A kind of inorganic powder material with self-healing sintering function and its preparation method and application

Abstract

The invention relates to the technical field of inorganic powder materials, and provides an inorganic powder material with a self-healing sintering function, a preparation method and an application thereof. The composition of the inorganic powder material provided by the invention includes silicon dioxide, glass powder, silicate ore powder, zinc borate, zinc oxide, aluminum hydroxide and calcium carbonate. During the sintering process, the cracks can be repaired and healed under the action of glass powder, zinc borate and zinc oxide. There is no need to gradually increase the temperature during sintering, and it can be sintered directly from room temperature to the high-temperature zone, which saves sintering time and improves sintering efficiency. , and the sintering speed of the inorganic powder material of the present invention is fast, and it can be sintered and formed within 5 minutes; the inorganic powder material provided by the present invention can be directly applied in the form of dry powder, and can also be used with water, oily solvent, polymer material etc. as the carrier for application, the carrier has a wide range of adaptability. The preparation method provided by the invention is simple, and the raw materials can be directly mixed, and the industrial production is easy.

Description

technical field [0001] The invention relates to the technical field of inorganic powder materials, in particular to an inorganic powder material with self-healing and sintering function, its preparation method and application. Background technique [0002] Inorganic powder materials are composed of one or more solid powders. During the sintering process, they begin to shrink after being heated to a certain temperature, and become dense and hard sintered bodies at a temperature lower than the melting point. After sintering, inorganic powder materials have excellent properties such as high temperature resistance, wear resistance, corrosion resistance, and oxidation resistance. They have important applications in powder metallurgy, ceramics, refractory materials, and high-temperature materials. [0003] At present, inorganic powder materials are generally composed of aluminum oxide, magnesia, clay, potassium feldspar, quartz and kaolin, etc. This inorganic powder material will ...

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Problems solved by technology

[0003] At present, inorganic powder materials are generally composed of aluminum oxide, magnesia, clay, potassium feldspar, quartz and kaolin, etc. This inorganic powder material will produce cracks when it suddenly enters the high temperature zone or the sintering temperature fluctuates greatly. Therefore, during sintering, it is necessary to slowly raise the temperature and sinter in stages to prevent cracks. Sintering using traditional kiln methods generally requires several hours of sintering, and the production efficiency is low. Moreover, cracks are more likely to occur when the sintered layer is thin, and the requirements for tooling equipment are very high. In addition, the inorganic powder materials commonly used in this field can only use water as a carrier (dry the water before sintering, which does not affect the sintering of the powder material), and mix it into a slurry for grouting or tape casting. Then sinter; if the traditional sinter powder is mixed with organic matter, it will seriously affect the sintering, and the carrier has a single application range

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