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a znal 2 o 4 Ceramic system material and preparation method thereof

A znal2o4 and ceramic technology, applied in the field of ZnAl2O4 ceramic system materials and their preparation, can solve the problems of large loss and high dielectric constant, achieve the effects of small dielectric loss, lower sintering temperature, and avoid package failure

Active Publication Date: 2021-11-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the needs of the prior art, the present invention provides a ZnAl with low dielectric constant, high quality factor and low sintering temperature for the problems of high dielectric constant and high loss of current glass-ceramic materials. 2 o 4 Ceramic system material and preparation method thereof

Method used

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  • a znal <sub>2</sub> o <sub>4</sub> Ceramic system material and preparation method thereof
  • a znal <sub>2</sub> o <sub>4</sub> Ceramic system material and preparation method thereof
  • a znal <sub>2</sub> o <sub>4</sub> Ceramic system material and preparation method thereof

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Embodiment 1

[0052] This embodiment provides a ZnAl 2 o 4 The preparation method of ceramic system material, is characterized in that, comprises the steps:

[0053] Step 1: Ingredients

[0054] 3.5% K 2 O, 4% Al 2 o 3 , 13% B 2 o 3 , 78% SiO 2 , 1% Na 2 O, 0.5% of Y 2 o 3 As the raw material of potassium aluminum borosilicate glass (hereinafter referred to as KABS glass) for batching; 73% of ZnO, 14% of B 2 o 3 , 12% SiO 2 , 1% Al 2 o 3 As the raw material of zinc borosilicate glass (hereinafter referred to as ZBS glass) for batching; see Table 1 below for details;

[0055] Step 2: Ball Milling

[0056] After batching according to the mass ratio described in step 1, deionized water was used as the ball milling medium, zirconia balls were added, and ball milling was carried out by a planetary ball mill for 4 hours, and the speed of the ball mill was 280 r / min. Dry the obtained slurry at 100°C for 24 hours and pass through a 60-mesh sieve to obtain K-Al-B-Si powder and Zn-B-...

Embodiment 2

[0066] The steps of this embodiment are basically the same as those in Example 1, except that the mass ratio of KABS glass to ZBS glass frit is 7:3, see the data in Table 2 for details.

Embodiment 3

[0068] The steps of this embodiment are basically the same as those in Example 1, except that the mass ratio of KABS glass to ZBS glass frit is 6:4, see the data in Table 2 for details.

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Abstract

a ZnAl 2 o 4 A ceramic system material and a preparation method thereof belong to the technical field of ceramic materials and preparation. The material of the present invention includes glass with a mass fraction of 60% to 70% and alumina with a mass fraction of 30% to 40%. The glass is a mixture of potassium aluminum borosilicate glass and zinc borosilicate glass, wherein potassium aluminum borosilicate The mass fraction of zinc borosilicate glass is 30% to 56%, and the mass fraction of zinc borosilicate glass is 12% to 35%. The glass and alumina are mixed, dried, shaped, and then sintered at low temperature (810°C to 850°C). The present invention makes ZnAl 2 o 4 The dielectric constant of the ceramic system material is 4.65-4.98, the Q×f value is 4746-7360GHz, the thermal expansion coefficient is 4.7-5.6ppm / °C, and the bending strength is 150-202Mpa. The present invention compares existing ZnAl 2 o 4 The base ceramic material significantly reduces the sintering temperature, is compatible with LTCC technology for circuit integration, and has excellent dielectric and mechanical properties. At the same time, the preparation method is simple and the cost of raw materials is low. It is basically the same as the preparation process of traditional glass ceramics, and has a good process. stability.

Description

technical field [0001] The invention belongs to the technical field of ceramic materials and preparation, in particular to a ZnAl 2 o 4 Ceramic system material and its preparation method. Background technique [0002] Microwave dielectric ceramics are one of the new information functional ceramic materials developed in recent decades, and are the focus of research on information functional materials today. With the rapid growth of the electronic consumer goods market of wireless communication systems and microwave devices, electronic components are required to develop in the direction of high frequency, high integration, miniaturization, portability, multi-function and low cost. This also requires microwave electronic components made of microwave dielectric ceramic materials to have better dielectric properties. [0003] Low temperature co-fired ceramics (Low Temperature Co-fired ceramics, LTCC) technology can effectively design multi-layer structure circuits in three-dim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/44
CPCC04B35/44C04B2235/3217C04B2235/365C04B2235/96C04B2235/9607
Inventor 钟朝位尚勇唐斌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA