: A method of coating a vehicle wheel (10) to increase wear and corrosion resistance of the vehicle wheel (10), includes the steps of providing a vehicle wheel (10) and applying a wear and corrosion resistant coating (14) onto a surface of the vehicle wheel (10). The coating (14) is applied to at least a tire bead retaining flange (16, 24) of the vehicle wheel (10). The coating (14) is of particular use with vehicle wheels (10) made of forged aluminum. The coating (14) is selected from tungsten carbide, optionally including cobalt or chrome, a nickel-based superalloy, aluminum and silicon carbide, or stainless steel. The coating (14) is typically applied to a thickness of about 0.004 - 0.01 inch. The surface of the vehicle wheel (10) may be prepared by mechanically abrading the surface or chemically etching t he surface of the vehicle wheel (10). The coating (14) may be applied by cold spraying, thermal spraying, or triboelectric discharge kinetic spraying and other similar processes.

    13.
    发明专利
    未知

    公开(公告)号:DE60123737D1

    公开(公告)日:2006-11-23

    申请号:DE60123737

    申请日:2001-12-11

    Applicant: ALCOA INC

    Abstract: A method of treating a surface of a stacked aluminum alloy ingot during a heating process. Spacer blocks are positioned adjacent aluminum alloy ingots to form a stack, wherein the spacer block has a support surface contacting a contact surface of the aluminum alloy ingot, and at least one of the support surface and the contact surface include a fluorine containing material. The stack is heated to at least a temperature at which the fluorine containing material decomposes or vaporizes such that a layer of a fluorinated oxide compound is formed at the interfaces between the ingots and the spacer blocks.

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