還元鑞付け法によるフェライト磁わい振動子の接合とその音響振動法による評価

概要

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An ultrasonic equipment with magnetostrictive ferrite vibrator can supply an increased ultrasonic output power with increasing bonding-strength between ferrite vibrator and its water tank or its metallic horn, etc. For this purpose, a novel solder-jointing method is developed for a ferrite vibrator. In this method, a ferrite surface is reduced to a metallic state before soldering, using a titanium alloy power, so that soldering on it can be easily done. The bonding-strengh of this method for ferrite-to-ferrite boding is compared with that of adhering method with an epoxy-resin, using acousic vibration methods. It is found that the former is more thermally stable and more than twice as strong as the latter. In an ultrasonic radiation test into water, a ferrite vibrator solder-jointed by this method is found to work stably for 24 hours at 15 W/cm^2 corresponding to five times of power rating for commercial ferrite vibrators. These results indicate that this method can give far stronger bonding-strength than the usual epoxy-resin adhering method dose.
社団法人日本音響学会の論文
1983-08-01