Complex phase powder and preparation method thereof

Abstract

The invention relates to complex phase powder and a preparation method thereof. The preparation method comprises steps as follows: S1, providing ceramic precursor resin and oxide ceramic powder; S2, dissolving the ceramic precursor resin in an organic solvent to obtain a ceramic precursor resin solution, adding the oxide ceramic powder to the ceramic precursor resin solution, and performing stirring at the room temperature to obtain a mixed liquid; S3, grinding the mixed liquid with a grinding process to obtain mixed ceramic slurry, drying the mixed ceramic slurry, and performing powder spraying to obtain the precursor powder; S4, calcining the precursor powder to obtain the complex phase powder. The preparation method adopts a simple process, is low in energy consumption, low in cost andfree from environmental pollution and can be adapted to production and industrial application of large-scale spherical complex phase sub-micron powder. The prepared complex phase powder has good dispersity, uniform particle size, high purity and crystallinity, contains uniform ingredients, has a spherical cladding structure and can achieve the practical purpose.

Description

technical field [0001] The invention relates to a composite powder and a preparation method thereof. Background technique [0002] In recent years, nano-composite ceramic materials have shown better characteristics of high temperature resistance, corrosion resistance, high hardness and high toughness than single-phase ceramic materials. For example, in the zirconia-alumina system, by adding 40% (mass fraction) of alumina to 3Y-TZP and undergoing HIP treatment at 1450°C, a composite ceramic material with a strength of up to 3000MPa was prepared, which is expected to be used as a high-strength ceramic material. Toughness and high-strength structural ceramic materials have been put into practical use and have become a hot spot in the research of high-performance ceramic materials. High-quality composite powder is the basis for the preparation of composite ceramic materials. Surface modification is one of the main technologies of powder processing, which is very important to i...

AI Technical Summary

Problems solved by technology

At present, the main methods for preparing multiphase ceramic powders include coprecipitation method, hydrothermal method, sol-gel method, etc. The preparation methods are complicated, and the powder morphology and phase composition are difficult to control. , the crystal morphology of the multi-phase powder prepared by co-precipitation method and hydrothermal method is mostly submicron rod-like or massive, and it is impossible to obtain sub-micron spherical multi-phase powder

[0003] In order to solve the complex process of preparing multi-phase powder in the existing method, the distribution of powder components and phases is uneven, and at the same time, the powder dispersibility is poor under the condition of not adding active additives, and the growth morphology cannot be obtained as submicron. The technical problem of spherical multi-phase powder, the present invention is proposed

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