阅读说明：本技术 处理具有氧化层的合金基材 (Treating alloy substrates having oxide layers ) 是由 吴冠霆 C·卡什亚普 于 2017-04-13 设计创作，主要内容包括：本主题涉及处理具有氧化层的合金基材。使阳极化的合金基材与包含钛的碱性混合物接触以形成经处理的基材。该阳极化的合金基材包含在其表面上的氧化层。将经处理的基材烘烤以形成成品基材。该成品基材包含在氧化层中的二氧化钛粒子。(the present subject matter relates to treating alloy substrates having an oxide layer. Contacting the anodized alloy substrate with an alkaline mixture comprising titanium to form a treated substrate. The anodized alloy substrate includes an oxide layer on a surface thereof. The treated substrate is baked to form a finished substrate. The finished substrate comprises titanium dioxide particles in an oxide layer.)

1. A method, comprising:

Contacting an anodized alloy substrate with an alkaline mixture comprising titanium to form a treated substrate, wherein the anodized alloy substrate comprises an oxide layer on a surface thereof; and

Baking the treated substrate to form a finished substrate, wherein the finished substrate comprises titanium dioxide particles in the oxide layer.

2. The method of claim 1, wherein the alkaline mixture comprising titanium is a slurry comprising titanium dioxide nanoparticles, and wherein contacting the anodized alloy substrate with the alkaline mixture comprises immersing the anodized alloy substrate in the slurry comprising titanium dioxide nanoparticles.

3. The method of claim 1, wherein the basic mixture comprising titanium is a titanium compound solution, and wherein contacting the anodized alloy substrate in the basic mixture comprises sealing a plurality of pores in the oxidized layer using the titanium compound solution.

4. The method of claim 1, wherein contacting the anodized alloy substrate with the alkaline mixture comprising titanium comprises spraying a solution comprising titanium dioxide on the anodized alloy substrate.

5. The method of claim 1, wherein the alloy substrate is an aluminum alloy substrate.

6. The method of claim 1, wherein the alkaline mixture comprising titanium has a pH of about 8-12.

7. The method of claim 1 wherein the baking of the treated substrate is carried out at a temperature of about 105-110 ℃ for a period of about 20-40 minutes.

8. A method, comprising:

Anodizing the alloy substrate to form an anodized alloy substrate comprising a plurality of pores in a surface thereof; and

Immersing the anodized alloy substrate in a slurry comprising titanium dioxide nanoparticles to deposit titanium dioxide nanoparticles in the plurality of pores, wherein the slurry is basic.

9. the method of claim 8, wherein the slurry comprising titanium dioxide nanoparticles comprises about 5-75 wt% titanium dioxide nanoparticles.

10. The method of claim 8, wherein the slurry comprising titanium dioxide nanoparticles further comprises about 0.1-2 wt% of at least one dispersant selected from the group consisting of sodium silicate, sodium hexametaphosphate, sodium phosphate, sodium polyacrylate, and combinations thereof.

11. The method of claim 8, further comprising:

Sealing the anodized alloy substrate after depositing titanium dioxide nanoparticles in the plurality of pores; and

And baking the sealed alloy substrate.

12. the method of claim 8, wherein the titanium dioxide nanoparticles in the slurry have a size of about 3-50 nm.

13. A method, comprising:

Forming an oxide layer on a surface of the alloy substrate by electrolytic oxidation, the oxide layer including a plurality of pores;

Sealing the plurality of pores with a solution of a titanium compound, the sealing forming a sealed substrate, wherein the solution of titanium compound is basic; and

Baking the sealed substrate to form a finished substrate, wherein the finished substrate comprises titanium dioxide particles in the plurality of pores.

14. The process of claim 13 wherein said solution of titanium compound comprises a titanium compound in an amount of about 1 to about 30 weight percent.

15. The method of claim 13 wherein the titanium compound solution comprises at least one titanium compound selected from the group consisting of titanium dioxide, titanium hydroxide, titanium phosphate, titanium metal complexes, and combinations thereof.

background

An oxide layer may be provided on the surface of the alloy substrates to improve their corrosion resistance, appearance, hardness, wear resistance, adhesive properties, paint adhesion, and other properties. Alloy substrates having an oxide layer may be used in a variety of applications. For example, aluminum alloy substrates having an oxide layer are used to manufacture housings for electronic devices such as smart phones, tablet computers, and notebook computers. An oxide layer may be provided on the alloy substrate by an anodization process.