| abstract |
The invention provides an electronic device casing, a preparation method thereof, and an electronic device. The electronic device casing comprises: an aluminum alloy base material; and a PVD functional layer, wherein the PVD functional layer is arranged on one surface of the aluminum alloy base material , in the direction away from the aluminum alloy substrate, the content of at least one element in the PVD functional layer gradually changes, and presents various valences. In the shell, the compactness of the PVD functional layer is greatly improved, and the corrosion resistance and reliability are significantly improved. |