Heraeus Gmbh

Carlos Chappa

Michael Bartholomeusz

Cobalt-based Ta-containing magnetic target alloy materials are produced in which homogeneity of the magnetic material is improved by eliminating Ta-rich second phases in the microstructure by a process comprising soaking ingots of said alloy from which targets are to be produced at temperatures ranging from 1600&deg; to 2600&deg; F. for periods of 10 minutes to 24 hours prior to hot-rolling, preferably using multiple steps, then hot-rolling at similar temperatures utilizing at least a 3% reduction for pass, and optionally soaking the rolled plates from said rolling step at temperatures ranging from 2000&deg; to 2600&deg; F. for periods of 10 minutes to 24 hours.

Growing community of inventors

Phx, AZ, United States of America

Carlos Chappa