Soft Magnetic Properties and Wide Supercooled Liquid Region of Fe&amp;ndash;P&amp;ndash;B&amp;ndash;Si Base Amorphous Alloys

Inoue, Akihisa; Park, Rae Eun

doi:10.2320/matertrans1989.37.1715

Cited by 70 publications

(27 citation statements)

References 11 publications

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“…[13][14][15][16]18) Here, H c , s , saturation magnetization (J s ) and ÁT x are the values for the melt-spun ribbons whose thickness of 20-35 mm. Table 2 shows the magnetic properties of the conventional Fe-(Co, Ni, Al, Ga)-(B, Si, C, P) amorphous alloys.…”

Section: Magnetic Properties Of Glassymentioning

confidence: 99%

“…Recently, some kinds of soft magnetic glassy alloys with large ÁT x combined with good soft magnetic properties have been synthesized in Fe-(Al, Ga)-(P, C, B, Si, Ge) [10][11][12][13][14][15][16][17][18][19][20][21] and Fe-(Co, Ni)-(Zr, Nb, Ta, Mo, W)-B systems. [22][23][24] The Fe-(Al, Ga)-(P, C, B, Si, Ge) glassy alloys have wide ÁT x of about 50 K and their maximum thickness to form a single glassy phase is about 220 mm prepared by the single-roller meltspinning method.…”

Section: Introductionmentioning

confidence: 99%

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Origin of Low Coercivity of Fe-(Al, Ga)-(P, C, B, Si, Ge) Bulk Glassy Alloys

2003

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The magnetic properties of the glassy Fe-(Al, Ga)-(P, C, B, Si, Ge) alloys have been compared with those of the conventional Fe-based amorphous alloys to clarify the feature of the glassy alloys as a soft magnetic material. The glassy Fe-(Al, Ga)-(P, C, B, Si, Ge) alloys exhibit lower saturation magnetization (J s ) than that of the conventional Fe-(B, Si, C) amorphous alloys with the same Fe content. The glassy alloys also have larger saturation magnetostriction constant ( s ) than that of the conventional Fe-based amorphous alloys with the same J s . However, the glassy alloys tend to show relatively low coercivity (H c ) whereas s is large. The theoretical analysis on the basis of domain-wall movement suggests that the low H c originates from the much higher packing density of the glassy alloys than that of the conventional amorphous alloys, which realizes the low density of the quasi-dislocation dipole-type elastic stress sources or the low pinning force due to the elastic stress. The good combination of high glass-forming ability and good soft magnetic properties (especially low H c ) indicates the possibility of future development as new low loss material.

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Section: Magnetic Properties Of Glassymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Origin of Low Coercivity of Fe-(Al, Ga)-(P, C, B, Si, Ge) Bulk Glassy Alloys

2003

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“…[1][2][3][4][5][6] These alloys have a GFA leading to the formation of BMG rods with diameters of mm-order prepared by Cu-mold casting with much lower cooling rates than that of melt-spinning used for the production of the Fe-metalloidbased amorphous alloy ribbons with a thickness of less than about 50 mm without glass transition. The development of BMGs overcame the great disadvantage of the melt-spun amorphous ribbons.…”

Section: Introductionmentioning

confidence: 99%

FeSiBP Bulk Metallic Glasses with Unusual Combination of High Magnetization and High Glass-Forming Ability

et al. 2007

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Among many kinds of bulk metallic glasses (BMGs), Fe-based BMGs with good magnetic properties, high strength and low materials cost should have great potential for wide variety of applications. However, the glass-forming metal elements such as Al, Ga, Nb, Mo, Y and so forth in the Fe-based BMGs significantly decrease saturation magnetization (J s ) which is a essential property as soft magnetic materials and also increase the material cost.The coexistence of high Fe content and high glass-forming ability (GFA) has been earnestly desired from academia to industry. We report a novel Fe 76 Si 9 B 10 P 5 (at%) bulk metallic glass with unusual combination of high J s of 1.51 T due to high Fe content and high GFA leading to a glassy rod with a diameter of 2.5 mm despite not-containing any glass-forming metal elements. This alloy composed of familiar and low-priced elements, also exhibiting very excellent magnetic softness and rather high strength, has a great advantage for engineering and industry, and thus should make a contribution to conservation of earth resources and environment through energy saving.

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“…30) As a comparison, the maximum permeability ( m ) of the Fe 78Àx Al x Sn 2 P 12 Si 4 B 4 (x ¼ 3$5 at%) amorphous alloys spans from 137000 to 208000, which are much better than the value 110000 reported for the Fe 70 Al 5 Ga 2 P 9:65 C 5:75 B 4:6 Si 3 alloy in a bulk amorphous ring shape form. 32) The electrical resistivity (), which is the higher the better for reduction of eddy current under an alternative magnetic field in transformer applications, increases linearly from 175 to 188 m-cm with increasing Al content in Fe 76Àx Al xSn 2 P 12 Si 4 B 4 alloys.…”

Section: Magnetic Propertiesmentioning

confidence: 80%

“…The improvement of thermal stability for Fe-P-B-Si alloys was thoroughly investigated earlier by Inoue et al 30) According to DSC curves of our amorphous alloys in Fig. 1, the single-stage crystallization mode also plays an important role for achieving high thermal stability and glass forming ability of the Fe-P-B-Si alloys as explored earlier.…”

Section: Structure and Thermal Propertiesmentioning

confidence: 99%

Effect of Al on Bulk Amorphization and Magnetic Properties of FeSnPSiB Alloys

et al. 2004

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Structure and magnetic properties of melt-spun multi-component Fe 78Àx Al x Sn 2 P 12 Si 4 B 4 (x ¼ 0, 3, 4, 5 at%) amorphous ribbons and copper-mold-cast rods were investigated. The improvement of thermal stability was recognized with the replacement of Fe by 3$5 at% Al in these Sn-containing alloys. The super-cooled liquid region (ÁT x ), defined by (T x À T g ) where T x is the crystallization temperature and T g the glass transition temperature, increases from 46.5 K as x ¼ 3 to the maximum value 50.2 K as x ¼ 4. With increasing Al content, magnetic properties of annealed Fe 78Àx Al x Sn 2 P 12 Si 4 B 4 (x ¼ 3$5 at%) amorphous ribbons are: saturation magnetization decreases from 1.22 to 1.18 T; coercive force decreases from 3.3 to 2.2 A/m, maximum permeability increases from 137000 to 208000, Curie temperature lowers from 591.1 K to 578.3 K; the electrical resistivity increases from 175 to 188 m-cm; and core loss is about 0.14 W/kg (50 Hz, 1.1 T external magnetic field). Bulk amorphous rods with 1 mm diameter were successfully demonstrated for the composition Fe 74 Al 4 Sn 2 P 12 Si 4 B 4 by a copper mold casting method. Due to the combination of good glass forming ability and superior soft magnetic properties, these alloys will find potential applications in industries.

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Soft Magnetic Properties and Wide Supercooled Liquid Region of Fe–P–B–Si Base Amorphous Alloys

Cited by 70 publications

References 11 publications

Origin of Low Coercivity of Fe-(Al, Ga)-(P, C, B, Si, Ge) Bulk Glassy Alloys

Origin of Low Coercivity of Fe-(Al, Ga)-(P, C, B, Si, Ge) Bulk Glassy Alloys

FeSiBP Bulk Metallic Glasses with Unusual Combination of High Magnetization and High Glass-Forming Ability

Effect of Al on Bulk Amorphization and Magnetic Properties of FeSnPSiB Alloys

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