Methods for applying a coating over laser marking

    公开(公告)号:US09808829B2

    公开(公告)日:2017-11-07

    申请号:US14846269

    申请日:2015-09-04

    Applicant: Apple Inc.

    Abstract: Coatings for filling cracks within anodic films formed from, for example, a laser marking process are described. The cracks generally have widths of nanometers in scale and can extend from an external surface of an anodic film to an underlying metal substrate. The coatings fill the cracks to prevent liquid and contaminants from entering the cracks and reaching the metal substrate, thereby preventing corrosion of the underlying metal substrate. The coatings can be hydrophobic such that water is wicked away from the cracks. In some cases, the coatings are fluoropolymer coatings. Methods include spray-on techniques that provide a thin and uniform layer of the coating. The spray-on technique can be configured to spray on a fluoropolymer precursor onto the anodic film such that the fluoropolymer precursor diffuses into and polymerizes into the fluoropolymer coating within the cracks.

    CORROSION RESISTANT MAGNET ASSEMBLY
    6.
    发明申请

    公开(公告)号:US20170272864A1

    公开(公告)日:2017-09-21

    申请号:US15464077

    申请日:2017-03-20

    Applicant: APPLE INC.

    Abstract: Embodiments of the disclosure pertain to methods of plating magnets with a stack of layers such that the resulting magnet assembly has improved corrosion resistance. Embodiments of the disclosure are also directed to magnet assemblies formed by such methods. Some embodiments include a High Phosphorus Electroless Nickel (HiPEN) layer with Phosphorus content greater than 11% by weight.

    METHODS FOR APPLYING A COATING OVER LASER MARKING
    9.
    发明申请
    METHODS FOR APPLYING A COATING OVER LASER MARKING 有权
    用于涂覆激光标记的方法

    公开(公告)号:US20170066011A1

    公开(公告)日:2017-03-09

    申请号:US14846269

    申请日:2015-09-04

    Applicant: Apple Inc.

    Abstract: Coatings for filling cracks within anodic films formed from, for example, a laser marking process are described. The cracks generally have widths of nanometers in scale and can extend from an external surface of an anodic film to an underlying metal substrate. The coatings fill the cracks to prevent liquid and contaminants from entering the cracks and reaching the metal substrate, thereby preventing corrosion of the underlying metal substrate. The coatings can be hydrophobic such that water is wicked away from the cracks. In some cases, the coatings are fluoropolymer coatings. Methods include spray-on techniques that provide a thin and uniform layer of the coating. The spray-on technique can be configured to spray on a fluoropolymer precursor onto the anodic film such that the fluoropolymer precursor diffuses into and polymerizes into the fluoropolymer coating within the cracks.

    Abstract translation: 描述了用于在由例如激光打标工艺形成的阳极膜内填充裂纹的涂层。 裂纹通常具有纳米级的尺寸并且可以从阳极膜的外表面延伸到下面的金属基底。 涂层填充裂缝以防止液体和污染物进入裂纹并到达金属基底,从而防止下面的金属基底的腐蚀。 涂层可以是疏水性的,使得水从裂纹中恶化。 在某些情况下,涂层是氟聚合物涂层。 方法包括喷涂技术,其提供薄且均匀的涂层层。 喷涂技术可以配置成将氟聚合物前体喷涂到阳极膜上,使得含氟聚合物前体扩散到裂缝内并聚合到含氟聚合物涂层中。

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