Process for metal fibers
AssigneeMinnesota Mining and Manufacturing Company
InventorRobin E. Wright
Life of this patent
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Abstract
A slurry comprises a ferromagnetic fiber having an aspect ratio of 10 to 10,000 and an organic liquid medium that is unreactive with the metal fibers. The metal fibers are provided by preparing a mixture comprising a thermally unstable metal complex compound, comprising at least one ferromagnetic metal, in a liquid medium, applying energy to said mixture in the presence of an externally applied magnetic field to decompose said complex compound, and isolating the deposited metal fibers. Articles are provided by the impregnation of metal fibers of the invention into and onto a porous substrate.
Claims33
A process comprising the steps:
- (a) preparing a mixture comprising a labile ligand stabilized zerovalent metal complex wherein said complex comprises at least one ferromagnetic metal and at least one ligand selected from the group consisting of unsaturated aliphatic compounds, aromatic compounds, and organic solvents, all of which are capable of forming labile solvated zerovalent metal complexes, and an organic liquid medium, and
- (b) applying energy to said mixture in the presence of an externally applied magnetic field to decompose said complex and provide a slurry of ferromagnetic metal fibers dispersed in said organic liquid medium.
A process comprising the steps
- (a) preparing a mixture comprising a labile ligand stabilized zerovalent metal complex wherein said complex comprises at least one ferromagnetic metal and at least one ligand selected from the group consisting of unsaturated aliphatic compounds, aromatic compounds, and organic solvents, all of which are capable of forming labile solvated zerovalent metal complexes, and an organic liquid medium, said mixture further comprising at least one substrate, which is unreactive with said liquid medium and said metallic complex, and
- (b) applying energy to said mixture in the presence of an externally applied magnetic field to decompose said complex and provide ferromagnetic metal fibers in and on said substrate.
Dependencies are inferred from the claim text.