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Preparation method of medical graphene enhanced titanium alloy bars

A titanium alloy and graphene technology, which is applied in metal material coating technology, medical science, prosthesis, etc., can solve the problems of easy wear and corrosion of metal, poor wear resistance and hardness, and shortened service life, so as to ensure quality , Excellent performance, excellent alloy mechanical properties

Active Publication Date: 2015-11-04
北京奥精医疗器械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Metals, ceramics and polymer materials are the three major medical artificial bone joint materials today, and each of the three materials has its own advantages and disadvantages: metals and ceramics have been widely used in the medical field of loading, but metals are easy to wear and corrode, while ceramics The brittleness is high: the polymer material has good flexibility but poor wear resistance and hardness
However, the relationship between titanium alloy and bone is only a kind of mechanical interlocking integration. After the implant has been used for a long time in the body, the wear debris generated by friction will affect its biological inertia, thereby causing local tissue inflammation and shortening its service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a medical titanium alloy rod, comprising the following steps:

[0028] (1) Ingot preparation: The chemical composition of the ingot is: zirconium 6.5%, niobium 16.6%, iron: 1.95%, chromium: 0.68%, gallium: 0.72%, tin: 0.38%, hafnium 0.05%, tantalum 1.66% %, aluminum: 1.59%, vanadium: 0.28%, boron: 0.165%, cerium: 0.17%, and the balance is titanium;

[0029] The ingredients are formulated according to the mass percentage of the alloy composition, smelted in a high vacuum electric arc heating furnace, fully stirred, and cast into an ingot, and the ingot is heated in a vacuum furnace with Ar gas protection, and the temperature of the ingot is raised to 930°C at 230°C / hour , keep warm for 8 hours, then cool down to 560°C at 135°C / hour, keep warm for 4 hours, then cool down to 285°C at 85°C / hour, keep warm for 5 hours, continue to cool down to 186°C at 58°C / hour, keep warm for 2.5 hours, Then cool to room temperature with the furnace;

[0030] (2) For...

Embodiment 2

[0043] A method for preparing a medical titanium alloy rod, comprising the following steps:

[0044] (1) Ingot preparation: The chemical composition of the ingot is: zirconium 9.5%, niobium 16.8%, iron: 1.58%, chromium: 0.72%, gallium: 0.88%, tin: 0.28%, hafnium 0.06%, tantalum 1.6% %, aluminum: 1.3%, vanadium: 0.27%, boron: 0.145%, cerium: 0.166%, and the balance is titanium;

[0045] The ingredients are formulated according to the mass percentage of the alloy composition, smelted in a high vacuum electric arc heating furnace, fully stirred, and cast into an ingot, and the ingot is heated in a vacuum furnace with Ar gas protection, and the temperature of the ingot is raised to 930°C at 230°C / hour , keep warm for 7 hours, then cool down to 570°C at 130°C / hour, keep warm for 4.5 hours, then cool down to 295°C at 84°C / hour, keep warm for 3.5 hours, continue to cool down to 185°C at 58°C / hour, keep warm for 3.5 hours, Then cool to room temperature with the furnace;

[0046] (...

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Abstract

A preparation method of medical graphene enhanced titanium alloy bars includes the following steps of preparing ingot blanks, performing forging forming, performing heat treatment, performing surface pretreatment, preparing graphene films, spraying surface coatings and the like. Due to cooperation of alloy component design, the forging technology, heat treatment, optimization of the spraying technology, and technology refinement, the preparation process of the medical titanium alloy bars can be more refined, quality is guaranteed, the mechanical property of alloy is excellent, and the titanium alloy bars can serve as substitute materials for repairing bones, joints, artificial tooth roots and other hard tissue.

Description

technical field [0001] The invention relates to a method for preparing medical graphene-reinforced titanium alloy rods, and belongs to the technical field of medical artificial bone preparation. Background technique [0002] Titanium and titanium alloys are widely used in the biomedical field due to their low density, high strength, low elastic modulus, excellent corrosion resistance, and good biocompatibility. They are ideal raw materials for the production of complex surgical implants. The titanium alloys implanted in early surgery were mainly pure titanium and Ti6Al4V alloys, but with the deepening of application, the shortcomings of pure titanium and Ti6Al4V alloys were also found. The strength is higher, but the V element contained is harmful to the human body. Therefore, a medical titanium alloy Ti6Al7Nb with Nb substituted for V was developed and used to produce artificial joints. [0003] Metals, ceramics and polymer materials are the three major medical artificial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02C22F1/18C23C4/06C23C4/14C23C22/02A61L27/06A61L27/30
Inventor 陆春玲
Owner 北京奥精医疗器械有限责任公司