EFFECT OF ULTRASONIC VIBRATIONS ON THE CRYSTALLIZATION AND PROPERTIES OF ALLOYS,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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An investigation was made of the action of vibrations of USF, on the process of crystallization on the triple semiconductor alloys Bi2Te3-Bi2Se3 and St2Te3 -Bi2Te3. Study of the macro- and microstructure of the sonicated alloys, proves the possibility of obtaining ingots with finecrystalline structure, and more uniformity in physical properties, than under ordinary conditions of casting. The specimens tested for microhardness and measurement of their electrical properties, show that the sonication of the fused mass, considerably heightens the microhardness and strength of the aloloys, and does not change their electrical properties as compared with alloys obtained by the ordinary procedure. The action of the oscillations of SSF, on the process of crystallization of thermoelectric alloys, as a new method of obtaining thermoelements gave positive results, and requires further development.