Preparation of positive magnetostrictive materials for use under tension
US7479193B1 · kind B1 · utility
23Cited by
4References
3Claims
0Family size
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Key dates
| Filing date | Feb 11, 2005 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Jun 16, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N35/85
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive magnetostrictive material such as a ferromagnetic alloy is subjected to a magnetic field during annealing treatment while being heated for a predetermined period of time at an elevated temperature below its softening temperature followed by cooling resulting in a treated ferromagnetic material having high tensile strength and positive magnetostriction properties for enhancing use thereof under tensile loading conditions. Such treatment of the ferromagnetic alloy may be augmented by application thereto of a compressive stress.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.