Unlock instant, AI-driven research and patent intelligence for your innovation.

Sintering aid-free low-temperature sintered composite dielectric ceramic material and preparation method thereof

A low-temperature sintering, dielectric ceramic technology, applied in the field of microwave dielectric ceramic materials, can solve the problems of high sintering temperature, quality factor Q×f value to be improved, etc., to achieve improved sintering characteristics, low sintering temperature, high relative density. Effect

Active Publication Date: 2020-06-30
江西重恒工瓷科技有限公司
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Li 2 (Mg 0.96 Ni 0.04 ) SiO 4 The sintering temperature is too high to meet the requirements of LTCC, and its quality factor Q×f value needs to be improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sintering aid-free low-temperature sintered composite dielectric ceramic material and preparation method thereof
  • Sintering aid-free low-temperature sintered composite dielectric ceramic material and preparation method thereof
  • Sintering aid-free low-temperature sintered composite dielectric ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0023] The present embodiment 1-6 provides a low-temperature sintered composite dielectric ceramic material without a sintering aid, including Li 2 (Mg 0.96 Ni 0.04 ) SiO 4 and LiZn 0.93 co 0.07 PO 4 two ingredients. Its preparation process is as follows figure 1 As shown, it includes the steps of batching, primary ball milling, pre-calcination, secondary ball milling, granulation and low-temperature sintering. Among them, Li in the composite dielectric ceramic material 2 (Mg 0.96 Ni 0.04 ) SiO 4 with LiZn 0.93 co 0.07 PO 4 The molar ratio is 0.3:0.7~0.8:0.2. Specifically:

[0024] Wherein, adopt oxidation method to prepare described Li 2 (Mg 0.96 Ni 0.04 ) SiO 4 , the raw material contains the following molar percentages of each component, and the sum of the molar percentages of each component is 100%:

[0025]

[0026]

[0027] Prepare the LiZn by oxidation method 0.93 co 0.07 PO 4 , the raw material contains the following molar percentages of ea...

Embodiment 7-10

[0044] In Examples 7-10, the formula of the composite ceramic material is completely consistent with that of Example 4. The difference from Example 4 is that the sintering temperatures are 880°C, 890°C, 910°C, and 920°C during low-temperature sintering, and other process parameters are the same as those of Example 4. 4 are the same. Table 3 shows the performance test results of the composite dielectric ceramic materials of Comparative Examples 3-6.

[0045] The performance test result of table 3 embodiment 7-10 composite dielectric ceramic material

[0046]

[0047]It can be seen from Examples 7-10 that under the premise of consistent formulation, the microwave dielectric properties of composite ceramic materials have a certain relationship with their sintering temperature. At 880°C, the sintered density of the composite ceramic material is the lowest at 86.4%, and its Qf value is also the lowest; at 890-920°C, the sintered density of the composite ceramic material exceeds...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a sintering aid-free low-temperature sintered composite dielectric ceramic material and a preparation method thereof. The material comprises two components of Li < 2 > (Mg < 0.96 > Ni < 0.04 >) SiO < 4 > and LiZn < 0.93 > Co < 0.07 > PO < 4 >, wherein the molar ratio of the Li < 2 > (Mg < 0.96 > Ni < 0.04 >) SiO < 4 > to the LiZn < 0.93 > Co < 0.07 > PO < 4 > is 0.3: 0.7 to0.8: 0.2. The sintering aid-free low-temperature sintered composite dielectric ceramic material has the excellent characteristics of low dielectric constant, high quality factor, high relative density, relatively stable temperature characteristic, low sintering temperature and the like, in addition, the composite dielectric ceramic can be well matched and co-sintered with silver paste, and the sintering aid-free low-temperature sintered composite dielectric ceramic material can be widely applied to the technical field of low-temperature co-sintered ceramics.

Description

【Technical field】 [0001] The invention relates to the technical field of microwave dielectric ceramic materials, in particular to a low-temperature sintered composite dielectric ceramic material without a sintering aid and a preparation method thereof. 【Background technique】 [0002] Low-temperature co-fired ceramic (LTCC) technology is a packaging method that realizes three-dimensional large-scale integration of passive devices instead of surface mounting. It can be applied to military and civilian products such as aerospace, communication terminals, and Internet of Things sensors. Generally speaking, the embedded electrode material of LTCC is silver, and its melting point is 961°C. However, in order to ensure the reliability of metal electrode materials for multilayer circuit printing on dielectric ceramics, the more suitable sintering temperature is below 920°C. . At present, adding low-melting glass and multi-component oxides is a common method to achieve low-temperatur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B35/20C04B35/447C04B35/626
CPCC04B35/20C04B35/447C04B35/62605C04B35/62675C04B2235/3203C04B2235/3279C04B2235/3275C04B2235/3284C04B2235/96
Inventor 肖明
Owner 江西重恒工瓷科技有限公司