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Wear Behavior of Flame Sprayed Nanostructured Titania Coatings.

机译：火焰喷涂的纳米结构二氧化钛涂层的磨损行为。

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摘要

Various pressures of compressed air were introduced into the flame spraying torch and the protective coatings of nanostructured and conventional titania (TiO2) were deposited on low carbon steel substrates. Performance of the coatings was studied using scanning electron microscopy (SEM), hardness measurement, porosity measurement and the best coating was selected for further analyses. A Nanostructured and conventional samples were exposed to ASTM G65 and C633 standard tests and the outcome was analyzed using confocal and electron microscopy. A nanostructured coating was found to outperform the conventional counterpart due to the presence of a bimodal microstructure, which increases the plastic deformation and crack resistance of the ceramic. The nanostructured coating was analyzed using X-Ray diffraction (XRD) and eventually its crack propagation resistance was quantified. The coating was also tested in a highly corrosive H2S environment and Energy-dispersive X-ray spectroscopy (EDX) verified its fair resistance against that environment.
机译：将各种压力的压缩空气引入火焰喷枪，并在低碳钢基材上沉积纳米结构和常规二氧化钛（TiO2）的保护涂层。使用扫描电子显微镜（SEM），硬度测量，孔隙率测量研究了涂层的性能，并选择了最佳涂层用于进一步分析。将纳米结构的常规样品暴露于ASTM G65和C633标准测试中，并使用共聚焦和电子显微镜对结果进行分析。由于双峰微观结构的存在，发现纳米结构涂层的性能优于传统涂层，这增加了陶瓷的塑性变形和抗裂性。使用X射线衍射（XRD）分析了纳米结构涂层，并最终确定了其抗裂纹扩展性。涂层还在高腐蚀性的H2S环境中进行了测试，能量色散X射线光谱（EDX）证明了其在该环境中的抵抗力。

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  • 作者

    Pourjavad, Navid.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Mechanical engineering.
  • 学位 M.S.
  • 年度 2011
  • 页码 110 p.
  • 总页数 110
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 老年病学;
  • 关键词

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