A kind of method that molten salt electric deoxidation method prepares v-4cr-4ti alloy

Abstract

The invention discloses a method for preparing V-4Cr-4Ti alloy through a fused salt electro-deoxidation method and belongs to the fields of nonferrous metallurgy, electrochemistry and the like. The method for preparing the V-4Cr-4Ti alloy through the fused salt electro-deoxidation method comprises the following steps that (1) material mixing and tabletting are conducted, and a mixed oxide tablet is prepared through pressing after a vanadium oxide, a titanium oxide, a chrome oxide and metal powder are ball-milled and mixed according to the mass percentage; (2) the tablet is sintered, and a mixed oxide sintered body is obtained by sintering the tablet under the vacuum condition or in an inert gas atmosphere; and (3) molten salt electrolysis is conducted, electrolysis is conducted in a reactor containing a fusing electrolyte by using the mixed oxide sintered body as the cathode and using a high-purity graphite rod as the anode under the protection of inert gas, fused salt on the surface of an electrolytic product is removed, and thus the V-4Cr-4Ti alloy is obtained. According to the method for preparing the V-4Cr-4Ti alloy through the fused salt electro-deoxidation method, the technique is simple, raw materials are easy to obtain, the production cycle is short, pollution is low, the production cost is low, the current efficiency is high, and the components of prepared V-4Cr-4Ti alloy powder are uniform.

Description

technical field [0001] The invention belongs to the fields of nonferrous metal metallurgy, electrochemistry and the like, and in particular relates to a method for preparing V-4Cr-4Ti alloy by a molten salt electric deoxidation method. Background technique [0002] Safety is the basic premise for the development of nuclear energy. Under the complex conditions of high heat and high radiation in the reactor, the selection of nuclear reactor structural materials is very harsh. The V-4Cr-4Ti alloy in the vanadium-based alloy has excellent low activation characteristics, high temperature strength, resistance to radiation induced expansion and damage, and good dimensional stability due to the complex thermodynamic, chemical, stress and electromagnetic environments in the nuclear fusion reactor. properties such as high thermal conductivity, low thermal expansion coefficient, low elastic modulus, good creep resistance, good processability, and liquid lithium corrosion resistance, an...

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Problems solved by technology

[0006] In view of the problems of high energy consumption, long process flow, metal volatilization loss, and serious environmental pollution in the process of preparing V-4Cr-4Ti alloy by traditional methods, as well as the problems of low cathode conductivity and low current efficiency in the preparation of metals and alloys by electro-deoxidation , the present invention provides a method for preparing V-4Cr-4Ti alloy by molten salt electro-deoxidation method, and prepares low-activity structural material V-4Cr-4Ti alloy for fusion reactor by electro-deoxidation method that improves the current efficiency of the electrolysis process

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