Surface Modification of Narra Wood (Pterocarpus indicus) by Ion Shower Treatment
Surface Modification of Narra Wood (Pterocarpus indicus) by Ion Shower Treatment
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DOI：
10.1143/jjap.45.8498
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发表时间：
2006-10
影响因子：
1.5
通讯作者：
Gene Q. Blantocas;H. Ramos;M. Wada
中科院分区：
文献类型：
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作者：
Gene Q. Blantocas;H. Ramos;M. Wada
利用气体放电离子源（GDIS）作为实验装置，产生并研究了扩散低能氢离子簇射的特性。纳拉木材样品，然后暴露于淋浴，调查地形离子辐照的影响。通过质谱分析的束成分显示H+离子是主要的物种，这表明在表面改性过程中，这种特定的单原子离子的重要参与作用。低能量照射（600-700 eV）产生疏水表面，扫描电子显微镜照片显示表面孔的部分闭合。然而，对于更高能量的照射（>900 eV）观察到亲水性的逆转，表面图像显示外部降解被认为是化学活性H+物质的蚀刻效应。通过润湿模型对辐照样品的吸收性进行定量，其中接触角的时间速率方程进行数值求解并拟合到实验数据上。对应于600 eV的光束能量的值为0.0015的变化速率比例常数K，表现出最长的吸湿抑制时间超过10分钟。K值的增加表明增加的润湿行为。
A gas discharge ion source (GDIS) was used as test facility to produce and study the characteristics of diffused, low-energy hydrogen ion showers. Narra wood samples were then exposed to the showers to investigate topographical effects of ion irradiation. Analysis of beam constituents by mass spectroscopy shows H+ ions to be the dominant species suggesting an essential participatory role for this particular monatomic ion in the surface modification process. Low energy irradiation (600–700 eV) produced hydrophobic surfaces with scanning electron micrographs showing partial closure of surface pores. Whereas, a reversion to hydrophilicity was observed for higher energy irradiation (>900 eV), with surface images showing exterior degradation believed to be the etching effects of the chemically active H+ species. The irradiated samples absorbency was quantified via the wetting model wherein the contact angle's time rate equation was numerically solved and fitted onto experimental data. The change rate proportionality constant K with value 0.0015 corresponding to 600 eV beam energy, exhibited the longest moisture absorptive inhibition time of more than 10 min. An increasing value of K indicates increased wetting behavior.