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Protection of polymer from atomic-oxygen erosion using Al_2O_3 atomic layer deposition coatings

机译:使用Al_2O_3原子层沉积涂层保护聚合物免受原子氧侵蚀

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摘要

Thin films of Al_2O_3 grown using atomic layer deposition (ALD) techniques can protect polymers from erosion by oxygen atoms. To quantify this protection, polyimide substrates with the same chemical repeat unit as Kapton were applied to quartz crystal microbalance (QCM) sensors. Al_2O_3 ALD films with varying thicknesses were grown on the polyimide substrates. The ALD-coated polyimide materials were then exposed to a hyperthermal atomic-oxygen beam. The mass loss versus oxygen-atom exposure time was measured in situ by the QCM. Al_2O_3 ALD film thicknesses of ~35 A were found to protect the polymer from erosion.
机译:使用原子层沉积(ALD)技术生长的Al_2O_3薄膜可以保护聚合物免受氧原子的侵蚀。为了量化这种保护,将具有与Kapton相同的化学重复单元的聚酰亚胺基板应用于石英晶体微量天平(QCM)传感器。在聚酰亚胺衬底上生长厚度不同的Al_2O_3 ALD膜。然后将涂覆有ALD的聚酰亚胺材料暴露于高温原子氧束中。质量损失与氧原子暴露时间的关系通过QCM原位测量。发现Al_2O_3 ALD膜厚度约为35 A,可以保护聚合物不受腐蚀。

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  • 来源
    《Thin Solid Films》 |2008年第12期|4036-4039|共4页
  • 作者单位

    Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59717, USA;

    Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59717, USA;

    Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59717, USA;

    Air Force Office of Scientific Research, 875 N. Randolph Street, Arlington, VA 22203, USA;

    Departments of Chemistry and Biochemistry and Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA;

    Departments of Chemistry and Biochemistry and Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    polymers; polyimide; atomic layer deposition; Al_2O_3; atomic oxygen; erosion; quartz crystal microbalance;

    机译:聚合物聚酰亚胺原子层沉积;Al_2O_3;原子氧侵蚀;石英晶体微量天平;

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