A kind of alumina-titanium carbonitride composite bulletproof ceramic and its preparation method

Abstract

The invention relates to an alumina-titanium carbonitride complex phase bulletproof ceramic and a preparation method thereof. According to the technical scheme, 92-99 mass parts of a high titanium bauxite raw micro powder and 1-8 mass parts of carbon-containing materials are taken as raw materials. The preparation method comprises the following steps: dissolving 0.1-8 mass parts of a soluble saltinto 4-10 mass parts of water so as to obtain a salt solution; adding the raw materials and the salt solution into a planetary ball mill, and uniformly mixing to obtain a mixture; performing mechanical pressing on the mixed materials under the condition of 100-150 MPa so as to obtain a green body; drying the green body under the condition of 110-200 DEG C for 12-36 hours, and maintaining the temperature in a nitrogen atmosphere at a temperature of 1550-1750 DEG C for 1-8 hours, so as to obtain the alumina-titanium carbonitride complex phase bulletproof ceramic. The method disclosed by the invention is low in cost and simple in process, and the prepared alumina-titanium carbonitride complex phase bulletproof ceramic has the characteristics of being high in strength, high in hardness, high in toughness, capable of containing lots of nanocrystalline pores and low in volume density.

Description

technical field [0001] The invention belongs to Al 2 o 3 The technical field of base complex phase bulletproof ceramics. Specifically relates to an alumina-titanium carbonitride composite bulletproof ceramic and a preparation method thereof. Background technique [0002] Bulletproof materials are protective materials widely used in spacecraft, armored vehicles, helicopters, tanks, self-propelled artillery, and individual bulletproof clothing, helmets, and bulletproof shields. They can resist weapons attacks to a certain extent and protect military equipment and personnel. Therefore, bulletproof materials are one of the indispensable key materials in modern military warfare, and their performance directly restricts the combat capability of military equipment. The development of high-performance bulletproof materials is of great significance to national defense construction. [0003] In order to have excellent penetration resistance, impact resistance and caving resistance ...

AI Technical Summary

Problems solved by technology

[0005] In summary, the improvement of Al 2 o 3 The toughness of ceramics, however, the current toughening methods for Al 2 o 3 The degree of improvement of the fracture toughness of ceramics is limited, and some methods will also increase the density of the material and reduce the strength and hardness, which will have an adverse effect on its anti-elastic performance.