Surface treatment method of BaTiO3 ceramic substrate used for single-layer capacitor

A ceramic substrate and surface treatment technology, applied in capacitors, capacitor manufacturing, circuits, etc., can solve problems such as surface scratches, surface voids, substrate breakage, etc., to improve pass rate, ensure integrity, and improve thickness uniformity Effect

Active Publication Date: 2015-11-18
GUANGZHOU AURORA TECHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to improper processing methods and the characteristics of high toughness and low hardness of the material, there are often surface scratches, surface voids, large thickness differences, and broken substrates after substrate grinding, which has caused serious waste in the cost and utilization of ceramic substrates.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A surface treatment method of BaTiO3 ceramics for single-layer capacitors is to directly grind the BaTiO3 ceramic substrates to the required thickness, and the roughness reaches 100-200nm. After the sintered ceramic substrates are classified according to the size specifications, select substrates with the same thickness and size for surface treatment. In this embodiment, a ceramic substrate whose size is 30.8mm×30.8mm×0.35mm is ground to a thickness of 0.15mm as an example:

[0018] (1) Choose a planet carrier that can be completely bonded to the ceramic substrate, and its material is one or more of high-quality glass fiber board (FR-4), epoxy resin, and plastic. If there is a problem with the tightness, please use a blade or scissors to deal with it in time;

[0019] (2) Select one or more of copper disc, aluminum disc, cast iron disc, ceramic disc, gold velvet disc and cashmere disc as the grinding disc, place the planet carrier and ceramic substrate on the lower gri...

Embodiment 2

[0026] A method for surface treatment of BaTiO3 ceramics for single-layer capacitors is to directly grind BaTiO3 ceramic substrates to the required thickness, and the roughness reaches 60-90nm. After the sintered ceramic substrates are classified according to the size specifications, select the thickness, Substrates of consistent size are surface treated. In this embodiment, a ceramic substrate whose size is 30.8mm×30.8mm×0.35mm is ground to a thickness of 0.15mm as an example:

[0027] (1) Choose a planet carrier that can be completely bonded to the ceramic substrate, and its material is one of PBC board and polyurethane. If there is any problem with the bond, please use a blade or scissors to deal with it in time;

[0028] (2) Select one or more of copper disc, aluminum disc, cast iron disc, ceramic disc, gold velvet disc and cashmere disc as the grinding disc, place the planet carrier and ceramic substrate on the lower grinding disc properly, and cover Put the upper grindi...

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Abstract

The invention discloses a surface treatment method of a BaTiO3 ceramic substrate used for a single-layer capacitor. The surface treatment method comprises the steps of: (1) selecting a grinding disc; (2) selecting a grinding liquid; (3) selecting a planetary frame; (4) polishing the substrate after grinding, wherein a grinding rate is controlled to range from 8 to 10mu m / min, a polishing rate is controlled to range from 3 to 4mu m / min, is controlled to range from 3 to 5 kg, and the grinding time is controlled to be within 30min; (5) mixing one or more of deionized water, alcohol, acetone and a cleaning agent evenly, and carrying out ultrasonic cleaning for 30 min at the temperature ranging from 40 to 50 DEG C within a power range from 250 to 300W; (6) and carrying out thermal treatment on the substrate after surface treatment under the conditions of temperature ranging from 500 to 600 DEG C and heat preservation time of 2 hr. By adopting the surface treatment method, the recycling type cutting machine can protect the factory environment, and prevents cutting fluid from contaminating the field.

Description

technical field [0001] The invention relates to the technical field of surface-mounted ceramic components, in particular to a surface treatment method for a BaTiO3 ceramic substrate for a single-layer capacitor. Background technique [0002] BaTiO 3 As a commonly used material for the preparation of electronic components, ceramics have good ferroelectricity, piezoelectricity, withstand voltage and insulation properties, and are widely used in the manufacture of ceramic sensitive components. [0003] BaTiO 3 The high-temperature sintering process was used in the synthesis of ceramic substrates, which caused the prepared ceramic substrates to suffer from deformation, uneven surface, high surface roughness and other adverse factors, which seriously affected the performance of ceramic substrates as electronic components. performance and bonding during assembly. [0004] For the surface treatment of this ceramic material, single-sided or double-sided grinding methods are mostl...

Claims

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Application Information

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IPC IPC(8): H01G13/00
Inventor 丁明建庄彤罗正李杰成廖浩然
Owner GUANGZHOU AURORA TECHNOLOGIES CO LTD
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