Method of manufacturing amorphous magnetic alloy ribbon and use for magnetostriction delay lines
AssigneeSony Corporation
InventorsYoshimi Makino, Yoshitaka Ochiai, Koichi Aso, Satoru Uedaira, Masatoshi Hayakawa, Kazuhide Hotai
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Abstract
The amorphous magnetic alloy ribbon for magnetostriction delay lines are prepared by annealing the ribbon having a negative magnetostriction constant at a temperature lower than the crystallization temperature of the alloy under a tension sufficiently enough to support the ribbon substantially straight between the both ends thereof. The ribbon thus prepared permits a decrease in a deviation in a distribution of internal stresses and the propagation speeds of magnetostriction vibration through the ribbon.
Claims6
A method of manufacturing an amorphous magnetic alloy ribbon for a magnetostriction delay line comprising the steps of:
- providing an amorphous magnetic alloy ribbon having a negative magnetostriction constant;
- annealing said ribbon at a temperature lower than the crystallization temperature of said alloy under a tension enough to keep said ribbon substantially straight between the both ends thereof;
- cooling said ribbon to room temperature to produce an amorphous magnetic alloy ribbon having a uniform propagation speed of magnetostrictive vibration through said ribbon;
- and
- inserting the resulting ribbon into a magnetostriction delay line.
Dependencies are inferred from the claim text.