Recycling of multi-grain, melt processed bulk (RE)BCO superconductors
Recycling of multi-grain, melt processed bulk (RE)BCO superconductors
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DOI：
10.1088/0953-2048/23/6/065012
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发表时间：
2010-06
影响因子：
3.6
通讯作者：
Sandeep Kumar Pathak;N. H. Babu;A. Dennis;K. Iida;M. Strasik;D. Cardwell
中科院分区：
文献类型：
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作者：
Sandeep Kumar Pathak;N. H. Babu;A. Dennis;K. Iida;M. Strasik;D. Cardwell
回收是可持续和经济利用自然资源的基础。散装RE - ba - cu - o （(RE)BCO，其中RE是稀土元素或Y）可用于各种可持续工程和电力部门应用。然而，目前的生产成本和高达30%的相对较高的工艺故障率严重限制了这些材料用于工业用途的制造。因此，有必要开发一种有效的回收废（RE）BCO散装样品的方法，以降低生产成本和稀土元素的消耗。熔体处理过的失败样品的化学成分与前体粉末中最初使用的样品不同，因此通常被废弃，而不是重新加工。我们报告了一种新的方法来重新处理失效（RE）BCO样品，以恢复其化学成分。使用该工艺回收的失败体样品显示出与传统顶部种子熔体生长制备的单粒样品相当的超导性能。
Recycling is fundamental to the sustainable and economic use of natural resources. Bulk RE–Ba–Cu–O ((RE)BCO, where RE is a rare earth element or Y) can be used for variety of sustainable engineering and power sector applications. However, current costs of production and relatively high process failure rates of up to 30% severely limit the manufacture of these materials for industrial use. It is necessary, therefore, to develop an effective way of recycling failed (RE)BCO bulk samples to reduce both production costs and the consumption of the constituent rare earth elements. Failed, melt processed samples have a different chemical composition to that used initially in the precursor powder and, as a result, are generally scrapped, rather than re-processed. We report a novel method for re-processing failed (RE)BCO samples to restore their chemical composition. Failed bulk samples recycled using this process exhibit superconducting properties that are comparable to those of single-grain samples fabricated by conventional top seeded melt growth.