"Method for preparing Pb-.beta.""-alumina ceramic"
US4585635A · kind A · utility
1Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1984 |
| Grant date | Apr 29, 1986 |
| Priority date | — |
| Expiry date | Aug 30, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M6/185
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is disclosed for preparing impermeable, polycrystalline samples of Pb-.beta."-alumina ceramic from Na-.beta."-alumina ceramic by ion exchange. The process comprises two steps. The first step is a high-temperature vapor phase exchange of Na by K, followed by substitution of Pb for K by immersing the sample in a molten Pb salt bath. The result is a polycrystalline Pb-.beta."-alumina ceramic that is substantially crack-free.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.