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Mechanical, microstructural and magnetic properties of the bulk BSCCO superconductor prepared by two different methods

机译:通过两种不同方法制备的BSCCO块状超导体的机械,微观结构和磁性

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摘要

BSCCO bulk samples have been prepared by solid-state reaction and ammonium nitrate precipitation methods with Bi_(1.65)Pb_(0.35)Sr_2Ca_2Cu_3O_(10±y) stoichiometry. Structural, mechanical and magnetic characterizations of the samples were performed by the X-ray powder diffraction (XRD), the scanning electron microscopy (SEM), Microhardness measurements, AC susceptibility measurements. The XRD patterns showed that the diffraction peaks for our samples belong to the two main phase, namely 2223 and 2212 of the BSCCO. In this study we have focused on microhardness measurements to investigate the mechanical properties. Vickers microhardness, Young's modulus and yield strength values were calculated separately for all samples. In addition to these, we calculated the load independent hardness values of samples. Experimental results of hardness measurements were analyzed using the Meyer's law, proportional sample resistance (PSR) model, Elastic-Plastic deformation model (EPD) and indentation induced cracking (IIC) model. The critical transition temperature, phase purity, lattice parameter, surface morphology and crystallinity of the prepared bulk samples were compared with each other.
机译:通过固相反应和硝酸铵沉淀法以Bi_(1.65)Pb_(0.35)Sr_2Ca_2Cu_3O_(10±y)化学计量法制备了BSCCO块状样品。通过X射线粉末衍射(XRD),扫描电子显微镜(SEM),显微硬度测量,交流磁化率测量对样品进行结构,机械和磁性表征。 X射线衍射图谱表明,我们样品的衍射峰属于BSCCO的两个主要相,即2223和2212。在这项研究中,我们专注于显微硬度测量以研究机械性能。对于所有样品,分别计算维氏显微硬度,杨氏模量和屈服强度值。除此之外,我们还计算了样品的独立于负荷的硬度值。使用迈耶定律,比例样品电阻(PSR)模型,弹塑性变形模型(EPD)和压痕诱发裂纹(IIC)模型分析了硬度测量的实验结果。将制备的块状样品的临界转变温度,相纯度,晶格参数,表面形态和结晶度进行了比较。

著录项

  • 来源
    《Journal of materials science》 |2015年第4期|2622-2628|共7页
  • 作者单位

    Faculty of Science, Department of Physics, Ankara University, Ankara, Turkey,Center of Excellence for Superconductivity Research, Ankara University, Ankara, Turkey;

    Faculty of Science, Department of Physics, Ankara University, Ankara, Turkey,Center of Excellence for Superconductivity Research, Ankara University, Ankara, Turkey;

    Faculty of Science, Department of Physics, Ankara University, Ankara, Turkey,Center of Excellence for Superconductivity Research, Ankara University, Ankara, Turkey;

    Faculty of Science, Department of Physics, Ankara University, Ankara, Turkey,Center of Excellence for Superconductivity Research, Ankara University, Ankara, Turkey;

    Center of Excellence for Superconductivity Research, Ankara University, Ankara, Turkey;

    Department of Physics, Kastamonu University, Kastamonu, Turkey;

    Department of Physics, Kastamonu University, Kastamonu, Turkey;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 13:45:21

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