Low-medium low-loss LTCC (Low Temperature Co-Fired Ceramic) microwave ceramic material and preparation method thereof

A technology of microwave ceramics and low loss, applied in the field of electronic ceramic materials and its manufacturing, can solve the problems of reducing ceramic microwave performance, ceramic cracking, etc., and achieve the effects of improving process compatibility and yield, convenient operation, and low dielectric loss
CN103121842AActive Publication Date: 2013-05-29UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2013-05-29

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Abstract

The invention discloses a low-medium low-loss LTCC (Low Temperature Co-Fired Ceramic) microwave ceramic material and a preparation method thereof. The material is composite ceramic containing double phases, wherein the principal crystalline phase is tetragonal-phase scheelite CaWO4; the auxiliary phase is a trigonal crystal system phenacite structure Li2WO4 with the molecular formula of (1-x) CaWo4-xLi2WO4. The preparation method of the low-medium low-loss LTCC microwave ceramic material comprises the following steps of: with CaCO3, WO3 and Li2CO3 as initial materials, calculating the mass percentages of CaCO3, WO3 and Li2CO3 according to the molar ratio of each element in the molecular formula (1-x)CaWo4-xLi2WO4; weighing the materials, preliminarily ball-milling the materials, drying the materials, pre-sintering, secondarily ball-milling the materials; and obtaining the low-medium low-loss microwave ceramic material by carrying out a series of processes including drying, pelletizing, forming, sintering and the like.
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Description

technical field

[0001] The invention belongs to the field of electronic ceramic materials and its manufacture, and relates to a low-intermediate and low-loss microwave ceramic material sintered at low temperature and a preparation method thereof. Background technique

[0002] In recent years, whether it is general-purpose electronic machines, communication equipment or consumer electronic products in the world, they are rapidly developing in the direction of miniaturization, light weight, integration, multi-function and high reliability. LTCC (Low Temperature Co-fired Ceramics) technology, as an advanced three-dimensional assembly and integration technology, has created conditions for the development of passive devices and hybrid integration of passive / active devices, and has rapidly gained popularity in laminated chip passive devices. a wide range of applications. Many internationally renowned manufacturers of electronic materials and components have entered this field, su...

Claims

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