Method for producing magnetostrictive element and sintering method
US7138019B2 · kind B2 · utility
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2References
13Claims
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Key dates
| Filing date | Jul 26, 2004 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Jan 1, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N35/85
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In the step of sintering a compact that is finally to be a magnetostrictive element, when the temperature in a furnace is elevated, the atmosphere in the furnace is evacuated by a vacuum pump to keep the pressure in the furnace at negative pressure in a temperature range that allows thermal decomposition of hydride present in the compact to release hydrogen gas to accelerate release of hydrogen from the compact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.