| (Gd-Tb)AlCo非晶合金的形成能力与低温磁性 |
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| 引用本文： | 马丽利,李然,逄淑杰,马朝利,张涛.(Gd-Tb)AlCo非晶合金的形成能力与低温磁性[J].稀有金属材料与工程,2008(Z4). |
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| 作者姓名： | 马丽利 李然 逄淑杰 马朝利 张涛 |
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| 作者单位： | 北京航空航天大学; |
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| 基金项目： | 国家自然科学基金项目(50631010和50771006); 长江学者创新团队发展计划(IRT0512)资助 |
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| 摘 要： | 经验表明具有某些相似特性的元素共存可以明显提高合金的玻璃形成能力。据此研究了原子尺寸相近的稀土元素Gd-Tb共存的(Gd-Tb)-Al-Co系列合金。利用铜模铸造法对合金的玻璃形成能力进行了研究,并采用X射线衍射和差示扫描量热法分别对合金的结构及热稳定进行了研究。结果表明,Gd-Tb共存的确提高了合金的玻璃形成能力。(Gd-Tb)-Al-Co合金非晶形成临界直径可达5mm,玻璃形成能力最好的成分位于共晶点附近。在低温磁性能研究中(Gd-Tb)-Al-Co非晶合金表现出明显的自旋玻璃态行为。
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| 关 键 词： | 非晶合金 非晶形成能力 稀土金属元素 |
Glass-Forming Ability and Magnetic Properties at Low Temperature of (Gd-Tb)-Al-Co Bulk Metallic Glasses |
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| Ma Lili,Li Ran,Pang Shujie,Ma Chaoli,Zhang Tao.Glass-Forming Ability and Magnetic Properties at Low Temperature of (Gd-Tb)-Al-Co Bulk Metallic Glasses[J].Rare Metal Materials and Engineering,2008(Z4). |
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| Authors: | Ma Lili Li Ran Pang Shujie Ma Chaoli Zhang Tao |
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| Affiliation: | Ma Lili,Li Ran,Pang Shujie,Ma Chaoli,Zhang Tao (Behang University,Beijing,100083,China) |
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| Abstract: | The glass-forming region and ability in (Gd-Tb)-Al-Co system were evaluated in detail. The liquidus analysis based on melting and solidification curves measured by differential scanning calorimeter reveal that eutectic and off-eutectic compositions have a tight relationship with the high glass-forming composition region. (Gd0.5Tb0.5)55Al25Co20, with the highest glass-forming ability, lied at the off-eutectic point and the side of steep liquidus line. The fully glass rods of this alloy can be produced up to ... |
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| Keywords: | metallic glasses rare earth glass-forming ability |
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