a mg 2 sio 4 -li 2 tio 3 Composite system LTCC material and preparation method thereof

A system and raw material technology, applied in the field of microwave electronic ceramic materials and their manufacturing, can solve the problems of high sintering temperature, the temperature coefficient of resonant frequency deviates from zero, and can not meet the application requirements, and achieves the effect of high application prospect and value

Active Publication Date: 2020-01-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

Also due to its high sintering temperature and resonant frequency temperature coefficient τ f The large deviation from zero makes it unsuitable for LTCC application requirements

Method used

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  • a mg <sub>2</sub> sio <sub>4</sub> -li <sub>2</sub> tio <sub>3</sub> Composite system LTCC material and preparation method thereof
  • a mg <sub>2</sub> sio <sub>4</sub> -li <sub>2</sub> tio <sub>3</sub> Composite system LTCC material and preparation method thereof

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Experimental program
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Embodiment Construction

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] Step 1: Combine analytically pure MgO and SiO 2 Molar ratio MgO:SiO 2 = 2:1 Weighing and configuring raw materials; ball mill the prepared raw materials once to mix the raw materials evenly, add deionized water according to the mass ratio of powder and deionized water at 1:1, and ball mill for 4 hours at the ball milling speed of 300rpm. After ball milling, dry the powder at 120°C for later use.

[0025] Step 2: Pass the dried powder obtained in Step 1 through a 60-mesh sieve, put it into a crucible for compaction, and heat it up to 1350°C at a rate of 2°C / min for pre-burning, keep it warm for 4 hours, and cool with the furnace get Mg 2 SiO4 Pre-fired.

[0026] Step 3: Add analytically pure Li 2 CO 3 and TiO 2 Moore Billy 2 CO 3 :TiO 2 = 2:1 Weighing and configuring raw materials; ball mill the prepared raw materials once to mix the raw materia...

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Abstract

The invention belongs to the field of microwave electronic ceramic materials and its manufacture, in particular to a Mg 2 SiO 4 -Li 2 TiO 3 Composite system LTCC material and its preparation method. The LTCC material provided by the invention is based on Mg 2 SiO 4 and Li 2 TiO 3 Composite system, obtained by solid phase method; achieve sintering temperature of 800-950°C lower than 960°C (Ag melting point), ε r =9.0~18.0, and has a high Qf value of 50,000~250,000GHz and near zero τ f =‑15~15ppm / ℃, it has high application prospect and value in the field of LTCC technology. It can be widely used in LTCC substrates, laminated microwave devices and modules.

Description

technical field [0001] The invention belongs to the field of microwave electronic ceramic materials and their manufacture, and relates to a kind of f ~ 0ppm / ℃) and high Q f Low temperature co-fired ceramic (Low Temperature Co-fired Ceramic, LTCC) material and preparation method thereof, specifically a kind of Mg 2 SiO 4 -Li 2 TiO 3 Composite system LTCC material and its preparation method. Background technique [0002] With the development of microelectronics technology, LTCC technology has received extensive attention. LTCC technology is widely used in national defense industry, automobiles and information products. Its biggest feature is that LTCC materials can be sintered at low sintering temperatures (<960°C). [0003] With the development of microwave communication technology and radar system, the available communication frequency is extended from microwave to millimeter wave. The high-end microwave communication frequency and the large amount of information ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/462
CPCC04B35/462C04B2235/3445C04B2235/602C04B2235/606C04B2235/656C04B2235/6562C04B2235/6567C04B2235/95
Inventor 苏桦赖元明唐晓莉张怀武荆玉兰李元勋
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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