A kind of large-size zrti reference crystal material and preparation method thereof

Abstract

A large size ZrTi quasicrystal material uses ZrTi quasicrystal as a main component, and is prepared from Ti, Zr, Ni, and Be in the following atom ratio percentage: (Ti40Zr40Ni20) 100-xBex, wherein x is 1-16, the volume percentage of the ZrTi quasicrystal is more than 90%, and the rod diameter is 3-12mm. The preparation method of the ZrTi quasicrystal material is mainly as follows: first a uniform composition Ti40Zr40Ni20 alloy ingot is melted by a vacuum arc furnace, then Be element is added, a uniform composition (Ti40Zr40Ni20) 100-xBex alloy ingot is prepared by melting in the vacuum arc furnace, and different sizes of quasicrystal materials are obtained by copper mold suction casting technology. The quasicrystalline material is one of the largest quasicrystalline material prepared under the same conditions, quasi alloy composition is continuously adjustable, by varying the alloy composition, the 3-12mm large size ZrTi quasicrystal material can be obtained, the large size ZrTi quasicrystal material can be directly obtained without subsequent processing process, and the preparation technology is simple.

Description

technical field [0001] The invention relates to a large-size ZrTi reference crystal alloy and a preparation method thereof. Background technique [0002] Since the discovery of quasicrystals in Al-Mn alloys by Shechtman et al. in the 1980s, quasicrystals have attracted widespread attention for their unique structures. A large number of studies have shown that quasicrystalline materials have unique physical and chemical properties, such as high hardness, low coefficient of friction, non-stick and wear resistance, etc. [0003] In the past ten years, people have carried out a lot of research work on ZrTi benchmark crystal materials. The study found that the ZrTi reference crystal material has a thermodynamically stable icosahedral structure, which exhibits special transport properties, hydrogen storage properties, and mechanical properties. It is expected to be used as a structural material and functional material in energy, automobile, aviation and other industrial fields w...

AI Technical Summary

Problems solved by technology

At present, the ZrTi reference crystal material is mainly obtained by rapid cooling and solidification by the melt suspension method. This method requires a high cooling rate, especially for TiZrNi bulk quasicrystals, and it is difficult to obtain pure quasicrystals with conventional quasicrystal preparation techniques.

This is not only unfavorable to the understanding of the formation mechanism of ZrTi reference crystal materials, but also unfavorable for the application of ZrTi reference crystal materials as structural materials.

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