Biomedical TiZrNbTa high-entropy alloy and preparation method thereof

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...

AI Technical Summary

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 development of biomedical materials; in addition, using the characteristics of high-entropy alloys can develop the required medical functions (such as hard tissue replacement materials) Biomedical materials with low elastic modulus, good biocompatibility (that is, absolute safety and reliability), low price, and easy processing

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