A kind of preparation method of zirconium-based amorphous alloy surface nanostructure layer

Abstract

The invention belongs to the technical field of metal surface treatment, and specifically relates to a preparation method of a nanostructure layer of a zirconium-base amorphous alloy surface. According to the preparation method, a disc made of zirconium-base amorphous alloy is used as a working electrode, and a rotating disc electrode system is used for preparing the nanostructure layer on the zirconium-base amorphous alloy surface. According to the preparation method, the nanostructure layer can be formed on the zirconium-base amorphous alloy surface, the nanostructure layer is composed of aplurality of nanorods with the diameter between 10 and 30 nm, and uniform micropores are formed between the nanorods; when the zirconium-base amorphous alloy with the nanostructure layer is implantedin vivo, bone ingrowth is facilitated, and synostosis is formed together with target tissues; the rotating disc electrode system is used for preparing the nanostructure layer, and by-products and impurities can be thrown away from the surface of the disc during high-speed rotation of the rotating disc in the forming process of the nanostructure layer, so that adverse effects of the by-products andthe impurities on the nanostructure layer are avoided, and the uniform fine nanostructure layer is obtained.

Description

technical field

[0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a method for preparing a zirconium-based amorphous alloy surface nanostructure layer. Background technique

[0002] Amorphous alloys are generally composed of more than five metal elements, and the content of each metal element is greater than 5%. It is a highly chaotic metastable alloy material. Zirconium-based amorphous alloys with zirconium as the main element are more likely to form an amorphous structure due to the characteristics of multi-element competition for nucleation. Compared with traditional implant materials Ti alloys, Zr-based amorphous alloys have higher strength and hardness, and are closer to the elastic modulus of human bones, and can be used as next-generation implant materials. As a biomaterial for long-term implantation in the human body, it must not only have good biomechanical properties, but also have excellent corrosion res...

Examples

preparation example Construction

[0024] The preparation method of the nanostructure layer on the surface of the zirconium-based amorphous alloy comprises the following specific steps: putting the three electrodes into the electrolyte solution containing fluorine ions, adjusting the voltage of the working electrode, the rotating speed of the working electrode, the temperature of the electrolyte solution and the voltage output time, applying the voltage , to prepare nanostructured layers.

[0025] Among them, the three electrodes are: working electrode: disc made of zirconium-based amorphous alloy, reference electrode: saturated calomel electrode (potential at room temperature is 0.241V), auxiliary electrode: square graphite or platinum sheet.

[0026] The electrolyte is an aqueous solution of ethylene glycol containing fluorine ions.

[0027] Zirconium-based amorphous alloys are composed of five elements: Zr, Cu, Ni, Ti, and Al. The mass percentages of each element are Zr 50-65%, Cu 15-25%, Ni 10-15%, Ti 5-10%...

Embodiment 1

[0030] Put the working electrode, saturated calomel electrode and auxiliary electrode (square platinum sheet) into the electrolyte, adjust the working electrode voltage to 8V (vs SCE), the working electrode speed to 800rpm, the electrolyte temperature to 25°C, and the voltage output time to After 40 minutes, voltage was applied, and the disc was taken out after power off, cleaned and dried to obtain a zirconium-based amorphous alloy with a nanostructure layer on the surface.

[0031] Wherein, the electrolytic solution is obtained by dissolving sodium fluoride in water, and then mixing the aqueous solution of sodium fluoride and ethylene glycol, the fluoride ion concentration is 0.4mol / L, and the volume percentage of water is 5%.

[0032] figure 1 It is the scanning electron micrograph of the nanostructure layer prepared in embodiment 1, from figure 1 It can be seen that a uniform and dense nanostructure layer is formed on the surface of the treated zirconium-based amorphous a...

Embodiment 2

[0035] Put the working electrode, saturated calomel electrode and auxiliary electrode (square platinum sheet) into the electrolyte, adjust the working electrode voltage to 10V (vs SCE), the working electrode speed to 1000rpm, the electrolyte temperature to 25°C, and the voltage output time to After 40 minutes, voltage was applied, and the disc was taken out after power off, cleaned and dried to obtain a zirconium-based amorphous alloy with a nanostructure layer on the surface.

[0036] Wherein, the electrolytic solution is obtained by dissolving sodium fluoride in water, and then mixing the sodium fluoride aqueous solution with ethylene glycol, the fluoride ion concentration is 0.4mol / L, and the volume percentage of water is 10%.

technical field

[0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a method for preparing a zirconium-based amorphous alloy surface nanostructure layer. Background technique

[0002] Amorphous alloys are generally composed of more than five metal elements, and the content of each metal element is greater than 5%. It is a highly chaotic metastable alloy material. Zirconium-based amorphous alloys with zirconium as the main element are more likely to form an amorphous structure due to the characteristics of multi-element competition for nucleation. Compared with traditional implant materials Ti alloys, Zr-based amorphous alloys have higher strength and hardness, and are closer to the elastic modulus of human bones, and can be used as next-generation implant materials. As a biomaterial for long-term implantation in the human body, it must not only have good biomechanical properties, but also have excellent corrosion res...

Examples

preparation example Construction

[0024] The preparation method of the nanostructure layer on the surface of the zirconium-based amorphous alloy comprises the following specific steps: putting the three electrodes into the electrolyte solution containing fluorine ions, adjusting the voltage of the working electrode, the rotating speed of the working electrode, the temperature of the electrolyte solution and the voltage output time, applying the voltage , to prepare nanostructured layers.

[0025] Among them, the three electrodes are: working electrode: disc made of zirconium-based amorphous alloy, reference electrode: saturated calomel electrode (potential at room temperature is 0.241V), auxiliary electrode: square graphite or platinum sheet.

[0026] The electrolyte is an aqueous solution of ethylene glycol containing fluorine ions.

[0027] Zirconium-based amorphous alloys are composed of five elements: Zr, Cu, Ni, Ti, and Al. The mass percentages of each element are Zr 50-65%, Cu 15-25%, Ni 10-15%, Ti 5-10%...

Embodiment 1

[0030] Put the working electrode, saturated calomel electrode and auxiliary electrode (square platinum sheet) into the electrolyte, adjust the working electrode voltage to 8V (vs SCE), the working electrode speed to 800rpm, the electrolyte temperature to 25°C, and the voltage output time to After 40 minutes, voltage was applied, and the disc was taken out after power off, cleaned and dried to obtain a zirconium-based amorphous alloy with a nanostructure layer on the surface.

[0031] Wherein, the electrolytic solution is obtained by dissolving sodium fluoride in water, and then mixing the aqueous solution of sodium fluoride and ethylene glycol, the fluoride ion concentration is 0.4mol / L, and the volume percentage of water is 5%.

[0032] figure 1 It is the scanning electron micrograph of the nanostructure layer prepared in embodiment 1, from figure 1 It can be seen that a uniform and dense nanostructure layer is formed on the surface of the treated zirconium-based amorphous a...

Embodiment 2

[0035] Put the working electrode, saturated calomel electrode and auxiliary electrode (square platinum sheet) into the electrolyte, adjust the working electrode voltage to 10V (vs SCE), the working electrode speed to 1000rpm, the electrolyte temperature to 25°C, and the voltage output time to After 40 minutes, voltage was applied, and the disc was taken out after power off, cleaned and dried to obtain a zirconium-based amorphous alloy with a nanostructure layer on the surface.

[0036] Wherein, the electrolytic solution is obtained by dissolving sodium fluoride in water, and then mixing the sodium fluoride aqueous solution with ethylene glycol, the fluoride ion concentration is 0.4mol / L, and the volume percentage of water is 10%.

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