Effect of B addition on the microstructure and magnetic properties of melt-spun Sm12Co60−xFe19Cu6Zr3Bx (0≤x≤3) ribbons

Sun, Ji-Bing; Javed, Anam; Zhang, Zhexu; Cui, Chunxiang; Zhang, Miaoxin; Rui-ping, Han

doi:10.1016/j.mseb.2010.01.053

Cited by 11 publications

(2 citation statements)

References 31 publications

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“…Thus, many researchers are focusing on the doping modification of amorphous alloy system in existence and developing new amorphous alloy system. The B addition improves the glass-forming ability [6] and increases the stability of Fe 52 Co 34 Hf 7 B 6 Cu 1 alloys [7].…”

Section: Introductionmentioning

confidence: 99%

Influences of the Adding Manners of b on the Stability and the Soft Magnetic Properties of Amorphous Fe52Co34Hf7B6Cu1 Alloys

Chao

2013

AMM

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The stability and the soft magnetic properties of amorphous Fe52Co34Hf7B6Cu1 alloys have been investigated in this paper. Amorphous Fe52Co34Hf7B6Cu1 alloys ribbons are prepared by single-roller-quenching method. The differential thermal analysis (DTA), X-ray diffraction (XRD), Mössbauer Spectroscopy, transmission electron microscope (TEM) and vibrating sample magnetometer (VSM) were used for characterizing microstructures, soft magnetic properties, and evaluating the influence of adding manners of B on the stability of as-quenched specimens. The XRD curve shows a wide dispersion of peak, the TEM diffraction ring was dispersed cyclic, the pattern of the matrix was homogeneous, and the Mössbauer spectrum of as-quenched alloy presents a typical broadened and overlapped sextet, which confirms the as-quenched alloy in fully amorphous state. The DTA results showed the activation energy of Fe52Co34Hf7B6Cu1 alloy is 299.7KJ/mol. When pure B is replaced by FeB in preparing amorphous Fe52Co34Hf7B6Cu1 alloys, the activation energy reduced to 293.3 KJ/mol,and the soft magnetic property is decline according VSM results.

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Section: Introductionmentioning

confidence: 99%

Influences of the Adding Manners of b on the Stability and the Soft Magnetic Properties of Amorphous Fe52Co34Hf7B6Cu1 Alloys

Chao

2013

AMM

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“…These alloys are typical of bulk precipitation hardened Sm-Co magnets, but the addition of B and the different synthesis process leads to a different microstructure. Many other groups have focused on this direction [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. In our series, the samples with boron content of 4 at.…”

Section: Introductionmentioning

confidence: 99%

Structural and magnetic properties of Sm(Co0.7Fe0.1Ni0.12Zr0.04B0.04)7.5 melt spun isotropic and anisotropic ribbons

Makridis

Tang

2012

Journal of Rare Earths

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Abstract. We have investigated the structural and magnetic properties of Sm(Co 0.7 Fe 0.1 Ni 0.12 Zr 0.04 B 0.04 ) 7.5 melt spun ribbons. Samples were arc melted then melt spun at 37 m/s up to 55 m/s to obtain ribbon for powdering. Annealing has been performed in argon atmosphere for (30 to 75) min at (600 to 870) o C. In as-spun ribbons the hexagonal SmCo 7 (TbCu 7 -type of structure) of crystal structure has been determined from x-ray diffraction patterns, while fccCo has been identified as a secondary phase. After annealing, the 1:7 phase of the as-spun ribbons transforms into 2:17 and 1:5 phases. X-ray patterns for as-milled powders exhibit very broad peaks making it difficult to identify a precise structure but represent the 1:7 structure after annealing at low temperature (650 o C). TEM analysis shows a homogeneous nanocrystalline microstructure with average grain size of (30 to 80) nm. Coercivity values of (15 to 27) kOe are obtained from hysteresis loops traced up to a field of 5 T. The coercivity decreases as temperature increases, but it maintains values higher than 5 kOe at 380 o C. The maximum energy product at room temperature increases, as high as 7.2 MGOe, for melt-spun isotropic ribbons produced at higher wheel speeds. Anisotropic ribbons have a maximum energy product close to 12 MGOe.

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Crystal structures and magnetic performance of nanocrystalline Sm-Co compounds

Song

Zhang

et al. 2012

Front. Mater. Sci.

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Effect of B addition on the microstructure and magnetic properties of melt-spun Sm12Co60−xFe19Cu6Zr3Bx (0≤x≤3) ribbons

Cited by 11 publications

References 31 publications

Influences of the Adding Manners of b on the Stability and the Soft Magnetic Properties of Amorphous Fe<sub>52</sub>Co<sub>34</sub>Hf<sub>7</sub>B<sub>6</sub>Cu<sub>1</sub> Alloys

Influences of the Adding Manners of b on the Stability and the Soft Magnetic Properties of Amorphous Fe<sub>52</sub>Co<sub>34</sub>Hf<sub>7</sub>B<sub>6</sub>Cu<sub>1</sub> Alloys

Structural and magnetic properties of Sm(Co0.7Fe0.1Ni0.12Zr0.04B0.04)7.5 melt spun isotropic and anisotropic ribbons

Crystal structures and magnetic performance of nanocrystalline Sm-Co compounds

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