ALUMINUM ALLOY CASING, PREPARATION METHOD THEREOF, AND PERSONAL ELECTRONIC DEVICE

摘要

The present disclosure provides an aluminum alloy casing, a preparation method thereof and a personal electronic device. The aluminum alloy casing includes an aluminum alloy matrix and an oxide film layer, wherein the aluminum alloy matrix has a slit, the oxide film layer includes an inner anodic oxide film layer and an outer anodic oxide film layer, the inner anodic oxide film layer has inner anodic oxide film layer nanopores, the outer anodic oxide film layer has outer anodic oxide film layer nanopores, the inner anodic oxide film layer nanopores have a density of 200 to 550 pores/square micrometer, and the outer anodic oxide film layer nanopores have a density of 550 to 900 pores/square micrometer.