公开(公告)号：US20200080219A1

公开(公告)日：2020-03-12

申请号：US16277072

申请日：2019-02-15

Applicant: Apple Inc.

Inventor： James A. CURRAN ,  Zechariah D. FEINBERG ,  Sonja R. POSTAK

IPC: C25D11/02 ,  C25D11/12 ,  C25D11/16 ,  C25D11/18 ,  C25D11/08

Abstract: Anodic oxide coatings that provide corrosion resistance to parts having protruding features, such as edges, corners and convex-shaped features, are described. According to some embodiments, the anodic oxide coatings include an inner porous layer and an outer porous layer. The inner layer is adjacent to an underlying metal substrate and is formed under compressive stress anodizing conditions that allow the inner porous layer to be formed generally crack-free. In this way, the inner porous layer acts as a barrier that prevents water or other corrosion-inducing agents from reaching the underlying metal substrate. The outer porous layer can be thicker and harder than the inner porous layer, thereby increasing the overall hardness of the anodic oxide coating.

公开(公告)号：US20210109568A1

公开(公告)日：2021-04-15

申请号：US17127948

申请日：2020-12-18

Applicant: Apple Inc.

Inventor： James A. CURRAN ,  Sonja R. POSTAK ,  Todd S. MINTZ

IPC: G06F1/16 ,  C25D11/02 ,  C25D11/26 ,  H05K5/00

Abstract: This application relates to an enclosure for a portable electronic device. The enclosure includes a titanium substrate having a textured surface that includes peaks separated by valleys, where the textured surface is characterized as having (i) an Sdq (root mean square gradient) that is greater than 0.2 micrometers, and (ii) a gloss value that is greater than 90 gloss units as measured at 60 degrees by a gloss meter.

公开(公告)号：US20200173050A1

公开(公告)日：2020-06-04

申请号：US16360871

申请日：2019-03-21

Applicant: Apple Inc.

Inventor： James A. CURRAN ,  Sonja R. POSTAK ,  Karin H. RASMUSSEN ,  James A. DEAN

IPC: C25D11/24 ,  C25D11/34

Abstract: 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 %.