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Method for preparing micro-nano porous structure on titanium or titanium alloy surface

A porous structure, titanium alloy technology, applied in metal material coating process, ion implantation plating, coating, etc., can solve the problems of difficult preparation of porous structure, difficult to control pore size, easy peeling, etc., to achieve broad application prospects, Promotes value addition and differentiation, and improves surface energy

Active Publication Date: 2016-09-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the acid etching method is the most widely studied, but the acid etching method has great defects, because titanium will form a dense titanium dioxide protective layer on the surface in most acid solutions; the powder sintering method has the problem that it is difficult to control the pore size; the anode The surface porous structure prepared by oxidation method is titanium dioxide instead of titanium porous structure; the spraying method is to spray a layer of ceramic coating on the surface of titanium metal, which has the problem of easy peeling off
Moreover, it is difficult for the above methods to prepare micro-nano-scale porous structures on the surface of titanium or titanium alloys.

Method used

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  • Method for preparing micro-nano porous structure on titanium or titanium alloy surface
  • Method for preparing micro-nano porous structure on titanium or titanium alloy surface
  • Method for preparing micro-nano porous structure on titanium or titanium alloy surface

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Copper plating is carried out on the surface of a titanium sheet of 15 by 10 mm, and the micro-nano porous surface is formed when the heat treatment temperature is 500 ° C. The specific steps are as follows:

[0035] (1) The surface of the titanium sheet is cleaned. Grinding treatment: Grind the sample with 400#, 800#, 1200# metallographic sandpaper respectively until the surface of the titanium sheet has a metallic luster; water washing: first clean the polished titanium sheet with acetone for 15 minutes; then use deionized water for ultrasonic cleaning 15min; pickling: soak the washed titanium sheet in acid for 1min at room temperature to remove the oxide film on the titanium surface; water washing: rinse the acid-etched titanium sheet with deionized water until there is no pickling solution on the surface.

[0036](2) A layer of copper coating is electroplated on the surface of the titanium sheet. Activation: soak the washed titanium sheet in an activation solution ...

Embodiment 2

[0043] Magnetron sputtering a layer of copper coating on the surface of a 15 by 10 mm titanium sheet, and the surface is micro-nano porous formed when the heat treatment temperature is 800 ° C. The specific steps are as follows:

[0044] (1) The surface of the titanium sheet is cleaned. Grinding treatment: Grind the titanium sheet with 400#, 800#, and 1200# metallographic sandpaper respectively until the surface of the titanium sheet has a metallic luster; washing: first clean the polished titanium sheet with acetone ultrasonically for 15 minutes; then use deionized water to ultrasonically clean it Cleaning for 15 minutes; pickling: soak the washed titanium sheet in acid for 1 minute at room temperature to remove the oxide film on the titanium surface; water washing: rinse the acid-etched titanium sheet with deionized water until there is no pickling solution on the surface.

[0045] (2) Magnetron sputtering a layer of copper coating on the surface of the titanium sheet. (1) ...

Embodiment 3

[0052] A layer of copper coating is electroplated on the surface of a titanium aluminum vanadium (Ti-6Al-4V) alloy sheet of 15 by 10 mm, and the micro-nano porous surface is formed when the heat treatment temperature is 500 ° C. The specific steps are as follows:

[0053] (1) Weigh 30g of 300 mesh titanium-aluminum-vanadium (Ti-6Al-4V) powder, put the powder into a graphite mold with a diameter of 20mm, use spark plasma sintering equipment, sintering temperature is 650°C, and holding time is 10min to prepare samples ; Then cut the sample wire into thin slices with a size of 15 by 10mm.

[0054] (2) Surface cleaning treatment of titanium alloy sheet. Grinding treatment: Grind the titanium sheet with 400#, 800#, and 1200# metallographic sandpaper respectively until the surface of the titanium alloy sheet has a metallic luster; washing: first clean the polished titanium alloy sheet with acetone for 15 minutes; then use deionized Ultrasonic cleaning with water for 15 minutes; pic...

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Abstract

The invention discloses a method for preparing a micro-nano porous structure on a titanium or titanium alloy surface. The method is characterized in that the titanium or titanium alloy surface is subjected to surface copper plating, then heat treatment and dealloying, and particularly comprises the following steps: cleaning the titanium or titanium alloy surface; arranging a copper coating on the titanium or titanium alloy surface via surface electroplating or magnetron sputtering; performing heat treatment to diffuse copper atoms into the titanium or titanium alloy surface; dealloying by adoption of solid-phase method magnesium powder or liquid-phase method molten magnesium; and finally, cleaning and drying with acid and water to obtain titanium or titanium alloy with micro-nano pores in the surface. Compared with the prior art, the method is simple and easy, can overcome the shortcomings of the conventional powder sintering method, acid etching method, anodic oxidation method, spray method and the like, is suitable for small and large titanium or titanium alloy materials, can be used for easily preparing the micro-nano porous structure on the titanium or titanium alloy surface and is wide in applicability.

Description

technical field [0001] The invention relates to a method for preparing a micro-nano porous structure on the surface of titanium or titanium alloy, and belongs to the technical field of surface modification of metal materials. Background technique [0002] The surface porosity of metal materials is a method of modifying the surface of metal materials, which refers to the creation of porous structures on the surface of metal materials. Compared with the dense surface of metal materials, porous metal materials have some special physical and chemical properties, such as: large specific surface area, small specific gravity, high porosity, surface effect and size effect, catalytic activity, biological activity, etc.; and It also has excellent properties such as high thermal conductivity, high electrical conductivity, corrosion resistance, and fatigue resistance of metal materials. Therefore, metallic materials with porous surfaces are widely used in the fields of electrodes, cata...

Claims

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Application Information

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IPC IPC(8): C23C14/35C23C14/16C23C14/58C25D3/38C25D5/50C25D5/48C22C3/00
CPCC22C3/00C23C14/165C23C14/35C23C14/5806C23C14/5873C25D3/38C25D5/48C25D5/50
Inventor 赵佩佩李萍张法明王利利
Owner SOUTHEAST UNIV
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