Phase separation and nanocrystallization behavior above crystallization temperature in Mg-Cu-Y metallic glass thin film

被引：7

作者：

Wu, G. ^{[1
,2
]}

Tang, Q. H. ^{[2
]}

Yu, N. N. ^{[1
,2
]}

Miao, X. S. ^{[1
,2
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China

来源：

THIN SOLID FILMS | 2013年 / 545卷

关键词：

Metallic glass; Thin films; Magnetron sputtering; Phase separation; Crystallization; SUPERCOOLED LIQUID; AMORPHOUS-ALLOYS; STRENGTH;

D O I：

10.1016/j.tsf.2013.06.092

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mg-Cu-Y metallic glass thin films were deposited by magnetron sputtering. Mg58Cu29Y13 metallic glass thin film has a large supercooled liquid region (Delta T-X = 57.0 K) and a smooth surface (R-a = 0.485 nm). The phase separation and nanocrystallization properties of it were investigated. Scanning electron microscope observation and energy disperse spectrum analysis in the single line scan transmission electron microscope test show phase separation in the Mg58Cu29Y13 metallic glass thin film annealed slightly above glass transition temperature for 1 min. Transmission electron microscope studies show 10 nm diameter nanocrystals in the fully crystallized specimen. The crystallization behavior of it is very different from that of bulk metallic glasses. The nanocrystals structure in the film above crystallization temperature is attributed to the high nucleation rate and low nucleus growth rate in the crystallization process. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：38 / 43

页数：6

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