Method for increasing the strength and density of lead titanate ceramic bodies
US4131444A · kind A · utility
4Cited by
6References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 25, 1977 |
| Grant date | Dec 26, 1978 |
| Priority date | — |
| Expiry date | Aug 25, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/472
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Strengthened and densified ceramic bodies are produced by hot pressing lead itanate powder into a lead titanate ceramic at a pressure from 1000 to 5000 psi and at a temperature from 700 to 1100.degree. C if the atmosphere is reducing or from 700 to 1200.degree. C if the atmosphere is oxidizing and by annealing the lead titanate ceramic at a temperature from 600 to 1100.degree. C in an oxidizing atmosphere for at least four hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.