POROUS OXIDE FOR IMPROVED TITANIUM-POLYMER BONDING

    公开(公告)号:US20230092781A1

    公开(公告)日:2023-03-23

    申请号:US17656395

    申请日:2022-03-24

    Applicant: Apple Inc.

    Abstract: A chemical treatment process has been identified as a simple and effective means of improving the bonding of injection-molded polymer to titanium surfaces. This process forms an oxide layer on a titanium surface that includes a layered double hydroxide. The layered double hydroxide both raises the bond strength and minimizes air or water leakage. The process enables the use of titanium alloys with injection molded polymer structural bonds in strong, lightweight, and water-resistant enclosures for consumer electronics.

    Textured surface for titanium parts

    公开(公告)号:US11340652B2

    公开(公告)日:2022-05-24

    申请号:US16584741

    申请日:2019-09-26

    Applicant: Apple Inc.

    Abstract: This application relates to an enclosure for a portable electronic device. The enclosure includes a titanium substrate having a textured surface that includes randomly distributed peaks separated from each other by valleys, where tops of the peaks are separated from bottoms of the valleys by at least a minimum separation distance such that the textured surface is characterized as having an Sq (root mean square height) that is greater than 0.3 micrometers.

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