Reduction-resistant nickel electrode ceramic dielectric material

Abstract

The invention discloses a reduction-resistant nickel electrode ceramic dielectric material, which consists of the following components in mole percentage: 88 to 96 mol percent of main crystalline phase of BaTiO3, 2.59 to 8.59 mol percent of modified additive and 1 to 5.6 mol percent of glass flux, wherein the main crystalline phase is synthesized by mixing 60 to 70 mol percent of BaO and 30 to 40mol percent of TiO2; the modified additive is one or more of Nb2O5, Dy2O3, MnO, MgO, CaO, and Y2O3; and the glass flux is one or more of SiO2, ZnO, Li2O and BaO. The material is low in production cost, high in environmental friendliness, small in powder particles, uniform in size distribution, high in dispersibility and good in casting effect; and multiplayer ceramic chip capacitors (MLCC) prepared from the material have good electrical property.

Description

technical field

[0001] The invention relates to a ceramic dielectric material for a multilayer chip ceramic capacitor MLCC, in particular to an anti-reduction nickel electrode ceramic dielectric material. Background technique

[0002] The traditional MLCC production method is generally completed in two steps. The first step is to purchase BT and small materials from downstream manufacturers, mix BT and small materials in a certain proportion, and go through fine-tuning of components→ball milling→drying treatment→powdering treatment→sieving treatment , after packaging, the required X7R porcelain powder is obtained. The production process of X7R porcelain powder takes one month; the second step is to purchase X7R porcelain powder from upstream manufacturers, add adhesives, solvents, and plasticizers to the porcelain powder, and make pulp →Casting→Silk printing→Lamination→Cutting→Sintering→Encapping→Electroplating process to make MLCC. Such production costs are high. Content...

Examples

Embodiment

[0017] An anti-reduction nickel electrode ceramic dielectric material and a new MLCC manufacturing method thereof, in Table 1 No. 1 to No. 16 material formulations, BT can pass through BaO and TiO 2 Obtained by sintering synthesis, various small materials, namely glass components and modified additives) can be purchased directly, using the new technology of BT+ small materials, that is, MLCC direct batching method (mixing BT, glass components and modified additives to make casting slurry The material is cast, and the MLCC is cast to 20um. When these anti-reduction nickel electrode ceramic dielectric materials are used to make MLCC products by conventional methods, the sintering temperature is 1270 ° C ~ 1290 ° C, and the 0603B103K specification products are made. After making MLCCs, At room temperature of 25°C, use HP4278 to test capacitor capacity and loss at 1MHz, 1.0V (AC); use SF2512 fast insulation machine, apply 100V DC rated voltage for 10 seconds, and test insulation re...

technical field

[0001] The invention relates to a ceramic dielectric material for a multilayer chip ceramic capacitor MLCC, in particular to an anti-reduction nickel electrode ceramic dielectric material. Background technique

[0002] The traditional MLCC production method is generally completed in two steps. The first step is to purchase BT and small materials from downstream manufacturers, mix BT and small materials in a certain proportion, and go through fine-tuning of components→ball milling→drying treatment→powdering treatment→sieving treatment , after packaging, the required X7R porcelain powder is obtained. The production process of X7R porcelain powder takes one month; the second step is to purchase X7R porcelain powder from upstream manufacturers, add adhesives, solvents, and plasticizers to the porcelain powder, and make pulp →Casting→Silk printing→Lamination→Cutting→Sintering→Encapping→Electroplating process to make MLCC. Such production costs are high. Content...

Examples

Embodiment

[0017] An anti-reduction nickel electrode ceramic dielectric material and a new MLCC manufacturing method thereof, in Table 1 No. 1 to No. 16 material formulations, BT can pass through BaO and TiO 2 Obtained by sintering synthesis, various small materials, namely glass components and modified additives) can be purchased directly, using the new technology of BT+ small materials, that is, MLCC direct batching method (mixing BT, glass components and modified additives to make casting slurry The material is cast, and the MLCC is cast to 20um. When these anti-reduction nickel electrode ceramic dielectric materials are used to make MLCC products by conventional methods, the sintering temperature is 1270 ° C ~ 1290 ° C, and the 0603B103K specification products are made. After making MLCCs, At room temperature of 25°C, use HP4278 to test capacitor capacity and loss at 1MHz, 1.0V (AC); use SF2512 fast insulation machine, apply 100V DC rated voltage for 10 seconds, and test insulation re...

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