Superfine multi-component carbide ceramic powder prepared by molten salt assisted carbon thermal reduction method and method

By introducing high boiling spots of salt CACL2 in the carbon heat reduction method, the thermal treatment temperature of multi -sets of carbonized ceramic powder has been reduced, the problem of thick powder in the existing technology is solved, and the super fine multi -group meta yuan carbonization is achieved. Preparation of object ceramic powder.

CN119371206APending Publication Date: 2025-01-28NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Application Number
CN202411568553.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-05
Publication Date
2025-01-28

AI Technical Summary

Technical Problem

The existing carbon thermal reduction method requires high-temperature heat treatment when preparing multi-component carbide ceramic powders, resulting in coarse particle size of the powder, limiting the application of this method in the field of high-entropy ceramic preparation.

Method used

The melting salt auxiliary carbon thermal reduction method is used to reduce the reduction temperature by using high -boiling salt CACL2, and promote the solid solution between the transition metal cation and reduce thermal treatment temperature, thereby preparing an ultra -fine multi -group yuan carbonic ceramic powder.

Benefits of technology

Effectively reduce thermal treatment temperature, reduce the requirements of energy consumption and heat treatment furnace, avoid the transition growth of carbide grains and sintering between particles. Essence

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Abstract

The invention discloses superfine multi-component carbide ceramic powder prepared by a molten salt assisted carbon thermal reduction method and a method, and belongs to the technical field of ultrahigh-temperature ceramic preparation. According to the method disclosed by the invention, the high-boiling-point molten salt CaCl2 is used for reducing the reduction temperature and promoting solid solution between solutes, so that the heat treatment temperature is reduced to the greatest extent on the premise of ensuring that carbon thermal reduction and solid solution reaction are fully carried out, and the energy consumption and the requirements on a heat treatment furnace are greatly reduced. Due to reduction of the heat treatment temperature, transition growth of transition metal carbide crystal grains and sintering among particles are effectively avoided, and the prepared powder can have the superfine particle size without further grinding.
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Citation Information

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