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公开(公告)号：US11214886B2
公开(公告)日：2022-01-04
申请号：US16360851
申请日：2019-03-21
申请人： Apple Inc.
摘要： This application relates to an enclosure for a portable electronic device. The enclosure includes an aluminum alloy substrate and an anodized layer overlaying and formed from the aluminum alloy substrate, wherein the anodized layer has an external surface that has a concentration of zinc that is between about 3 wt % to about 7 wt %.
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公开(公告)号：US11371157B2
公开(公告)日：2022-06-28
申请号：US16360871
申请日：2019-03-21
申请人： Apple Inc.
摘要： This application relates to a method for forming an enclosure for a portable electronic device, the enclosure including a metal substrate that is overlaid by an anodized layer. The method includes dyeing the anodized layer by exposing pores of the anodized layer to a dye. The method further includes sealing the dye within the pores by exposing the anodized layer to a zinc-based sealing solution, where an external surface of the anodized layer having the pores that are sealed includes an amount of zinc between about 3 wt % to about 6 wt %.
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公开(公告)号：US11352708B2
公开(公告)日：2022-06-07
申请号：US15233728
申请日：2016-08-10
申请人： Apple Inc.
IPC分类号： C23C14/10 , C25D11/24 , H05K5/04 , C25D11/14 , C25D11/26 , C25D11/30 , C25D11/22 , B32B15/04 , C25D11/08 , C25D11/04
摘要： Colored oxide coatings having multiple oxide layers are described. Processes for forming the multilayer oxide coating can include converting a portion of a metal substrate to a primary oxide layer, coloring the primary oxide layer, and depositing a secondary oxide layer on the primary oxide layer. The primary oxide layer and the secondary oxide layer can be at least partially transparent such that a texture of an underlying metal substrate surface is visible through the multilayer oxide coating. A top surface of the secondary oxide layer can be polished to a high gloss to give the multilayer oxide coating an appearance of depth.
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