Composite ceramic material preparation method
A technology of composite ceramics and ceramic powder, which is applied in the field of preparation of composite ceramic materials, can solve the problems of sensitivity and high dielectric loss, and achieve the effects of high dielectric coefficient and low sintering temperature suitable for popularization and application
Inactive Publication Date: 2016-05-11
SHAANXI HUANKE BIOLOGICAL TECH CO LTD
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Problems solved by technology
The copper calcium titanate used in recent years has a high dielectric constant and good temperature stability. However, as a dielectric material, the dielectric loss of copper calcium titanate is too high, and the dielectric constant value has a great influence on the process. Very sensitive and other shortcomings limit its practical application
Method used
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Experimental program
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Embodiment Construction
[0009] The preparation method of a kind of composite ceramic material of the present invention, mixes with synthetic copper calcium titanate and calcium titanate, obtains required ceramic powder after ball milling and drying; Add binder, ceramic powder The body is dry-pressed to make a thin circular green body with a diameter of 12mm and a thickness of about 1.6mm; then the green body is placed in a muffle furnace and sintered in air to obtain a ceramic sample.
[0010] In the preparation method of a composite ceramic material according to the present invention, the adhesive is PVA.
[0011] A preparation method of a composite ceramic material according to the present invention, the pressure of the dry pressing is 25MPa.
[0012] In the preparation method of a composite ceramic material according to the present invention, the sintering temperature is 1000° C.; the sintering time is 5 hours. The dielectric loss of pure calcium titanate ceramics is very large, mainly due to the...
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Abstract
The invention belongs to the field of chemical preparation and discloses a composite ceramic material preparation method. The method is characterized by including steps: mixing synthesized copper calcium titanate and calcium titanate, and performing ball milling and drying to obtain required ceramic powder; adding a binding agent, and subjecting the ceramic powder to dry pressing to obtain thin round blanks 12mm in diameter and 1.6mm in thickness approximately; putting the blanks in a muffle furnace, and sintering in air to obtain ceramic samples. By improvement of an original preparation process, the copper calcium titanate and the calcium titanate are adopted for synthesis, composite ceramic materials prepared according to the method have high dielectric coefficients and further have advantages of freeness of lead and low sintering temperature, and technical simplicity in preparation, easiness in operation and suitableness for popularization and application are realized.
Description
technical field [0001] The invention belongs to the field of chemical preparation, in particular to a method for preparing a composite ceramic material. Background technique [0002] With the continuous advancement of science and technology, various new material synthesis techniques are widely used. With the miniaturization of ceramic capacitors, the requirements for dielectric materials are getting higher and higher, requiring them to have a higher dielectric constant. The copper calcium titanate used in recent years has a high dielectric constant and good temperature stability. However, as a dielectric material, the dielectric loss of copper calcium titanate is too high, and the dielectric constant value has a great influence on the process. The shortcomings such as very sensitive limit its practical application. Contents of the invention [0003] The present invention aims to solve the above problems, and provides a method for preparing a composite ceramic material. ...
Claims
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IPC IPC(8): C04B35/465C04B35/622
Inventor 郝青
Owner SHAANXI HUANKE BIOLOGICAL TECH CO LTD