Pronounced enhancement of glass-forming ability of Fe-Si-B-P bulk metallic glass in oxygen atmosphere

被引：27

作者：

Chang, Chuntao ^{[1
]}

Zhang, Jianhua ^{[2
]}

Shen, Baolong ^{[3
]}

Wang, Weihua ^{[4
]}

Inoue, Akihisa ^{[5
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Zhejiang, Peoples R China

[2] Taiyuan Univ Technol, Coll Elect & Power Engn, Shanxi Key Lab Coal Min Equipment & Safety Contro, Taiyuan 030024, Shanxi, Peoples R China

[3] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China

[4] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[5] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH | 2014年 / 29卷 / 10期

基金：

中国国家自然科学基金;

关键词：

MAGNETIC-PROPERTIES; ADDITIONS; WATER; LARGER; IRON;

D O I：

10.1557/jmr.2014.96

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is widely accepted that oxygen will severely deteriorate the glass-forming ability (GFA) of an alloy. In this work, we report that the GFA of a Fe76Si9B10P5 glassy alloy can be significantly improved (the critical diameter for fully glass formation is increased from 1 to 3 mm) under oxygen casting atmosphere. Furthermore, the pressure of oxygen atmosphere gives an obvious enhancement in the critical diameter of Fe76Si9B10P5 glassy alloy. A dependence of GFA on casting atmosphere species (argon, nitrogen, air, and oxygen) is also observed for this glassy alloy, and its critical diameter is 1, 1.5, 2.5, and 3 mm, respectively. In addition, the Fe-based glassy alloy exhibits excellent soft magnetic properties regardless of the applied casting atmosphere. The mechanism for such an unusual oxygen effect on the GFA of Fe76Si9B10P5 glassy alloy is attributed to the reduced nucleation rate caused by the enhancement of surface tension of the alloy melt.

引用

页码：1217 / 1222

页数：6

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