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High-frequency high permittivity ceramic medium and preparation method thereof

A ceramic medium and high dielectric technology, applied in the field of BaO-Nd2O3-TiO2 system ceramic medium and its preparation, can solve the problem of small dielectric constant of high-frequency ceramic medium

Inactive Publication Date: 2009-09-09
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ba-Nd-Ti system was studied by Byung-Hae Jung et al., the technology disclosed in "Glass-ceramic for low temperature co-fired dielectric ceramic materials based on La 2 o 3 -B 2 o 3 -TiO 2 glass with BNT ceramics”, Journal of the European Ceramic Society 25(2005) 3187-3193 (based on adding La 2 o 3 -B 2 o 3 -TiO 2 In the research on low temperature co-firing performance of glass BNT ceramics), the disadvantage is that the dielectric constant ε of the high-frequency ceramic medium prepared by LTCC technology is too small, only 20

Method used

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Embodiment Construction

[0021] The present invention takes analytical pure as the initial raw material, adopts conventional equipment in this technical field, and the specific implementation method is as follows.

[0022] (1) Making BZH glass powder:

[0023] According to the weight percentage of raw materials, BaO 32.6%, ZnO, 26.5%, H 3 BO 4 40.9%, mixed ball milling with zirconia balls and deionized water for 4.5 hours, then dried at 120°C, passed through 250 holes / cm 2 Sieve the sample, put the powder in a crucible, melt in an electric furnace at a high temperature at 1100°C, and obtain glass slag by quenching; put the glass slag in a ball mill for 25 hours, then dry it at 120°C, and then 250 holes / cm 2 Separating sieve to produce BZH glass.

[0024] (2) Production of BaO-Nd 2 o 3 -TiO 2 System BNT ceramic dielectric frit:

[0025] Batching by weight percentage of raw material, BaCO 3 19.5%, Nd 2 o 3 19.6%, Bi 2 o 3 26.1%, TiO 2 34.8%, mixed with zirconia balls and deionized wat...

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Abstract

The invention discloses a high-frequency high-dielectric ceramic medium. The components and weight percentages of raw materials are: BZH glass powder 9-31%, BNT ceramic medium frit 69-91%; the components of the BZH glass powder and The weight percentage content of the raw materials is BaO32-33%, ZnO 26-27%, H3BO4 40-41%; the components of the BNT ceramic dielectric frit and the weight percentage content of the raw materials are BaCO3 19-20%, Nd2O3 19-20% %, Bi2O3 26-27%, TiO2 34.5-35.5%. The preparation steps are: (1) making BZH glass powder, (2) making BaO-Nd2O3-TiO2 system BNT ceramic medium frit, (3) making BaO-Nd2O3-TiO2 system ceramic medium. The present invention overcomes the shortcoming of low dielectric constant ε in the prior art, and provides a high-frequency high-dielectric ceramic medium with low-temperature sintering, high dielectric constant, low dielectric loss, and excellent thermal stability, which is applied to IC Low temperature co-fired ceramic technology in the field.

Description

technical field [0001] The present invention relates to a ceramic composition characterized by composition, in particular to a BaO-Nd 2 o 3 -TiO 2 System ceramic media and methods for their preparation. Background technique [0002] Low temperature cofired ceramic technology (Low Temperature Cofired Ceramic, LTCC) is a remarkable multidisciplinary integrated component technology that has emerged in recent years. LTCC technology is to make low-temperature sintered ceramic powder into a green ceramic tape with precise thickness and density, and use laser drilling, microporous grouting, precision conductor paste printing and other processes to make the required circuit pattern on the green ceramic tape, and Embed multiple passive components (such as low-capacity capacitors, resistors, filters, impedance converters, couplers, etc.) After sintering, it can be made into a passive integrated component of a three-dimensional circuit network, and can also be made into a three-dim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/46C04B35/622
Inventor 吴顺华王爽陈力颖陈志兵刘俊峰
Owner TIANJIN UNIV