A titanium oxide-titanium carbide whisker toughened magnesium alloy biomedical material

A biomedical material, titanium carbide whisker technology, applied in medical science, prosthesis and other directions, can solve the problem of limited performance improvement, and achieve the effect of improving strength, good stability of alloy structure, and improving strength and toughness

Active Publication Date: 2017-12-29
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the existing magnesium alloy materials in my country are in the patent 101837145A. After research and analysis, it is shown that precious metal elements such as Ag are added, but the performance improvement is limited.

Method used

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Embodiment Construction

[0027] The best embodiment of the present invention is provided below: by the chemical composition of magnesium alloy base material and percent by weight: C: 0.2%, Nd: 3%, Mn: 0.5%, Zn: 0.4%, Zr: 0.7%, all the other The magnesium alloy matrix material is prepared for the ratio of Mg:95.2%, and the magnesium alloy powder prepared according to the ratio is added with absolute ethanol to perform mechanical ball milling in a ball mill for 24 hours to obtain an ultrafine powder with a grain size of 50-150 μm. The chemical composition of the titanium oxide-titanium carbide whisker precursor material is: TiO 2 , C, Mn, NaCl, the mass ratio is: 47:46:0.3:6.7. The precursor composite powder capable of generating titanium oxide-titanium carbide whiskers prepared in proportion plus absolute ethanol is mechanized ball milled in a ball mill for 24 hours to obtain an ultrafine precursor composite powder with a grain size of 200-800nm. The titania-titanium carbide whisker and the magnesium ...

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Abstract

The invention belongs to the field of biomedical materials and particularly relates to a titanium oxide-titanium carbide whisker toughened magnesium alloy biomedical material. The titanium oxide-titanium carbide whisker toughened magnesium alloy biomedical material is composed of magnesium alloy substrate material powder and titanium oxide-titanium carbide whisker powder; the magnesium alloy substrate material powder and the titanium oxide-titanium carbide whisker powder are uniformly mixed through a mechanical mixing method; the mixed powder is subjected to cold pressing, vacuum heating degassing and vacuum sintering; and a heat pressing ingot is subjected to equal channel deformation, so that the titanium oxide-titanium carbide whisker toughened magnesium alloy biomedical material is obtained. The toughness, the abrasion resistance and the strength of in-situ generated titanium oxide-titanium carbide whisker toughened magnesium alloy are remarkably improved, and the in-situ generated titanium oxide-titanium carbide whisker toughened magnesium alloy is especially suitable for the biomedical material and also can be applied to parts such as high-end sports car magnesium alloy hubs requiring for high strength and high abrasion resistance.

Description

technical field [0001] The invention belongs to the field of biomedical materials, in particular to titanium oxide-titanium carbide whisker toughened magnesium alloy biomedical materials. Background technique [0002] At present, biomedical materials for clinical applications, such as bone implants and heart stents, are mostly made of stainless steel and titanium alloys. Stainless steel and titanium alloys have good biocompatibility, corrosion resistance and mechanical properties, so the use of stainless steel and titanium alloys It is widely used and recognized in the clinical medical field. For existing metal bone implant materials such as stainless steel and titanium alloy, there is a problem of poor mechanical compatibility with biological bone. The tensile strength of stainless steel, titanium alloy and other materials is more than 5.3 times higher than that of natural bone, and the elastic modulus is more than 11 times higher. Bone implants such as stainless steel an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/14C22C49/04C22C49/14A61L27/06A61L27/04C22C101/12C22C101/02
CPCA61L27/047A61L27/06C22C47/14C22C49/04C22C49/14
Inventor 徐淑波景财年任国成
Owner SHANDONG JIANZHU UNIV
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