论文摘要
采用真空电弧熔炼和放电等离子烧结技术制备了half-Heusler合金CoCrAl,利用XRD对合金的物相结构进行表征,借助相关设备测试了合金的饱和磁矩及Seebeck系数,并将实验结果与分别基于C1b有序、XY及YZ无序结构的CoCrAl合金的模拟计算值进行比较。结果表明,所制CoCrAl合金样品中除了完全有序的C1b结构相外还存在XY及YZ无序相。合金样品表现出典型的磁性金属特性且其Seebeck系数（绝对值）随着温度的升高呈先增加后降低的趋势,这与利用VASP和BoltzTraP软件包结合计算得到的CoCrAl合金的Seebeck系数随温度（300～800K）的变化趋势相符合。
论文目录
文章来源
类型: 期刊论文
作者: 李春蓉,卢志红,王文静,尹航
关键词: 原子无序,合金,热电性能,电子结构,系数
来源: 武汉科技大学学报 2019年03期
年度: 2019
分类: 工程科技Ⅰ辑,工程科技Ⅱ辑
专业: 金属学及金属工艺,机械工业
单位: 武汉科技大学省部共建耐火材料与冶金国家重点实验室
基金: 国家自然科学基金资助项目(11574242)
分类号: TG146.16
页码: 182-186
总页数: 5
文件大小: 811K
下载量: 47
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