کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1818772 | 1525756 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanical characterization of melt-textured Y0.95Er0.05Ba2Cu3O7âδ superconductor prepared in air
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effect of Er substitution on the mechanical properties of ab- and a(b)c-planes of melt-textured YBa2Cu3O7âδ is reported in the present work. The non-oxygenated samples were characterized by scanning electron microscopy, X-ray diffraction and mechanical properties by instrumented indentation and conventional Vickers indentation whereas the superconducting properties were determined by resistivity measurements on oxygenated samples. The X-ray pattern and EDS analysis revealed the presence of Y-123, Y-211 and BaCeO3 phases. Er substitution up to 5 wt.% did not affect the superconducting properties. No difference in hardness was observed for the ab- and a(b)c-planes. Elastic modulus of the a(b)c-plane was 10% higher than of the ab-plane. Differences in indentation fracture toughness obtained by conventional Vickers indentation of the ab- and a(b)c-planes was observed. The addition of 5 wt.% of Er did not affect significantly the mechanical properties of melt-textured samples when compared with pure melt-textured YBa2Cu3O7âδ.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 470, Issues 11â12, 1 June 2010, Pages 465-469
Journal: Physica C: Superconductivity - Volume 470, Issues 11â12, 1 June 2010, Pages 465-469
نویسندگان
Lincoln Brum de Leite Gusmão Pinheiro, Alcione Roberto Jurelo, Francisco Carlos Serbena, Pedro Jr., Carlos Eugênio Foerster, Adilson Luiz Chinelatto,