Microstructure of nitrate polycrystals solidified under ultrasonic vibration

Naoya Enomoto, Yasushi Iimura, Zenbe E. Nakagawa

研究成果: ジャーナルへの寄稿学術誌査読

13 被引用数 (Scopus)

抄録

Molten nitrates in the system (1 - x)NaNO3-xBa(NO3)2 were solidified in the presence of a power ultrasound of 20 kHz. Their microstructures were compared with those of controlled samples which were solidified normally. Grain size in the controlled sample of monolithic NaNO3 (x = 0) was reduced by sonication. In the hypo-(x = 8 wt. %) and the hypereutectic (x = 28 wt. %) binary samples, the sonication completely eliminated the dendritic structure of the primary crystals and induced equiaxed particles of the primary phase. At eutectic (x = 18 wt. %), the sonication removed oriented structures of the eutectic lamellae. Several mechanisms of the microstructural modification were mentioned.

本文言語英語
ページ(範囲)371-376
ページ数6
ジャーナルJournal of Materials Research
12
2
DOI
出版ステータス出版済み - 2月 1997
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 材料科学一般
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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