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Superconducting target material and preparation method and application thereof
The invention provides a preparation method of a superconducting target material, which comprises the following steps: mixing barium carbonate, copper oxide, yttrium oxide and a pore-forming agent, and carrying out first compression molding to obtain a green body; or mixing barium carbonate, copper oxide and yttrium oxide, and carrying out second compression molding to obtain a honeycomb-shaped green body; pre-sintering the green body or the honeycomb-shaped green body in an oxygen atmosphere, and crushing to obtain powder; and carrying out third compression molding and sintering on the powder to obtain the superconducting target material. A presintered block is prepared into a honeycomb shape, or a pore-forming agent is added, a porous structure is formed during presintering, the oxygen exchange area is increased, barium carbonate is fully decomposed into barium oxide and carbon dioxide, the barium oxide and carbon dioxide are converted into a Y1Ba2Cu3O7 phase, reversible reaction is effectively reduced, the proportion of a superconductive phase is increased, and by matching with subsequent compression molding and sintering, the superconductive performance of the superconductive material is improved. And the density of the superconducting target material is improved.
本发明提供了一种超导靶材的制备方法，包括以下步骤：将碳酸钡、氧化铜、氧化钇和造孔剂混合后进行第一压制成型，得到坯体；或者将碳酸钡、氧化铜和氧化钇混合后进行第二压制成型，得到蜂窝状坯体；将所述坯体或蜂窝状坯体在氧气气氛中进行预烧结后破碎，得到粉体；将所述粉体进行第三压制成型和烧结，得到超导靶材。本发明将预烧结的块体制备成蜂窝状，或者加入造孔剂，在预烧结时形成多孔结构，增加氧气交换面积，使碳酸钡充分分解成氧化钡和二氧化碳，转化为Y1Ba2Cu3O7相，有效降低了可逆反应的进行，提高了超导相比例，再配合后续的压制成型和烧结，提高了超导靶材的致密度。
Superconducting target material and preparation method and application thereof
The invention provides a preparation method of a superconducting target material, which comprises the following steps: mixing barium carbonate, copper oxide, yttrium oxide and a pore-forming agent, and carrying out first compression molding to obtain a green body; or mixing barium carbonate, copper oxide and yttrium oxide, and carrying out second compression molding to obtain a honeycomb-shaped green body; pre-sintering the green body or the honeycomb-shaped green body in an oxygen atmosphere, and crushing to obtain powder; and carrying out third compression molding and sintering on the powder to obtain the superconducting target material. A presintered block is prepared into a honeycomb shape, or a pore-forming agent is added, a porous structure is formed during presintering, the oxygen exchange area is increased, barium carbonate is fully decomposed into barium oxide and carbon dioxide, the barium oxide and carbon dioxide are converted into a Y1Ba2Cu3O7 phase, reversible reaction is effectively reduced, the proportion of a superconductive phase is increased, and by matching with subsequent compression molding and sintering, the superconductive performance of the superconductive material is improved. And the density of the superconducting target material is improved.
本发明提供了一种超导靶材的制备方法，包括以下步骤：将碳酸钡、氧化铜、氧化钇和造孔剂混合后进行第一压制成型，得到坯体；或者将碳酸钡、氧化铜和氧化钇混合后进行第二压制成型，得到蜂窝状坯体；将所述坯体或蜂窝状坯体在氧气气氛中进行预烧结后破碎，得到粉体；将所述粉体进行第三压制成型和烧结，得到超导靶材。本发明将预烧结的块体制备成蜂窝状，或者加入造孔剂，在预烧结时形成多孔结构，增加氧气交换面积，使碳酸钡充分分解成氧化钡和二氧化碳，转化为Y1Ba2Cu3O7相，有效降低了可逆反应的进行，提高了超导相比例，再配合后续的压制成型和烧结，提高了超导靶材的致密度。
Superconducting target material and preparation method and application thereof
一种超导靶材及其制备方法和应用
ZHONG BINGWEN (author) / CHEN JIA (author) / HOU QINGLONG (author) / WU RICHARD (author) / ZHANG KE (author) / CHEN QINZHONG (author)
2022-03-01
Patent
Electronic Resource
Chinese
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