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稀土Y對(duì)Co43Fe20Ta5.5B31.5合金的非晶形成能力及性能的影響
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甘肅省教育廳開放基金(0503-08)


Effect of the Rare Earth Element Y on Glass-Forming Ability and Properties of Co43Fe20Ta5.5B31.5 Alloy
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    摘要:

    采用單輥甩帶和銅模吹鑄法，制備了(Co43Fe20Ta5.5B31.5)100-xYx（x=0.5, 1, 1.5, 2, 2.5, 3）合金薄帶及φ2 mm的圓棒。X射線衍射及差熱掃描量熱分析表明：當(dāng)x=3時(shí)合金具有最大的玻璃形成能力，可以很容易地制備出φ2 mm的非晶圓棒。該成分合金的約化玻璃轉(zhuǎn)變溫度Trg＝0.657，參數(shù)γ＝0.436，在所研究的系列成分中是最大的，這說明Trg和γ能夠很好地表征Co-Fe-Ta-B合金的玻璃形成能力。壓縮試驗(yàn)和磁滯回線測(cè)試表明，Y的添加導(dǎo)致Co-Fe-Ta-B非晶合金的壓縮斷裂強(qiáng)度和軟磁性能急劇下降。φ2 mm的(Co43Fe20Ta5.5B31.5)97Y3非晶圓棒的壓縮斷裂強(qiáng)度為1852 MPa，斷裂應(yīng)變?yōu)?.18%。與Co43Fe20Ta5.5B31.5非晶合金相比，(Co43Fe20Ta5.5B31.5)97Y3非晶合金的磁滯回線上存在約327×79.6 A/m的矯頑力，同時(shí)飽和磁感應(yīng)強(qiáng)度也顯著下降。

    Abstract:

    The (Co43Fe20Ta5.5B31.5)100-xYx（x=0.5, 1, 1.5, 2, 2.5, 3）amorphous ribbons and rods of 2 mm diameters were prepared by melt spinning and copper mold blow- casting method. The analysis of XRD and DSC test indicated that the rod amorphous of 2 mm diameter was easily prepared owing to the alloy (x=3) which the value of x is 3 with maximum glass forming ability. Because the value of the reduced glass transition temperature (Trg) and γ of (Co43Fe20Ta5.5B31.5)97Y3 alloy were 0.657 and 0.436 respectively, which were maximum in the series chemical composition investigated, the glass forming ability of Co-Fe-Ta-B alloy was assessed by Trg and γ.The results of compression test and hysteresis loops showed that the compressive fracture strength and soft magnetic property of the Co-Fe-Ta-B amorphous alloy decreased dramatically when Y was added. The compressive fracture strength and the fracture strain of (Co43Fe20Ta5.5B31.5)97Y3 amorphous rods of 2 mm diameter were 1852 MPa and 0.18%, respectively. Compared with Co43Fe20Ta5.5B31.5, the coercivity Hc was 327×79.6 A/m in the hysteresis loops of the (Co43Fe20Ta5.5B31.5)97Y3 amorphous alloy, at the same time, the saturation magnetic flux density decreased distinctly.

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袁子洲,張大鵬,陸 葉,包石磊,佟亞東.稀土Y對(duì)Co43Fe20Ta5.5B31.5合金的非晶形成能力及性能的影響[J].稀有金屬材料與工程,2009,38(1):138~142.[Yuan Zizhou, Zhang Dapeng, Lu Ye, Bao Shilei, Tong Yadong. Effect of the Rare Earth Element Y on Glass-Forming Ability and Properties of Co43Fe20Ta5.5B31.5 Alloy[J]. Rare Metal Materials and Engineering,2009,38(1):138~142.]
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  • 收稿日期:2008-01-19
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