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Cu2Se-doped MgB2 bulk material and preparation method thereof
The invention relates to a Cu2Se-doped MgB2 bulk material. The superconducting material is prepared by mixing boron powder, magnesium powder and a Cu2Se dopant and carrying out solid-phase sintering. The invention further relates to a preparation method of the Cu2Se-doped MgB2 block material, which comprises the following specific steps: preparing raw materials: magnesium powder with the purity of 99.9% and the particle size of 40 microns; the purity of the amorphous boron powder is 99%, the particle size of the amorphous boron powder is 0-20 microns, the purity of the cuprous selenide powder is 99.5%, the molar ratio of the boron powder to the magnesium powder is 2: 1, and the mass of the dopant cuprous selenide powder accounts for 5-30% of the weight of the whole powder; the preparation method comprises the following steps: weighing raw materials in proportion, and fully grinding powder for 1 hour through an agate bowl to form uniformly mixed powder; the obtained evenly mixed powder is put into a mold and pressed into a block material, and the pressure intensity is 6-10 MPa; and putting the block material into a ceramic ark, and carrying out high-temperature sintering in a vacuum tube furnace in which inert gas Ar flows. According to the Cu2Se-doped MgB2 bulk material and the preparation method thereof, the current-carrying performance of an MgB2 superconductor is effectively improved.
本发明涉及一种Cu2Se掺杂的MgB2块材，该超导材料由硼粉、镁粉和Cu2Se掺杂物混合经固相烧结制备而得。本发明还涉及一种Cu2Se掺杂的MgB2块材制备方法，具体步骤为：原料准备：镁粉，纯度99.9％，粒径40μm；无定形硼粉，纯度99％，粒径0～20μm，硒化亚铜粉末，纯度99.5％，其中所述硼粉和镁粉的摩尔比为2:1，所述掺杂物硒化亚铜粉末的质量占整体粉末重量的5％～30％；按比例称取原料，通过玛瑙钵将粉末充分研磨1h，形成均匀混合粉末；将得到的均匀混合粉末装入模具中，压制成块材，压强为6～10MPa；将块材放入陶瓷方舟在惰性气体Ar流通的真空管式炉进行高温烧结。本发明的Cu2Se掺杂的MgB2块材及其制备方法有效改善MgB2超导体的载流性能。
Cu2Se-doped MgB2 bulk material and preparation method thereof
The invention relates to a Cu2Se-doped MgB2 bulk material. The superconducting material is prepared by mixing boron powder, magnesium powder and a Cu2Se dopant and carrying out solid-phase sintering. The invention further relates to a preparation method of the Cu2Se-doped MgB2 block material, which comprises the following specific steps: preparing raw materials: magnesium powder with the purity of 99.9% and the particle size of 40 microns; the purity of the amorphous boron powder is 99%, the particle size of the amorphous boron powder is 0-20 microns, the purity of the cuprous selenide powder is 99.5%, the molar ratio of the boron powder to the magnesium powder is 2: 1, and the mass of the dopant cuprous selenide powder accounts for 5-30% of the weight of the whole powder; the preparation method comprises the following steps: weighing raw materials in proportion, and fully grinding powder for 1 hour through an agate bowl to form uniformly mixed powder; the obtained evenly mixed powder is put into a mold and pressed into a block material, and the pressure intensity is 6-10 MPa; and putting the block material into a ceramic ark, and carrying out high-temperature sintering in a vacuum tube furnace in which inert gas Ar flows. According to the Cu2Se-doped MgB2 bulk material and the preparation method thereof, the current-carrying performance of an MgB2 superconductor is effectively improved.
本发明涉及一种Cu2Se掺杂的MgB2块材，该超导材料由硼粉、镁粉和Cu2Se掺杂物混合经固相烧结制备而得。本发明还涉及一种Cu2Se掺杂的MgB2块材制备方法，具体步骤为：原料准备：镁粉，纯度99.9％，粒径40μm；无定形硼粉，纯度99％，粒径0～20μm，硒化亚铜粉末，纯度99.5％，其中所述硼粉和镁粉的摩尔比为2:1，所述掺杂物硒化亚铜粉末的质量占整体粉末重量的5％～30％；按比例称取原料，通过玛瑙钵将粉末充分研磨1h，形成均匀混合粉末；将得到的均匀混合粉末装入模具中，压制成块材，压强为6～10MPa；将块材放入陶瓷方舟在惰性气体Ar流通的真空管式炉进行高温烧结。本发明的Cu2Se掺杂的MgB2块材及其制备方法有效改善MgB2超导体的载流性能。
Cu2Se-doped MgB2 bulk material and preparation method thereof
一种Cu2Se掺杂的MgB2块材及其制备方法
ZHAO QIAN (author) / CHEN YUN (author) / HU CHUNHAO (author) / XIA GUOQING (author) / MA SHILONG (author) / FAN SHAOFENG (author) / ZHANG JIABO (author)
2024-04-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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