結晶-ガラス-結晶相転移 の履歴(No.6)



照射誘起アモルファス化 (高速電子照射)照射誘起結晶化 (高速電子照射)

結晶-アモルファス-結晶相転移

photo
photo

A unique disordering-ordering phase transition, i.e., a crystalline-to-amorphous-to-crystalline (C-A-C) transition [1,2] and quasi-crystal-to-amorphous-to-crystal (Q-A-C) [3] was found in some intermetallic compounds under MeV electron irradiation using HVEM: a new crystalline phase with a crystal structure different from the original intermetallic compound (quashi crystal) appears from an amorphous phase, which is formed by SSA of the compound (quashi crystal).

REFERENCES
[1] W. Sinkler, D.E. Luzzi, C.W. Allen, Scr. Metall. 28, 863-868 (1993).
[2] T. Nagase, Y. Umakoshi: Scripta Mater. 48, 1237-1242 (2003)., http://dx.doi.org/10.1016/S1359-6462(03)00056-3
[3] T. Nagase, T. Hosokawa and Y. Umakoshi: Intermetallics, 14, 1027-1032 (2006)., http://dx.doi.org/10.1016/j.intermet.2006.01.021
[4] T. Nagase, A. Nino, T. Hosokawa, Y. Umakoshi: Mater. Trans. 48, 1651-1658 (2007)., http://www.jim.or.jp/journal/e/48/07/1651.html


トップ   新規 一覧 検索 最終更新   ヘルプ   最終更新のRSS