B212 超音波を付与した微粒子懸濁液のミクロ凝固(融解・凝固)

元データ 2006-11-23 社団法人日本機械学会


Solidification of liquid-fine particle suspension in an ultrasonic standing wave has been studied. In this paper, we propose a new manufacture method of composite materials by the following process: first, an array of solid particles in the melt is produced by radiation force of ultrasound, and next the matrix is fixed by the solidification. By freezing experiments using water-alumina/silica particle suspensions, it was found that the liquid region consists of a region, in which particles suspended in water were trapped and agglomerated at every half wavelength in the standing-wave field, and a transitional layer. In the transitional layer, some of particles were swept from freezing front and accumulated with air bubbles. The micro-behavior in this place controls the appearance of lamellar structure.


多田 幸生 金沢大学
多田 幸生 金沢大
義岡 秀晃 富山商船高等専門学校商船学科
八賀 正司 富山商船高等専門学校商船学科
山田 健太郎 富山商船高専
多田 幸生 金沢大学理工研究域機械工学系
義岡 秀晃 富山商船高専
八賀 正司 富山高専