Biomedical TiZrNbTa high-entropy alloy and preparation method thereof

A high-entropy alloy and biomedical technology, which is applied in the field of high-strength and low-modulus xyMz-based biomedical high-entropy alloy and its preparation, can solve the problems of low wear resistance and corrosion resistance, low price, low elastic modulus and the like, Achieve the effects of good biocompatibility, ultra-high mechanical strength, and good application prospects

Active Publication Date: 2016-07-06
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, compared to bone, these materials fail after long-term use due to a variety of reasons, such as high elastic modulus, low wear and corrosion resistance, and biological inertness.
[0006] Due to the above reasons, the use of existing biomedical materials has been difficult to meet people's needs, hindering the further

Method used

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  • Biomedical TiZrNbTa high-entropy alloy and preparation method thereof
  • Biomedical TiZrNbTa high-entropy alloy and preparation method thereof
  • Biomedical TiZrNbTa high-entropy alloy and preparation method thereof

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Embodiment

[0029] Embodiment: the preparation process of high entropy alloy is as follows:

[0030] (1) Raw material preparation: use metallurgical raw materials Ti, Zr, Nb, Ta, M and other metals with a purity of more than 99.9%, use sandpaper and a grinder to remove the oxide skin of the raw material metal, and use a balance to accurately weigh it for smelting alloys. The alloy composition is shown in Table 1.

[0031] Table 1 is the nominal composition (at%) of three kinds of embodiment alloys

[0032]

[0033]

[0034] (2) Melting and suction casting of high-entropy alloys: the present invention adopts vacuum non-consumable arc melting of alloys. Take the raw materials and put them into the vacuum electric arc furnace respectively, put the elements with high melting point on the upper layer, and cover the lower melting point elements. During smelting, it is required to put the elements with high melting point on the upper layer; Adjust the current to melt the high melting point...

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Abstract

The invention discloses a biomedical TiZrNbTa high-entropy alloy and a preparation method thereof. The high-entropy alloy has a chemical formula of (TiaZrb)x(NbcTad)yMz; the atomic percents of all components are as follows: a not more than 35 at% and not less than 0, b not more than 35 at% and not less than 0, c not more than 35 at% and not less than 0, d not more than 35 at% and not less than 0, a+b=x, c+d=y, x not more than 70 at% and not less than 5, y not more than 70 at% and not less than 5, M is any one or more in V, Mo, Sn, W, Mn, Al, Fe, Co, Ni, Cu, Cr and Zn, z not more than 35 at% and not less than 0, and x+y+z=100. The alloy is higher in strength, excellent in plasticity and low in Young modulus; the components of the alloy is free of poison on human bodies, or are low-toxicity elements to satisfy the biomedical demands; and the high-entropy alloy is broad in application prospect in the aspect of biomedical materials.

Description

technical field [0001] The invention belongs to the field of high-entropy and biomedical materials, and provides a high-strength low-modulus (Ti a Zr b ) x (Nb c Ta d ) y m z It is a biomedical high-entropy alloy and a preparation method thereof, and the high-entropy alloy has good application prospects in biomedical materials. Background technique [0002] High-entropy alloys refer to alloys containing three or more main elements, and the atomic percentage of each element is between 5% and 35%. Because the percentage of none of the alloying elements exceeds 35%, the effect of multi-element high disorder can be fully exerted. In the composition design, each component does not have to have the same atomic ratio, which can further increase the degree of freedom in the design of high-entropy alloys. The various elements in the multi-element alloy can be of the same type or different types, and other trace amounts can be added elements to optimize the structure and prope...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C27/02C22C16/00C22C30/00C22C30/02C22C30/04C22C30/06
CPCC22C1/02C22C16/00C22C27/02C22C30/00C22C30/02C22C30/04C22C30/06
Inventor 吴渊原园吕昭平王辉刘雄军张飞马前徐巍
Owner UNIV OF SCI & TECH BEIJING
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