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Method for mfg. crystal boundary layer ceramic medium material and substrate for single layer capacitor and substrate thereof

A technology of a ceramic substrate and a manufacturing method, applied in the direction of fixed capacitor dielectric, fixed capacitor parts, ceramics, etc., can solve the problem of undiscovered, achieve good flatness and roughness, high resistivity, low dielectric loss Effect

Active Publication Date: 2008-09-10
GUANGZHOU AURORA TECHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far in the world, only American AVX and Johanson companies can use grain boundary layer substrates to manufacture SLC products, but no relevant documents at home and abroad have been found to disclose the manufacturing methods of such substrates and the formula of corresponding dielectric ceramic materials

Method used

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  • Method for mfg. crystal boundary layer ceramic medium material and substrate for single layer capacitor and substrate thereof
  • Method for mfg. crystal boundary layer ceramic medium material and substrate for single layer capacitor and substrate thereof

Examples

Experimental program
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Embodiment 1

[0051] 64.66 parts by weight of SrCO 3 , 35.10 parts by weight of TiO 2 , 0.24 parts by weight Nb 2 o 5 , 0.05 parts by weight SiO 2 , 0.1 parts by weight MnO 2 , 1 part by weight CaCO 3 After drying, sieve; raw material is synthesized at 1200°C; the synthesized clinker is crushed and sieved; slurry is prepared, clinker powder is added with adhesive to make slurry, and the slurry is made many times Cast film, with a total thickness of 0.25mm; then cut into films according to the size requirements, spray on the adhesive slurry; stack the films into a bowl, and discharge the glue at a rate of 50 °C per hour to 1150 °C; cool and pack Put it into a hydrogen-nitrogen mixture atmosphere furnace, heat up at a rate of 100°C per hour to 1420°C for 2 hours for sintering; put the fired tiles into an ultrasonic cleaning tank to clean the adhesive separator and separate the tiles at the same time Open; sandwich the ceramic tiles between two smooth and flat alumina plates, and flatten...

Embodiment 2-6

[0055] Below are several other embodiments of the present invention, disclosing the composition and weight percentage of the dielectric ceramic materials of the grain boundary layer ceramics for single-layer capacitors of these several embodiments, adopting the composition and weight parts of the adhesive separator and the composition of the oxidizing agent as follows And parts by weight and process parameters, according to the steps of the manufacturing method of the grain boundary layer ceramic substrate for the single layer capacitor of the present invention, prepare the grain boundary layer ceramic substrate for the single layer capacitor of the present invention.

[0056]

[0057] Sampling the grain boundary layer ceramic substrate for the single-layer capacitor prepared in the above embodiment, sputtering the metal electrode; cutting the sputtered electrode into 2×2mm 2 Chips; measure the mechanical and electrical properties of the chips.

[0058] According to K=11.3C...

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Abstract

This invention relates to a medium porcelain of a grain boundary layer ceramics of a single layer condenser, the composition and weight portion of which is: SrCO3 64.66~65.95, TiO2 34.99~35.69, Nb2O5 0.20~0.45 a modified additive 0.5~1.5 including one or several kinds of SiO2, Al2O3, MnO2 CaCO3 and CuO. This invention also relates to a preparation method for a chip applying said porcelain and the chip. The modified additive of this medium ceramics increase the mechanical and electric performance of the grain boundary and limits the over growing of grains. This method manufactures smooth and clean chips and applies an oxidizer, the additive of which enables it to form a grain boundary of good performance after penetrating into the ceramic chip under 1050~1250deg.C.

Description

technical field [0001] The invention relates to a dielectric ceramic material for capacitors, in particular to a dielectric ceramic material for a grain boundary layer ceramic substrate for a single-layer capacitor; the invention also relates to a single-layer capacitor using the dielectric ceramic material as a raw material A method for manufacturing a grain boundary layer ceramic substrate; the invention also relates to a grain boundary layer ceramic substrate for a single-layer capacitor manufactured by the method. Background technique [0002] Single layer capacitor (SLC) is a new type of ceramic capacitor developed to meet the requirements of high frequency, high integration, miniaturization, low power consumption and high reliability of electronic components. Compared with MLCC multilayer ceramic capacitors, there is no dielectric The current loop between layers has lower equivalent series resistance, higher quality factor and higher reliability at high frequencies, es...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/12H01B3/12C04B35/00C04B35/622
Inventor 庄严朱卓雄
Owner GUANGZHOU AURORA TECHNOLOGIES CO LTD
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