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Preparation method of nano composite ytrium barium copper oxide superconducting bulks
The invention discloses a preparation method of nano composite ytrium barium copper oxide superconducting bulks, which comprises the steps of preparing solid phase powder, preparing liquid phase source powder, pressing precursor bulks, assembling the precursor bulks, carrying out infiltrated growth on nano composite ytrium barium copper oxide single-domain bulks, and carrying out oxygen permeation treatment. By taking a mixture of Y2O3 nano powder, BaCuO2 precursor powder and CeO2 initial powder as solid phase powder, after high-temperature infiltration and slowly-cooled growth are performed, nanoscale Y2BaCuO5 particles are successfully introduced into ytrium barium copper oxide superconducting bulks, so that higher superconducing properties are obtained. By taking a mixture of Yb2O3, and BaO, CuO initial powder as liquid phase source powder, the whole infiltrated growth process is implemented by only using BaCuO2 precursor powder, so that the method is simple in process and high in efficiency. The invention also can be used for preparing nano composite superconducting materials of Nd, Sm and Gd series and the like.
Preparation method of nano composite ytrium barium copper oxide superconducting bulks
The invention discloses a preparation method of nano composite ytrium barium copper oxide superconducting bulks, which comprises the steps of preparing solid phase powder, preparing liquid phase source powder, pressing precursor bulks, assembling the precursor bulks, carrying out infiltrated growth on nano composite ytrium barium copper oxide single-domain bulks, and carrying out oxygen permeation treatment. By taking a mixture of Y2O3 nano powder, BaCuO2 precursor powder and CeO2 initial powder as solid phase powder, after high-temperature infiltration and slowly-cooled growth are performed, nanoscale Y2BaCuO5 particles are successfully introduced into ytrium barium copper oxide superconducting bulks, so that higher superconducing properties are obtained. By taking a mixture of Yb2O3, and BaO, CuO initial powder as liquid phase source powder, the whole infiltrated growth process is implemented by only using BaCuO2 precursor powder, so that the method is simple in process and high in efficiency. The invention also can be used for preparing nano composite superconducting materials of Nd, Sm and Gd series and the like.
Preparation method of nano composite ytrium barium copper oxide superconducting bulks
LI GUOZHENG (Autor:in)
24.06.2015
Patent
Elektronische Ressource
Englisch
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