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Low-temperature co-fired ceramic material and preparation method thereof

A low-temperature co-fired ceramics and raw material technology, applied in the field of electronic ceramic materials, can solve the problems of poor mechanical properties, high dielectric loss, and high sintering temperature, and achieve the goal of improving thermal conductivity and mechanical properties, reducing dielectric loss, and reducing sintering temperature. Effect

Active Publication Date: 2013-11-20
CHONGQING YUNTIANHUA HIGH END NEW MATERIALS DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because it is a single glass-ceramic, the material composition is simple, the performance is stable and easy to control, and the manufacturing process is simple, but its mechanical properties are poor and its thermal conductivity is not high.
Moreover, the dielectric loss of the above two low-temperature co-fired ceramic materials is relatively high, and the sintering temperature is about 850-900°C. The high sintering temperature is not conducive to realizing energy saving and emission reduction.

Method used

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preparation example Construction

[0037] The present invention also provides a preparation method of a low-temperature co-fired ceramic material, comprising the following steps:

[0038] A) Mix the raw materials of the low-temperature co-fired ceramic material described in the above technical solution with water, perform ball milling, drying, pre-sintering, melting, and water quenching to obtain glass slag;

[0039] B) The glass slag is subjected to ball milling, drying, and screening to obtain a low-temperature co-fired ceramic material.

[0040] In the present invention, firstly, the raw material of the low-temperature co-fired ceramic material described in the above technical solution is mixed with water, and then subjected to ball milling treatment. The present invention has no special restrictions on the manner of the ball milling treatment, and is preferably carried out in the following manner:

[0041] Mix calcium hydroxide, silicic acid and water, add zirconia balls for ball milling, then add boric aci...

Embodiment 1

[0051] Put 109.9g of silicic acid and 179.2g of calcium hydroxide in a ball mill jar, then add 202.4g of deionized water and 850g of zirconia balls, and ball mill at a speed of 270r / min for 6 hours, then add 132.5g of boric acid and 14.4g of zirconium nitrate , 3.1 g of phosphoric acid and 105 g of deionized water, and then treated with 270 r / min ball mill for 4 hours. The zirconia balls are filtered out, and the slurry treated by ball milling is dried. The dried powder was pre-fired at 650°C for 4 hours, then melted at 1500°C and water-quenched to obtain glass slag. Mix glass slag and deionized water at a ratio of 1:0.6, and glass slag and zirconia balls at a ratio of 1:2, then ball mill at 270r / min for 10 hours, then dry and sieve to obtain a particle size of 1-3μm Low softening point glass-ceramic system low temperature co-fired ceramic material.

[0052] After the above-mentioned low-temperature co-fired ceramic material was granulated and made into sheets, and sintered ...

Embodiment 2

[0054] Put 120.9g of silicic acid and 137.9g ​​of calcium hydroxide in a ball mill jar, then add 181.2g of deionized water and 800g of zirconia balls, and ball mill at a speed of 270r / min for 6 hours, then add 121.7g of boric acid and 13.1g of zirconium nitrate , 2.8g phosphoric acid and 100g deionized water, and then treated with 270r / min ball mill for 4 hours. The zirconia balls are filtered out, and the slurry treated by ball milling is dried. The dried powder was pre-fired at 650°C for 4 hours, then melted at 1500°C and water-quenched to obtain glass slag. Mix glass slag and deionized water at a ratio of 1:0.6, and glass slag and zirconia balls at a ratio of 1:2, then ball mill at 270r / min for 10 hours, then dry and sieve to obtain a particle size of 1-3μm Low softening point glass-ceramic system low temperature co-fired ceramic material.

[0055] After the above-mentioned low-temperature co-fired ceramic material was granulated and made into sheets, and sintered at 750°...

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Abstract

The invention provides a low-temperature co-fired ceramic material which is prepared by sintering the following raw materials: 23.5wt%-30.5wt% of silicic acid, 28.1wt%-34.4wt% of boric acid, 34.7wt%-42.2wt% of calcium hydroxide, 0.4wt%-1.5wt% of phosphoric acid and 2.8wt%-4.1wt% of zirconium nitrate. In the low-temperature co-fired ceramic material provided by the invention, the sintering temperature can be lowered by lowering the silicon dioxide content introduced by silicic acid and enhancing the boron trioxide introduced by boric acid; and meanwhile, the introduced zirconium and phosphorus elements can promote the formation of microcrystals in microcrystalline glass to lower the dielectric loss, and the formed microcrystal can enhance the heat conductivity and mechanical properties of the low-temperature co-fired ceramic material.

Description

technical field [0001] The invention belongs to the technical field of electronic ceramic materials, and in particular relates to a low-temperature co-fired ceramic material and a preparation method thereof. Background technique [0002] The existing low-temperature co-fired ceramic materials are roughly divided into two types: one is a glass-ceramic material, and the other is a glass-ceramic composite material. [0003] The main component of glass-ceramic composite system low temperature co-fired ceramic material is ceramic phase, namely alumina, silicon oxide and so on. Since the sintering temperature of a single ceramic phase is around 2000°C, in order to lower the sintering temperature, glass with a low melting point needs to be added. The patent application number 201010582325.7 discloses a glass-ceramic low-temperature co-fired ceramic material with a low softening point. Including low softening point glass phase and ceramic phase, the mass ratio of glass phase to cer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00
Inventor 刘明龙杨晓战李在映雒文博江林
Owner CHONGQING YUNTIANHUA HIGH END NEW MATERIALS DEV CO LTD
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