Base metal inner electrode multi-layer ceramic wafer type capacitor medium material prepared by chemical coating of water system
A technology of metals and metal salts, applied in the direction of fixed capacitor dielectrics, laminated capacitors, fixed capacitor parts, etc., can solve the problem of dielectric constant reduction and achieve the effects of small dielectric loss, stable performance, and strong reliability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0070] Example 1. Preparation of ceramic powder (i.e. uniformly coated barium titanate powder)
[0071] The barium titanate powder (crystal size of 120nm) was ball milled with water and auxiliary dispersant for 12 hours to obtain a barium titanate suspension; according to the barium titanate (BaTiO 3 ) And the coating layer composite oxide (CL) 96:4 and Y:Ce:Mn:Mg:Si:Ca=4:2:3:12:5:2 (both in molar ratio), weigh the corresponding weight The soluble salt and ethyl orthosilicate are prepared by the chemical coating method provided by the present invention to prepare a suspension of coated barium titanate particles, and the coated barium titanate powder is obtained after drying. After the obtained powder is heat-treated at 550°C for 2 hours, it is sieved to obtain the desired ceramic powder. The ceramic powder is composed of a core and a shell; the core is barium titanate powder, and the shell is made of Y 2 O 3 , Ce 2 O 3 , MnO 2 , MgO, SiO 2 A nano-coating layer formed by a composi...
Example Embodiment
[0072] Example 2. Preparation of ceramic powder (i.e. uniformly coated barium titanate powder) and its dielectric properties test
[0073] The coated barium titanate powder is prepared by the chemical coating method of the present invention (3 groups are prepared, each group is 500g), wherein the selected barium titanate powder has a grain size of 150 nm, and the composite oxide coating layer The molar ratio of each element is Y:Ce:Mn:Mg:Si:Ca=4:3:3:12:4:2. Barium titanate (BaTiO 3 The molar ratio of) to the clad composite oxide (CL) is 95:5.
[0074] After pressing the ceramic powder into a disc, in N 2 / H 2 (30:1, v / v) under reducing atmosphere, sintering at 1200℃ for 2h, and then annealing at 1050℃ for 2h under weak oxidation conditions. The surface of the sample is covered with a silver electrode for electrical performance test. The dielectric performance parameters are shown in Table 1. figure 2 This is the characteristic curve of the dielectric constant of sample 1 in this ...
Example Embodiment
[0077] Example 3 Preparation of ceramic powder (i.e. uniformly coated barium titanate powder) and its dielectric properties test
[0078] The coated barium titanate powder is prepared by the chemical coating method of the present invention, and barium titanate powder with an average initial particle size of 80 nanometers is selected to coat oxide layers of different element types and contents, and various coating layers The ingredients are shown in Table 2. The total content of various oxides accounts for 3-10 mol% of the total material, as shown in Table 3.
[0079] After the porcelain is pressed into a disc, 2 / H 2 (35:1, v / v) under reducing atmosphere, sintering at 1150~1250℃ for 2~3h, and then annealing at 1050℃ for 3h under weak oxidation condition. The surface of the sample is covered with a silver electrode for electrical performance testing. The dielectric performance parameters are shown in Table 3.
[0080] Table 2
[0081] Coating number
[0082] Coating number
[0...
PUM
Property | Measurement | Unit |
---|---|---|
Thickness | aaaaa | aaaaa |
Average grain size | aaaaa | aaaaa |
Insulation resistivity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap