Titanium-based multi-element thin film bicolor anode forming method and product thereof

Abstract

A titanium-based multi-element thin film bicolor anode forming method includes the following steps that a base material is provided; the base material is washed; a titanium-based multi-element thin film is deposited on the base material, wherein the titanium-based multi-element thin film contains titanium and at least one type of another metal; a mask is formed on the base material; the base material with the titanium-based multi-element thin film is used as an anode to be soaked in an electrolyte; a first direct-current voltage is led in so that the surface of the titanium-based multi-element thin film can be oxidized and a first titanium-based multi-element oxidation film layer can be generated on the base material; the mask is removed; the base material is used as the anode to be soaked in the electrolyte to be subjected to anodic treatment; a second direct-current voltage lower than the first direct-current voltage is led in so that the surface of the titanium-based multi-element thin film can be oxidized and a second titanium-based multi-element oxidation film layer can be generated on the base material; and the base material is washed. The invention further provides a product which comprises the titanium-based multi-element thin film and is subjected to bicolor anodic treatment.

Description

technical field [0001] The present invention relates to a method for forming a titanium-based multi-element thin film two-color anode and its products, in particular to a method for forming a titanium-based multi-element oxide film layer on the surface of a substrate so that the substrate has more than two metallic luster colors , and products made by this method. Background technique [0002] Nowadays, portable electronic products are very popular, such as mobile phones, personal digital assistants, computers and so on. Consumers pay more and more attention to their appearance, so the shells of various electronic products usually have bright surfaces, especially metal surfaces, which are usually treated with various procedures to make them have an attractive smooth surface and gloss. [0003] In order to color the surface of the housing, currently known techniques include the use of anodic oxidation to form a titanium oxide film layer on the metal surface to produce color....

AI Technical Summary

Problems solved by technology

This method is limited to a single color and cannot produce gradient color changes

The titanium oxide film produced by anodizing produces different colors due to different thicknesses. The thickness depends on factors such as voltage. It is very difficult to form titanium oxide films of different thicknesses on the same shell to produce different colors.

[0004] Furthermore, in order to form another color, some stick a layer of plastic film on the metal shell, and the film will cover the metal shell, which cannot provide real metal color and touch.

[0005] Therefore, how to produce two or more metallic luster colors on the surface of the housing and have a metallic touch, the applicant of the present invention once proposed the "two-color anode titanium film forming method and its products" that has been approved in Taiwan Patent Publication No. 201305392, but The pencil hardness of the titanium film after anodizing with a voltage of 10 volts is about 3H, and there is still room for improvement

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