Low temperature co-fired ceramic powder and special raw material and use thereof
US8298971B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2008 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Aug 16, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/1209
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a ceramic powder and special raw material and use thereof. The raw material of the ceramic powder comprises 20-80 mass parts of SiO2, 10-50 mass parts of AlF3 and 0-30 mass parts of regulator. The raw material for preparing the ceramic powder is mixed and crushed, followed by melted into liquid glass at 1200-1400° C., quenched to obtain the ceramic powder. The low temperature co-fired ceramic powder has the following advantages: low sintering temperature (750-850° C.) and controllable sintering shrinkage rate; the dielectric constant of the ceramic block prepared with the ceramic powder is adjustable between 4.5 and 10 (1 MHz), the dielectric loss is less than 0.002, the mechanical strength is high and the preparation process is simple. The ceramic powder may be used for electric devices such as ceramic substrate, resonator, etc. as well as in other microelectronic packaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.