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Medical TiNi shape memory alloy sputtered by Ti-Ta-C-O composite film on surface and its production

A memory alloy, composite film technology, applied in sputtering coating, metal material coating process, ion implantation coating and other directions, can solve the problems of TiNi alloy radiation opacity, unsatisfactory visibility, etc. Improved permeability and biocompatibility

Inactive Publication Date: 2009-02-18
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the radiation opacity of TiNi alloy, that is, the visibility under X-ray is not ideal

Method used

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  • Medical TiNi shape memory alloy sputtered by Ti-Ta-C-O composite film on surface and its production

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The first step: substrate pretreatment

[0026] Select the medical TiNi shape memory alloy substrate with equiatomic ratio, after grinding and polishing, ultrasonic cleaning with absolute ethanol for 3 times, and ultrasonic cleaning with deionized water for 3 times to obtain the sample;

[0027] The second step: oxidation treatment

[0028] The sample prepared in the first step is reacted in an oxygen atmosphere to make the surface generate TiO 2 sample; among them, the oxidation temperature is 150°C, and the pressure is 1×10 3 Pa, oxidation time 50min;

[0029] The third step: ion implantation to make the reinforcement phase

[0030] (A) the described second step that contains TiO 2 The samples were placed in a metal vapor vacuum arc ion source ion implanter for argon ion sputtering to remove surface impurities; among them, the vacuum degree was 1×10 -3 Pa, energy 5KeV, time 20min;

[0031] (B) After treating with argon ions containing TiO 2 The sample was first...

Embodiment 2

[0050] The first step: substrate pretreatment

[0051] Select a medical TiNi shape memory alloy substrate with an equiatomic ratio, and after grinding and polishing the substrate, ultrasonically clean it 5 times with absolute ethanol, and then ultrasonically clean it 5 times with deionized water to obtain a sample;

[0052] The second step: oxidation treatment

[0053] The sample prepared in the first step is reacted in an oxygen atmosphere to make the surface generate TiO 2 sample; among them, the oxidation temperature is 600°C, and the pressure is 1×10 6 Pa, oxidation time 20min;

[0054] The third step: ion implantation to make the reinforcement phase

[0055] (A) the described second step that contains TiO 2 The samples were placed in a metal vapor vacuum arc ion source ion implanter for argon ion sputtering to remove surface impurities; among them, the vacuum degree was 3×10 -3 Pa, energy 8KeV, time 10min;

[0056] (B) After treating with argon ions containing TiO ...

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Abstract

A medical TiNi shape memory alloy with Ti-Ta-C-O composite film sputtered on surface consists of TiC 2-15wt%, TaC 2-15wt%, Ta oxide 0.5-3wt% and TiO2 residues. Titanium exists in TiO2 style, TaC and TiC enhanced phases and Ta oxide are dispersed. It has excellent abrasion and corrosion resistances, better X-ray non-transmittance and biological compatibility.

Description

technical field [0001] The present invention relates to a surface treatment technology of medical TiNi shape memory alloy, more particularly, refers to a kind of medical TiNi shape memory alloy surface, adopts ion implantation Ta, C element to make medical TiNi shape memory alloy surface sputter with Ti - Ta-C-O composite film. Background technique [0002] With the development of modern biomedicine and material science and technology, biomedical materials have developed rapidly, and have played an important role in the repair and reconstruction of human hard tissue defects and deletions. In recent years, biomedical metal materials, especially human implant materials, have developed from precious metal materials such as gold and silver in the 16th to 17th centuries to stainless steel, Co-Cr and titanium alloys with low cost, biocompatibility and corrosion resistance. Alloy materials with better properties. Since the 1970s, TiNi alloy with unique shape memory function, good...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/06C23C14/34C23C14/02C23C14/48C23C14/58
Inventor 李岩魏松波徐惠彬
Owner BEIHANG UNIV