Pressure sensor ceramic material and preparation method thereof
US12339192B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2021 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Mar 29, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/449
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A pressure sensor ceramic material and a preparation method thereof, comprising: nano ceramic particles with a molecular formula CaCu3-xMxTi4-yScyO12, wherein: 0<x≤1, 0.2≤y≤0.8, glass-phase nano-oxide particles with a molecular formula A2O3, AlN, BeO, poly (methyl methacrylate) (PMMA), polycrystalline diamond powder, microfiltration membrane polymer, and dimethylformamide. The diamond powder coated with 10 μm to 20 μm of the sub-micron layer doped AlN and BeO prepared by the present disclosure can reduce the defect of uniform and isotropic crystal structure caused by gradient modification of CaCu3-xMxTi4-yScyO12 by A2O3 glass-phase nano-oxide, reduces the stress concentration of the resulting pressure sensor ceramic material against impact and avoids the defect that the cross-section bonding degree decreases due to the grain boundary movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.