| 新型Y-Fe-Co-B大块非晶合金的制备与磁性能研究 |
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| 引用本文： | 盛建锋,冯海波,于荣海.新型Y-Fe-Co-B大块非晶合金的制备与磁性能研究[J].稀有金属材料与工程,2007,36(6):1078-1081. |
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| 作者姓名： | 盛建锋 冯海波 于荣海 |
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| 作者单位： | 清华大学,先进材料教育部重点实验室,北京,100084 |
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| 基金项目： | 国家高技术研究发展计划(863计划);国家自然科学基金 |
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| 摘 要： | 用水冷铜模吸铸方法制备了最大截面直径为2mm的Y6Fe60.5Co11.5B22铁基大块非晶合金，研究了冷却速率对合金磁性能的影响，分析并计算了合金的临界冷却速率。大块Y6Fe6.5Co11.5B22非晶合金具有良好的软磁性能：其矫顽力Hc=2．53A／m，饱和磁化强度Ms=1．24T，初始磁化率明显高于相同成分的晶态合金。热稳定性分析表明，该合金具有较高的非晶形成能力，其形成非晶的临界冷却速率（Rc）约为119K／s。
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| 关 键 词： | 大块非晶合金 临界冷却速率 矫顽力 |
| 文章编号： | 1002-185X（2007）06-04-1078 |
| 修稿时间： | 2006-06-132007-03-20 |
Fabrication and Magnetic Properties of Y-Fe-Co-B Bulk Metallic Glasses |
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| Sheng Jianfeng,Feng Haibo,Yu Ronghai.Fabrication and Magnetic Properties of Y-Fe-Co-B Bulk Metallic Glasses[J].Rare Metal Materials and Engineering,2007,36(6):1078-1081. |
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| Authors: | Sheng Jianfeng Feng Haibo Yu Ronghai |
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| Affiliation: | Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | A new Y6Fe60.5Co11.5B22 Fe-based bulk metallic glass with a maximum diameter of 2 mm has been fabricated by suction casting method in a water-cooled copper mould. The interrelationship between cooling rates and magnetic properties were investigated and the critical cooling rate of the amorphous alloy was calculated. The bulk amorphous alloy has a coercivity of 2.53 A/m,a saturated magnetization of 1.24 T,and a high initial susceptibility. The critical cooling rate (Rc) of the Y6Fe60.5Co11.5B22 amorphous alloy was determined to be about 119 K/s. |
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| Keywords: | bulk metallic glasses (BMGs) critical cooling rate coercivity |
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