Effect of Sintering Temperature on the Microstrutcure and Magnetic Properties of Fe-6.5%Si Alloy Fabricated by Metal Injection Molding

被引：7

作者：

Choi, Dae Yeob ^{[1
]}

Syarif, Husein ^{[1
]}

Shin, Dong Hyuk ^{[2
]}

Ko, Young Gun ^{[1
]}

机构：

[1] Yeungnam Univ, Sch Mat Sci & Engn, Kyongsan 712749, South Korea

[2] Hanyang Univ, Dept Met & Mat Engn, Ansan 426791, South Korea

来源：

KOREAN JOURNAL OF METALS AND MATERIALS | 2013年 / 51卷 / 02期

关键词：

metals; sintering; metal injection molding; magnetic properties; scanning electron microscopy; GRAIN-SIZE; DIFFUSION; BEHAVIOR; STEEL; MICROSTRUCTURE; MECHANISMS;

D O I：

10.3365/KJMM.2013.51.2.105

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present work demonstrated the influence of sintering temperature on the microstructure and magnetic properties of Fe-6.5%Si alloys fabricated via metal injection molding. The samples were sintered in an Ar atmosphere at three different temperatures, 1100, 1200, and 1300 degrees C. Microstructural observations of the sintered sample revealed that, with increasing sintering temperature, the average grain size of the ferrite phase increased, while the fraction of the micro pore decreased. These results were attributed to the increasing mobility of the grain boundaries. The hysteresis curves showed that the magnetic properties of the sintered samples as a soft magnet were enhanced with increasing sintering temperature since the saturation magnetization increased and the coercivity decreased, reaching the values of 1.22 tesla and 1.84 kA/m at 1300 degrees C. Moreover, the values of the magnetic hysteresis loss in the sintered samples gradually decreased with increasing sintering temperature due to both the fairly high densification and coarse grain size of the sintered sample.

引用

页码：105 / 111

页数：7

共 26 条

[1]

Bobrova S. N., 1998, POWDER METALL MET C, V37, P9

[2] Axial fatigue behavior of binder-treated versus diffusion alloyed powder metallurgy steels [J].

Chawla, N ;

Murphy, TF ;

Narasimhan, KS ;

Koopman, M ;

Chawla, KK .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 308 (1-2) :180-188

[3] Microstructure and soft magnetic properties of nanocrystalline Fe-Si powders [J].

Ding, J ;

Li, Y ;

Chen, LF ;

Deng, CR ;

Shi, Y ;

Chow, YS ;

Gang, TB .

JOURNAL OF ALLOYS AND COMPOUNDS, 2001, 314 (1-2) :262-267

[4] Study on the Sintering Behavior and Microstructure Development of the Powder Injection Molded T42 High-speed Steel [J].

Do, Kyoung-Rok ;

Choi, Sung-Hyun ;

Kwon, Young-Sam ;

Park, Dong-Wook ;

Cho, Kwon-Koo ;

Ahn, In-Shup .

METALS AND MATERIALS INTERNATIONAL, 2011, 17 (06) :937-942

[5] CALCULATION OF DIFFUSION PENETRATION CURVES FOR SURFACE AND GRAIN BOUNDARY DIFFUSION [J].

FISHER, JC .

JOURNAL OF APPLIED PHYSICS, 1951, 22 (01) :74-77

[6] Improvement of magnetic properties of an Fe-6.5 wt.% Si alloy by directional solidification [J].

Fu, Huadong ;

Zhang, Zhihao ;

Jiang, Yanbin ;

Xie, Jianxin .

MATERIALS LETTERS, 2011, 65 (09) :1416-1419

[7] SIMULATION OF SPHERICAL POWDER SINTERING BY SURFACE-DIFFUSION [J].

GERMAN, RM ;

LATHROP, JF .

JOURNAL OF MATERIALS SCIENCE, 1978, 13 (05) :921-929

[8]

Jang P. W., 2010, J MAGN, V20, P1

[9]

Joo D. W., 1992, J KOREAN INST MET MA, V30, P12

[10] Magnetic properties evaluation of spray formed and rolled Fe-6.5 wt.% Si-1.0 wt.% Al alloy [J].

Kasama, A. H. ;

Bolfarini, C. ;

Kiminami, C. S. ;

Botta Filho, W. J. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 449 (375-377) :375-377

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