Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
122 type iron-based superconductor and preparation method thereof
The invention belongs to the technical field of superconductors, and provides a 122 type iron-based superconductor and a preparation method thereof. According to the preparation method provided by the invention, the 122 type iron-based superconductor is Ba0. 6K0. 4Fe2As2, and the preparation method comprises the following steps: mixing an iron elementary substance and a first arsenic elementary substance, and sequentially carrying out first ball milling and first sintering to obtain a Fe2As blank; and mixing the Fe2As blank, a barium elementary substance, a potassium elementary substance and a second arsenic elementary substance, and sequentially carrying out second ball milling, pressing and second sintering to obtain Ba0.6K0.4Fe2As2. Before the Ba0. 6K0. 4Fe2As2 main phase is formed, the iron element with a high melting point and low chemical activity and a component element arsenic form chemical bonds to form a pre-reacted Fe2As intermediate product, so that iron particles are refined, the iron component is purified, the distribution uniformity of the iron component in a final superconductor is greatly improved, and the practical performance of the iron-based superconducting wire strip is further improved.
本发明属于超导体技术领域，提供了一种122型铁基超导体及其制备方法。本发明提供的制备方法，所述122型铁基超导体为Ba0.6K0.4Fe2As2，包括以下步骤：将铁单质和第一砷单质混合，依次进行第一球磨和第一烧结，得到Fe2As胚体；将所述Fe2As胚体、钡单质、钾单质和第二砷单质混合，依次进行第二球磨、压制和第二烧结，得到Ba0.6K0.4Fe2As2。本发明在形成Ba0.6K0.4Fe2As2主相前将熔点高、化学活性不高的铁元素与一组分元素砷成化学键，形成预反应的Fe2As中间产物，从而细化铁颗粒，纯化铁组分，并使其在最终的超导体中的分布均匀性大幅提高，进一步提高铁基超导线带材的实用性能。
122 type iron-based superconductor and preparation method thereof
The invention belongs to the technical field of superconductors, and provides a 122 type iron-based superconductor and a preparation method thereof. According to the preparation method provided by the invention, the 122 type iron-based superconductor is Ba0. 6K0. 4Fe2As2, and the preparation method comprises the following steps: mixing an iron elementary substance and a first arsenic elementary substance, and sequentially carrying out first ball milling and first sintering to obtain a Fe2As blank; and mixing the Fe2As blank, a barium elementary substance, a potassium elementary substance and a second arsenic elementary substance, and sequentially carrying out second ball milling, pressing and second sintering to obtain Ba0.6K0.4Fe2As2. Before the Ba0. 6K0. 4Fe2As2 main phase is formed, the iron element with a high melting point and low chemical activity and a component element arsenic form chemical bonds to form a pre-reacted Fe2As intermediate product, so that iron particles are refined, the iron component is purified, the distribution uniformity of the iron component in a final superconductor is greatly improved, and the practical performance of the iron-based superconducting wire strip is further improved.
本发明属于超导体技术领域，提供了一种122型铁基超导体及其制备方法。本发明提供的制备方法，所述122型铁基超导体为Ba0.6K0.4Fe2As2，包括以下步骤：将铁单质和第一砷单质混合，依次进行第一球磨和第一烧结，得到Fe2As胚体；将所述Fe2As胚体、钡单质、钾单质和第二砷单质混合，依次进行第二球磨、压制和第二烧结，得到Ba0.6K0.4Fe2As2。本发明在形成Ba0.6K0.4Fe2As2主相前将熔点高、化学活性不高的铁元素与一组分元素砷成化学键，形成预反应的Fe2As中间产物，从而细化铁颗粒，纯化铁组分，并使其在最终的超导体中的分布均匀性大幅提高，进一步提高铁基超导线带材的实用性能。
122 type iron-based superconductor and preparation method thereof
一种122型铁基超导体及其制备方法
TU CHANG (Autor:in) / DONG CHIHENG (Autor:in)
31.12.2021
Patent
Elektronische Ressource
Chinesisch
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