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作 者:姚占全[1] 田晓[2] 郝宏波[3] 张光睿[3] 吴双霞[3] 江丽萍[3] 赵增祺[3]
机构地区:[1]内蒙古农业大学,内蒙古呼和浩特010018 [2]内蒙古师范大学功能材料物理与化学自治区重点实验室,内蒙古呼和浩特010022 [3]包头稀土研究院,内蒙古包头014030
出 处:《稀有金属材料与工程》2016年第7期1777-1781,共5页Rare Metal Materials and Engineering
基 金:国家自然科学基金(51461001);内蒙古自然科学基金(2014MS0540;2014MS0542);内蒙古自治区高等学校科学研究项目(NJZY14082);内蒙古大学高层次人才基金项目(115304)
摘 要:为改善多晶Fe-Ga合金的磁致伸缩性能,在Fe-Ga合金中掺杂稀土Ce、Tb和Dy元素。研究了Fe_(83)Ga_(17)和Fe_(83)Ga_(17)R_(0.6)(R=Ce,Tb,Dy)合金的相结构和磁致伸缩性能。结果表明,Fe_(83)Ga_(17)合金由单一bcc结构Fe(Ga)固溶体相组成,而掺杂稀土后的Fe_(83)Ga_(17)R_(0.6)合金中除保持bcc结构的Fe(Ga)固溶体相外,还出现了R_2Fe_(17)第二相。掺杂稀土后的Fe_(83)Ga_(17)R_(0.6)合金磁致伸缩系数明显大于Fe_(83)Ga_(17)合金。掺杂不同种类的稀土元素对Fe-Ga合金磁致伸缩性能改善的程度不同。在外磁场为557 k A/m时,Fe_(83)Ga_(17)R_(0.6)合金的磁致伸缩系数(206×10^(-6))明显大于Fe_(83)Ga_(17)Tb_(0.6)(165×10^(-6))和FFe_(83)Ga_(17)Dy_(0.6)(161×10^(-6))合金的磁致伸缩系数。In order to improve magnetostrictive properties of the polycrystalline Fe-Ga alloys,rare earth elements Ce,Tb and Dy were doped into Fe-Ga alloys.The microstructures and magnetostrictions of Fe_(83)Ga_(17) and Fe_(83)Ga_(17)R_(0.6)(R=Ce,Tb,Dy) alloys were studied.The results indicate that Fe_(83)Ga_(17) alloy consists of a single Fe(Ga) solid solution phase with bcc structure.However,the Fe_(83)Ga_(17)R_(0.6)(R=Ce,Tb,Dy) alloys are composed of the Fe(Ga) solid solution phase and a small amount of R_2Fe_(17) secondary phase.The magnetostriction coefficients of the Fe_(83)Ga_(17)R_(0.6)(R=Ce,Tb,Dy) alloys are significantly larger than that of the Fe_(83)Ga_(17) alloy.The improvement degree of magnetostrictive properties of Fe-Ga alloy varies with different rare earth elements doped into the alloy.The magnetostriction coefficient of Fe_(83)Ga_(17)Ce_(0.6) alloy(206×10^-6) is larger than that of the Fe_(83)Ga_(17)Tb_(0.6)(165×10^-6) and Fe_(83)Ga_(17)Dy_(0.6)(161×10^-6) at the magnetic field of 557 k A/m.
分 类 号:TG132.27[一般工业技术—材料科学与工程]
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