Gradient ceramic forming device

Abstract

The invention belongs to the field of gradient ceramic forming, and discloses a gradient ceramic forming device. The device includes a non-aperture mold and a first bracket, a second bracket and a third bracket arranged parallel and opposite in a vertical direction, a conductive carrier is arranged on the first bracket and a conductive carrier is arranged below the third bracket for forming a uniform electrostatic field between the first bracket and the third bracket, the second bracket is provided with a non-hole mold which is externally covered with a heating pad, after ceramic slurry is injected into the non-hole mold, the ceramic slurry is heated by the heating pad so that the weak acid is released from the ester PH modifier after hydrolysis in the ceramic slurry, the weak acid reactswith the curing agent in the ceramic slurry to release high-valence metal positive ions, and the metal positive ions are distributed in the ceramic slurry in a gradient concentration under the actionof an electrostatic field, thereby forming the gradient ceramic. The invention realizes the shaping of gradient ceramics with controllable composition gradient and continuous variation of composition,has simple operation and high shaping efficiency, and is suitable for the preparation of gradient ceramics of various structures and functions.

Description

technical field [0001] The invention belongs to the field of gradient ceramic forming, and more specifically relates to a gradient ceramic forming device. Background technique [0002] Gradient material refers to the heterogeneous material whose material composition or structure presents a gradient gradient in space, and generally presents the inhomogeneity of the macrostructure and the continuity of the microstructure. This gradient of composition or structure is usually accompanied by gradually changing functional properties, so it has great application prospects in chemical engineering, biomedicine, electronic information, aerospace and other fields. [0003] Gradient ceramic materials not only have the characteristics of gradient materials, but also have the advantages of high strength, high temperature resistance, and corrosion resistance of ceramic materials, so they have attracted extensive attention from researchers at home and abroad in recent years. Zhu Yinyin and...

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a gradient ceramic forming device, the purpose of which is to provide a forming device for forming gradient ceramics with continuous components and no stratification, wherein through the design of the non-porous mold, Realize that the ceramic slurry is heated and applied an electrostatic field after being injected into the mold, so as to realize the release of charged high-valent metal cations and gradient concentration distribution, and effectively avoid the problems of uneven composition gradient transition and thermodynamic mismatch caused by interlayer interface bonding. Finally, gradient ceramics with excellent mechanical properties and functionality are prepared

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