Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1979-04-04
1980-09-09
Rutledge, L. Dewayne
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
148 3155, 148121, H01F 100
Patent
active
042216150
ABSTRACT:
A technique for producing a non-corrosive platinum-cobalt product having high wear resistance and soft magnetic properties as well as a specular surface. In this technique, a platinum-cobalt composition is solutionized at a temperature above its order-disorder region for a predetermined period and then rapidly quenched to produce a stock piece whose atomic structure is in the disordered state and therefore possesses soft magnetic properties. The piece is then rough-machined to assume the shape of a ball or other product to be formed, the machining action working the outer layer of the rough product and imparting hard magnetic properties thereto. This product is then ground and polished to cause the product to assume its final dimensions and to remove the hard magnetic layer, thereby providing a finished, soft-magnetic product whose surface has specular characteristics and a high order of wear resistance.
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Ebert Michael
Fischer & Porter Company
Rutledge L. Dewayne
Sheehan John P.
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