Vacuum Melting Process for Removing Matrix Oxide Impurities in Zr-based Amorphous Alloy

Abstract

The invention discloses a vacuum smelting process for removing matrix oxide impurities in a Zr-based amorphous alloy, which comprises the following steps: step 1: vacuum smelting the Zr-based amorphous alloy in a furnace; Inert gas; Step 3: Feed the calcium wire into the melt; Step 4: Stir the melt to make the calcium react with matrix oxide impurities to form CaO; Step 5: Stand for a certain period of time until the CaO floats remove. The invention is easy to operate, uses calcium element to reduce the matrix oxide impurities in the Zr-based amorphous alloy to form oxide CaO, utilizes the characteristics of small density of CaO and is easy to float, and after standing for a certain period of time, the CaO floats up and completes The delamination of CaO and the Zr-based amorphous alloy melt finally removes the matrix oxide impurities in the Zr-based amorphous alloy and improves the purity of the Zr-based amorphous alloy.

Description

technical field [0001] The invention belongs to the technical field of amorphous alloys, in particular to a vacuum melting process for removing matrix oxide impurities in Zr-based amorphous alloys. Background technique [0002] Zr in Zr-based amorphous alloys is easy to combine with oxygen, so it needs to be smelted in a vacuum environment, but it is difficult to avoid a certain oxygen content in the raw materials and smelting furnace, and the smelting process will react to form ZrO 2 Such as matrix oxide impurities, the presence of matrix oxide impurities will adversely affect the performance and surface quality of amorphous materials. In Zr-based amorphous alloy smelting, due to ZrO 2 The density of matrix oxide impurities is close to that of amorphous alloys, and it is not easy to float and remove. Therefore, amorphous alloys usually use rare earth and other elements to deoxidize to form rare earth oxide impurities, and then remove them. However, the cost of rare earth a...

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Problems solved by technology

[0002] Zr in Zr-based amorphous alloys is easy to combine with oxygen, so it needs to be smelted in a vacuum environment, but it is difficult to avoid a certain oxygen content in the raw materials and smelting furnace, and the smelting process will react to form ZrO 2 Such as matrix oxide impurities, the presence of matrix oxide impurities will adversely affect the performance and surface quality of amorphous materials

In Zr-based amorphous alloy smelting, due to ZrO 2 The density of matrix oxide impurities is close to that of amorphous alloys, and it is not easy to float and remove. Therefore, amorphous alloys usually use rare earth and other elements to remove oxygen to form rare earth oxide impurities, and then remove them. However, the cost of rare earth alloys is high, and rare earth The alloy content cannot be adjusted in real time according to the oxygen content in the smelting sampling, and the actual deoxidation demand cannot be accurately calculated, which is not conducive to the popularization and application in the smelting process of Zr-based amorphous alloys