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TiNiAg memory alloy with antibacterial function and preparation method thereof

A memory alloy and functional technology, applied in the field of shape memory alloys, can solve the problems of inability to prepare TiNi alloys, low solid solubility, and no TiNiAg alloy patent reports, and achieve excellent antibacterial properties, small ion dissolution, and excellent corrosion resistance. sexual effect

Inactive Publication Date: 2011-03-23
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the low solid solubility of Ag in TiNi alloy at room temperature, only 0.26% by weight (Oh KT, Joo UH, Park GH, Hwang CJ, Kim KN.J Biomed Mater Res B ApplBiomater 2006; 76:306- 314), the TiNi alloy with high Ag content cannot be prepared, and there is no patent report on TiNiAg alloy at present

Method used

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  • TiNiAg memory alloy with antibacterial function and preparation method thereof
  • TiNiAg memory alloy with antibacterial function and preparation method thereof
  • TiNiAg memory alloy with antibacterial function and preparation method thereof

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Embodiment Construction

[0024] The following examples describe the present invention in more detail:

[0025] 1. Preparation of Ti 48.5 Ni 48.5 Ag 3 alloy:

[0026] Step 1: Weigh titanium with a purity of 99.9%, nickel with a purity of 99.9%, and silver with a purity of 99.9% according to the proportioning ratio;

[0027] Step 2: Put the titanium, nickel, and silver raw materials weighed in step 1 into a non-consumable vacuum melting furnace with a vacuum degree of 5×10 -4 Pa, filled with high-purity argon to 5×10 4 Pa, repeated smelting 3 to 6 times to obtain Ti 48.5 Ni 48.5 Ag 3 alloy ingot;

[0028] Step 3: Put the TiNiAg alloy ingot obtained in Step 2 into a heat treatment furnace, heat it at 800° C. for 2 hours, and water-cool to obtain a TiNiAg alloy ingot with uniform grain size;

[0029] Step 4: the Ti obtained in Step 3 48.5 Ni 48.5 Ag 3 The alloy ingot is rolled to obtain the desired shape of TiNiAg alloy plate;

[0030] Step five: the Ti obtained in step four 48.5 Ni 48.5 Ag...

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Abstract

The invention provides a TiNiAg memory alloy with the antibacterial function and a preparation method thereof. The TiNiAg memory alloy contains 20%-80% of nickel, 0.1%-10% of silver and the balance of titanium by atomic percent. The alloy not only has good shape memory effect and superelasticity, but also has good matching of mechanical properties. Simultaneously, the alloy material has good corrosion resistance and biocompatibility in simulated body fluid, and cytotoxicity is in the same level of a TiNi alloy. In addition, the alloy material has a broad antimicrobial spectrum and can well inhibit Staphylococcus aureus, Escherichia coli, Staphylococcus epidermidis and other gram-negative and positive bacteria.

Description

technical field [0001] The invention relates to a shape memory alloy, and also relates to a preparation method of the shape memory alloy. Specifically, it is a shape memory alloy with medical antibacterial function and its preparation method. Background technique [0002] In the past 30 years, due to its excellent shape memory effect, superelasticity, mechanical properties, corrosion resistance, radiopacity, and non-influence of nuclear magnetic resonance, TiNi binary alloy has become the second choice after stainless steel, cobalt chromium molybdenum alloy, After pure titanium and titanium aluminum vanadium alloy, it is another metal material widely used in the medical field. [0003] While not changing the basic properties of TiNi binary alloys such as shape memory effect or superelasticity, in order to pursue certain properties, such as high phase transition temperature, wide phase transition temperature hysteresis, narrow phase transition temperature hysteresis, low pha...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C19/03C22C1/02
Inventor 郑玉峰张斌斌王本力周惠敏李莉
Owner HARBIN ENG UNIV
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