标题：Role of tri-capped triangular prism (TTP) polyhedra in formation and destabilization of Fe-Y-B glassy alloys
作者：Ma, H. J.; Shen, K. C.; Pan, S. P.; Zhao, J.; Qin, J. Y.; Kim, K. B.; Wang, W. M.
作者机构：[Ma, H. J.; Shen, K. C.; Pan, S. P.; Qin, J. Y.; Wang, W. M.] Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Peoples R Ch 更多
通讯作者地址：[Wang, WM]Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Peoples R China.
来源：JOURNAL OF NON-CRYSTALLINE SOLIDS
关键词：Fe-based glass; Corrosion; Polyhedron; AIMD
摘要：Since the structural characterization of Fe-based disordered system is less than other metallic glasses, we investigate the Fe76-2xY4+xB2O4+x (X = 0 and 2) glasses and melts via the variation of tri-capped triangular prism (TM) polyhedron with changing the composition. B-centered clusters mainly appear in the manner of UP polyhedron in both alloys, which is strengthened by increasing yttrium and boron contents (c(Y) and c(B)) and considered as the network/backbone in the Fe-based glassy alloys. Increasing c(Y) and C-B improves the onset temperature of the first crystallization event with decreasing its activation energy, deteriorates the corrosion resistance of present alloys in NaCI and H2SO4 solutions, and triggers the formation of nanoscale network structure. These experimental results can be ascribed to the strengthened network/backbone in the alloys. (C) 2015 Elsevier B.V. All rights reserved.