In situ Formation of Amorphous-Core/Crystalline-Shell Composite Powder in Liquid Immiscible Fe-Si-B-Cu System

Xingjun Liu; Jiahua Zhu; Yan Yu; Jinbin Zhang; Shuiyuan Yang; Cuiping Wang

In situ Formation of Amorphous-Core/Crystalline-Shell Composite Powder in Liquid Immiscible Fe-Si-B-Cu System

Xingjun Liu
, Jiahua Zhu
, Yan Yu
, Jinbin Zhang
, Shuiyuan Yang
, Cuiping Wang^*

^*Corresponding author for this work

Xiamen University
Harbin Institute of Technology (Shenzhen)

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Based on the CALPHAD (Calculated of Phase Diagrams) approach, micro-scale amorphous/crystalline composite powders of (Fe_0.75Si_0.1B_0.15)_100-xCu_x(x = 30, 45, 55, 65, at%) with core/shell microstructure were designed and successfully fabricated by using the gas atomization method. The obtained gas-atomized powder exhibits a Fe-Si-B-rich amorphous-core/Cu-rich crystalline-shell composite microstructure. Results indicate that the coercive force of the composite powders is almost the same as that of Fe₇₅Si₁₀B₁₅ amorphous powder, but their saturation magnetization decreases with increasing Cu concentration. The formation mechanism of such amorphous-core/crystalline-shell composite powders is originated from the occurrence of liquid phase separation at high temperature and the different glass-forming ability (GFA) of the two separated liquids (Cu-rich and FeSiB-rich) during the rapid solidification process.

Translated title of the contribution	Fe-Si-B-Cu体系中原位析出非晶/晶体复合粉末的制备与性能研究
Original language	English
Pages (from-to)	109-115
Number of pages	7
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	49
Issue number	1
State	Published - 1 Jan 2020
Externally published	Yes

Keywords

Amorphous alloy
CALPHAD approach
Composites
Liquid phase separation
Microstructures

Cite this

@article{dcc4918e3109489d810b778d96cb8ac5,

title = "In situ Formation of Amorphous-Core/Crystalline-Shell Composite Powder in Liquid Immiscible Fe-Si-B-Cu System",

abstract = "Based on the CALPHAD (Calculated of Phase Diagrams) approach, micro-scale amorphous/crystalline composite powders of (Fe0.75Si0.1B0.15)100-xCux(x = 30, 45, 55, 65, at\%) with core/shell microstructure were designed and successfully fabricated by using the gas atomization method. The obtained gas-atomized powder exhibits a Fe-Si-B-rich amorphous-core/Cu-rich crystalline-shell composite microstructure. Results indicate that the coercive force of the composite powders is almost the same as that of Fe75Si10B15 amorphous powder, but their saturation magnetization decreases with increasing Cu concentration. The formation mechanism of such amorphous-core/crystalline-shell composite powders is originated from the occurrence of liquid phase separation at high temperature and the different glass-forming ability (GFA) of the two separated liquids (Cu-rich and FeSiB-rich) during the rapid solidification process.",

keywords = "Amorphous alloy, CALPHAD approach, Composites, Liquid phase separation, Microstructures",

author = "Xingjun Liu and Jiahua Zhu and Yan Yu and Jinbin Zhang and Shuiyuan Yang and Cuiping Wang",

year = "2020",

month = jan,

day = "1",

language = "英语",

volume = "49",

pages = "109--115",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

publisher = "Science Press ",

number = "1",

}

TY - JOUR

T1 - In situ Formation of Amorphous-Core/Crystalline-Shell Composite Powder in Liquid Immiscible Fe-Si-B-Cu System

AU - Liu, Xingjun

AU - Zhu, Jiahua

AU - Yu, Yan

AU - Zhang, Jinbin

AU - Yang, Shuiyuan

AU - Wang, Cuiping

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Based on the CALPHAD (Calculated of Phase Diagrams) approach, micro-scale amorphous/crystalline composite powders of (Fe0.75Si0.1B0.15)100-xCux(x = 30, 45, 55, 65, at%) with core/shell microstructure were designed and successfully fabricated by using the gas atomization method. The obtained gas-atomized powder exhibits a Fe-Si-B-rich amorphous-core/Cu-rich crystalline-shell composite microstructure. Results indicate that the coercive force of the composite powders is almost the same as that of Fe75Si10B15 amorphous powder, but their saturation magnetization decreases with increasing Cu concentration. The formation mechanism of such amorphous-core/crystalline-shell composite powders is originated from the occurrence of liquid phase separation at high temperature and the different glass-forming ability (GFA) of the two separated liquids (Cu-rich and FeSiB-rich) during the rapid solidification process.

AB - Based on the CALPHAD (Calculated of Phase Diagrams) approach, micro-scale amorphous/crystalline composite powders of (Fe0.75Si0.1B0.15)100-xCux(x = 30, 45, 55, 65, at%) with core/shell microstructure were designed and successfully fabricated by using the gas atomization method. The obtained gas-atomized powder exhibits a Fe-Si-B-rich amorphous-core/Cu-rich crystalline-shell composite microstructure. Results indicate that the coercive force of the composite powders is almost the same as that of Fe75Si10B15 amorphous powder, but their saturation magnetization decreases with increasing Cu concentration. The formation mechanism of such amorphous-core/crystalline-shell composite powders is originated from the occurrence of liquid phase separation at high temperature and the different glass-forming ability (GFA) of the two separated liquids (Cu-rich and FeSiB-rich) during the rapid solidification process.

KW - Amorphous alloy

KW - CALPHAD approach

KW - Composites

KW - Liquid phase separation

KW - Microstructures

UR - https://www.scopus.com/pages/publications/85083816050

M3 - 文章

AN - SCOPUS:85083816050

SN - 1002-185X

VL - 49

SP - 109

EP - 115

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 1

ER -

In situ Formation of Amorphous-Core/Crystalline-Shell Composite Powder in Liquid Immiscible Fe-Si-B-Cu System

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Keywords

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