Magnetic and mechanical properties of amorphous alloys by pulse high current
US4950337A · kind A · utility
23Cited by
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4Claims
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Key dates
| Filing date | Apr 14, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Apr 14, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/1211
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A heating process of improving the magnetic and mechanical properties of ferromagnetic amorphous alloys wherein the amorphous ribbon is treated with rapid heating and rapid magnetic domain impacting in a direct heating manner by means of pulsed high current to improve the magnetism of ferromagnetic amorphous alloys with reduced or eliminated the annealing embrittlement thereof. The heating process is performed in the following conditions: PA0 pulse current density: J.gtoreq.10.sup.3 A/cm.sup.2 PA0 pulse duration: tp=1 ns-100 ms PA0 frequency: f=1 Hz-1,000 Hz PA0 heating time: tn=1 sec.-100 secs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.