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Composite and prepn process of electronic ceramic material with superhigh temperature stability

A technology of electronic ceramics and ceramic materials, which is applied in the field of functional ceramic materials and its manufacturing, can solve the problems of inability to provide dielectric properties, and achieve the effects of good market prospects, high dielectric constant, and low dielectric loss

Inactive Publication Date: 2005-07-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the capacity temperature characteristics of this material have certain limitations. The capacity change rate in the temperature range of -55 to +125 ° C is less than ± 15%, and it cannot provide stable dielectric properties when it exceeds +125 ° C.

Method used

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  • Composite and prepn process of electronic ceramic material with superhigh temperature stability
  • Composite and prepn process of electronic ceramic material with superhigh temperature stability
  • Composite and prepn process of electronic ceramic material with superhigh temperature stability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Analytical pure B 2 o 3 , PbO, Bi 2 o 3 , SnO 2 、TiO 2 For raw materials according to B 2 o 3 22g, PbO9g, Bi 2 o 3 26g, SnO 2 3g, TiO 2 11g was mixed and melted, that is, the temperature was raised to 900°C at a rate of 6°C / min and kept for 8 hours, then quenched and cooled with ZrO 2 Ball milling with deionized water for 15 hours, drying in an electric oven at 120°C and passing through a 40-mesh sieve to obtain self-made additives; 3 , niobium oxide and magnesium oxide and BaCO 3 and self-made additives as raw materials according to BaTiO 3 96g, Nb 2 o 5 1.7g, MgO 0.6g, BaCO 3 1.1g, additive 17g ratio mixed, with ZrO 2 Ball milling with deionized water for 10 hours, drying in an electric oven at 120°C, adding paraffin, passing through an 80-mesh sieve, pressing under a pressure of 80MPa to form a disc-shaped green body with a diameter of about 20mm and a thickness of about 1mm, and then sintering. That is, after raising the temperature to 500° C. at...

Embodiment 2

[0023] Analytical pure B 2 o 3 , PbO, Bi 2 o 3 , SnO 2 、TiO 2 For raw materials according to B 2 o 3 24g, PbO14g, Bi 2 o 3 15g, SnO 2 4g, TiO 2 12g was mixed and melted, that is, the temperature was raised to 900°C at a rate of 6°C / min and kept for 9 hours, then quenched, and ZrO 2 Ball milling with deionized water for 15 hours, drying in an electric oven at 120°C and passing through a 40-mesh sieve to obtain self-made additives; 3 , niobium oxide and magnesium oxide and BaCO 3 and self-made additives as raw materials according to BaTiO 3 96g, Nb 2 o 5 1.7g, MgO 0.6g, BaCO 3 1.5g, additive 14g ratio mixed, with ZrO 2 Ball milling with deionized water for 10 hours, drying in an electric oven at 120°C, adding paraffin, passing through an 80-mesh sieve, pressing under a pressure of 80MPa to form a disc-shaped green body with a diameter of about 20mm and a thickness of about 1mm, and then sintering. That is, after raising the temperature to 500° C. at a heating...

Embodiment 3

[0027] Analytical pure B 2 o 3 , PbO, Bi 2 o 3 , SnO 2 、TiO 2 For raw materials according to B 2 o 3 24g, PbO9g, Bi 2 o 3 5g, SnO 2 4g, TiO 2 9g was mixed and melted, that is, the temperature was raised to 900°C at a rate of 6°C / min and kept for 3 hours, then quenched and cooled with ZrO 2 Ball milling with deionized water for 15 hours, drying in an electric oven at 120°C and passing through a 40-mesh sieve to obtain self-made additives; 3 , niobium oxide and magnesium oxide and BaCO 3 and self-made additives as raw materials according to BaTiO 3 95g, Nb 2 o 5 2g, MgO 0.6g, BaCO 3 1.1g, additive 13g ratio mixed, with ZrO 2 Ball milling with deionized water for 5 to 15 hours, drying in an electric oven at 120°C, adding paraffin, passing through an 80-mesh sieve, pressing under a pressure of 80MPa to form a disc-shaped green body with a diameter of about 20mm and a thickness of about 1mm, and then Sintering, that is, after raising the temperature to 500° C. at...

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Abstract

The present invention discloses one kind of high and low temperature stable high dielectric constant ceramic dielectric material and its preparation process. The ceramic dielectric material consists of barium titanate, niobium oxide, magnesium oxide, BaCO3 and self-made additive comprising B2O3, Bi2O3, SnO2 and TiO2. The ceramic dielectric material has excellent dielectric performance, high dielectric constant, low dielectric loss, excellent heat stability, low material cost, medium sintering temperature and low cost.

Description

technical field [0001] The invention relates to a ceramic material used in electronic components and a manufacturing method thereof, more specifically, a functional ceramic material and a manufacturing method thereof. Background technique [0002] Today, with the rapid development of the electronic industry, the integration and miniaturization of electronic information technology is promoting the development of electronic information products in the direction of thinning, miniaturization, digitalization, multi-function, high reliability and low cost. Ceramic dielectric capacitors have always occupied a dominant position in the capacitor industry due to their small size, excellent performance and low price. The multilayer ceramic capacitor (MLC) has the advantages of small size, large specific capacitance, high reliability, small internal inductance, and good high-frequency characteristics. Especially with its easy-to-chip structure advantage, it quickly became the leading v...

Claims

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Application Information

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IPC IPC(8): C04B35/468C04B35/622
Inventor 吴顺华苏皓王国庆王爽李媛
Owner TIANJIN UNIV
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