Ceramic material with high dielectric constant and high Qf value as well as preparation method and application thereof

A high dielectric constant, ceramic material technology, applied in ceramics, inorganic insulators, etc., can solve the problem of shortage of microwave dielectric ceramic materials, and achieve the effect of high dielectric constant

Active Publication Date: 2021-01-26
XIAMEN SUNYEAR ELECTRONICS CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the advancement of mobile communication and radar technology, microwave electronic components are gradually developing towards high frequency. Therefore, microwave dielectric ceramic materials with high dielectric constant, high quality factor, and near-zero resonance frequency temperature coefficient have become more and more research hotspots. Microwave dielectric ceramic materials with these three properties are in short supply

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  • Ceramic material with high dielectric constant and high Qf value as well as preparation method and application thereof
  • Ceramic material with high dielectric constant and high Qf value as well as preparation method and application thereof
  • Ceramic material with high dielectric constant and high Qf value as well as preparation method and application thereof

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preparation example Construction

[0029] The preparation method of the ceramic material of high dielectric constant high Qf value of the present invention comprises the following steps:

[0030] ①Synthesis of main material Ba by solid phase method 4+2x ln 4+8x Ti 22-7x o 54 : According to the proportion of elements in the compound, weigh the corresponding mass of high-purity barium carbonate, rare earth oxide Ln 2 o 3 and titanium dioxide are placed in a ball mill, and water is added in a mass ratio of solid material: water = 1: (1.0-2.0) for wet ball milling. After the ball is milled into a uniform powder, the particle size D50 can be 0.4-1.0um, and then dried by a spray drying tower or other methods; then calcined in an air furnace at a temperature range of 1130°C to 1250°C for 2 to 4 hours; finally the main Material Ba 4+2x ln 4+8x Ti 22-7x o 54 powder.

[0031] ② Synthesis of auxiliary material Zr by solid phase method 0.8 sn 0.2 TiO 4 : Mix zirconium dioxide, tin oxide and titanium dioxide in...

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Abstract

The invention provides a ceramic material with a high dielectric constant and a high Qf value and a preparation method thereof, and relates to the field of information function materials. The ceramicmaterial comprises a main crystalline phase and a modified additive. The main crystalline phase includes a main material and an auxiliary material. The general chemical formula of the main crystal phase is Ba4+2xLn4+8xTi22-7xO54. yZr0.8Sn0.2TiO4, wherein x is larger than 0 and smaller than 0.13, and y is larger than 0 and smaller than 0.05. Ba4+2xLn4+8xTi22-7xO54 is the chemical general formula ofthe main material, and Ln is selected from one or more of La, Y, Sm, Dy, Ho, Er and Nd. Zr0.8Sn0.2TiO4 is used as a chemical formula of an auxiliary material. The mass fraction of the main crystal phase in the ceramic material is 99-99.5 wt%, and the mass fraction of the modified additive in the ceramic material is 0.5-1wt%. The main material and the auxiliary material are respectively synthesized by adopting a solid-phase method to prepare a uniform powdery ceramic material, the powdery ceramic material is sintered to obtain the ceramic material with high dielectric constant and high Qf value, and the material can meet the requirements of microwave devices on high dielectric constant and high Qf value.

Description

technical field [0001] The invention relates to the field of information functional materials, and in particular to a ceramic material with high dielectric constant and high Qf value, its preparation method and application. Background technique [0002] Microwave dielectric ceramic materials are a new type of functional ceramic materials developed rapidly in recent years. It is the core basic material of new microwave circuits and devices including dielectric resonators, filters, oscillators, duplexers, antennas, dielectric substrates, etc. It is widely used in modern microwave communication and satellite navigation systems and equipment. With the advancement of mobile communication and radar technology, microwave electronic components are gradually developing towards high frequency. Therefore, microwave dielectric ceramic materials with high dielectric constant, high quality factor, and near-zero resonance frequency temperature coefficient have become more and more research...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/49C04B35/622C04B35/626C04B35/638C04B35/64C04B35/632C04B35/634H01B3/12
CPCC04B35/49C04B35/4686C04B35/622C04B35/62605C04B35/6261C04B35/638C04B35/64C04B35/632C04B35/63488C04B35/63416H01B3/12C04B2235/3293C04B2235/3224C04B2235/3294C04B2235/3298C04B2235/3284C04B2235/3262C04B2235/3267C04B2235/661C04B2235/6562C04B2235/6567
Inventor 杨和成张军志罗昌宸
Owner XIAMEN SUNYEAR ELECTRONICS CO LTD
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