Rare earth-based bulk metallic glass with adjustable rear earth ingredient content

Abstract

The invention relates to rare earth-based bulk metallic glass with adjustable rear earth ingredient content, belonging to the preparation field of bulk metallic glass. The rare earth-based bulk metallic glass with adjustable rear earth ingredient content provided by the invention is composed of Re65Co25Al10, wherein Re refers to CexLayPrzSmsGdt, x is not smaller than 13% while not larger than 30%, y is not smaller than 13% while not larger than 22%, z is not smaller than 4% while not larger than 13%, s is not smaller than 6% while not larger than 13%, t is not smaller than 4% while not larger than 13%, and the sum of x, y, z, s, t is 65%. The bulk metallic glass can be prepared only if proportions of the rear earth elements are randomly adjusted within the range provided by the invention; therefore, the problem that an amorphous state cannot be formed in the preparation process due to slight change of content of one rear earth element is eliminated, thereby reducing the preparation difficulty. More La and Ce with cheap price can be added when preparing the rare earth-based bulk metallic glass so as to effectively reduce the preparation cost of alloy.

Description

technical field [0001] The invention relates to a rare earth-based block metallic glass with adjustable rare earth component content, and belongs to the field of block metallic glass preparation. Background technique [0002] Amorphous alloys, also known as metallic glasses, have metastable structural characteristics of short-range order and long-range disorder. In the solid state, the three-dimensional space of its atoms is topologically disordered, and this state remains relatively stable within a certain temperature range. Compared with crystalline alloys, amorphous alloys have many excellent properties such as high hardness, high strength, high electrical resistance, corrosion resistance and wear resistance, and have attracted much attention and have broad application prospects. [0003] Akihisa Inoue, a Japanese scholar, proposed three empirical rules for obtaining alloys with large amorphous forming ability and wide supercooled liquid phase region: (1) the alloy is co...

AI Technical Summary

Problems solved by technology

Because rare earth elements are extremely easy to oxidize, it is difficult to maintain a specific ratio of rare earth elements; thus increasing the difficulty of preparing rare earth-based bulk metallic glasses

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