+Advanced Search
In situ formation of an amorphous-core/crystalline-shell composite powder in liquid immiscible Fe-Si-B-Cu system
Author:
Affiliation:

College of Materials and Fujian Provincial Key Laboratory of Materials Genome

Clc Number:

Fund Project:

National Natural Science Foundation of China (Grant Nos. 51471138 and 51771158 )

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    Based on the CALPHAD (Calculated of Phase Diagrams) approach, series 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 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.

    Reference
    Related
    Cited by
Get Citation

[Xingjun Liu, Jiahua Zhu, Yan Yu, Jinbin Zhang, Shuiyuan Yang, wangcuiping. In situ formation of an amorphous-core/crystalline-shell composite powder in liquid immiscible Fe-Si-B-Cu system[J]. Rare Metal Materials and Engineering,2020,49(1):109~115.]
DOI:10.12442/j. issn.1002-185X.20180875

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:August 16,2018
  • Revised:September 13,2018
  • Adopted:October 09,2018
  • Online: February 16,2020
  • Published: