Bulk ferromagnetic glasses prepared by flux melting and water quenching
Bulk ferromagnetic glasses prepared by flux melting and water quenching
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DOI：
10.1063/1.124273
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发表时间：
1999-06
影响因子：
4
通讯作者：
T. Shen;R. Schwarz
中科院分区：
文献类型：
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作者：
T. Shen;R. Schwarz
几种Fe-(Co，Cr，Mo，Ga，Sb)-P-B-C铁磁性大块非晶合金，含量在62到71At之间。%Fe，以4 mm直径棒材的形式制备。玻璃合成包括机械合金化成分，在熔融石英管内的B_2O_3熔剂中净化熔体，以约100K/S的冷却速度冷却熔体，所有这些玻璃都有一个很大的过冷区Tx−Tg，范围从35~61K，在这个区域内，玻璃可以在相对较小的外加载荷下成形。结果表明，Tx、−、Tg的大小与类金属成分密切相关。这些大块金属玻璃具有很低的矫顽力和低的磁滞损耗。
Several ferromagnetic bulk amorphous alloys of the type Fe–(Co, Cr, Mo, Ga, Sb)–P–B–C, containing between 62 and 71 at. % Fe, have been prepared in the form of 4-mm-diam rods. The glass synthesis consists of mechanically alloying the constituents, purifying the melts in B2O3 flux inside fused silica tubes, and quenching the melts at cooling rates on the order of 100 K/s. All these glasses have a large supercooled region Tx−Tg, ranging from 35 to 61 K, within which the glass can be shaped under a relatively small applied load. It is shown that the value of Tx−Tg depends strongly on the metalloid composition. These bulk metallic glasses have very low coercivity and low hysteresis losses.