Isolating nanophase amorphous magnetic metals
US5520717A · kind A · utility
17Cited by
3References
9Claims
0Family size
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Key dates
| Filing date | Jun 7, 1995 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/845
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Sonochemistry permits extremely rapid cooling from the melt which is necessary for forming amorphous metals. Sonochemistry also functions at an extremely small scale to produce nanophase particles. If magnetic, these particles are valuable for magnetic recording media, manufacture of permanent magnets, and other uses. The nanophase particles agglomerate, however, which limits their utility for these magnetic applications. To keep the particles isolated, we extract the particles from the n-alkane reaction solvent in a polar solvent and cast the extracted particles with a polymer, such as polyvinylpyrrolidone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.