Topographic, optical and chemical properties of zinc particle coatings deposited by means of atmospheric pressure plasma
Topographic, optical and chemical properties of zinc particle coatings deposited by means of atmospheric pressure plasma
复制标题
DOI：
10.1016/j.apsusc.2017.03.021
复制
发表时间：
2017-07
影响因子：
6.7
通讯作者：
L. Wallenhorst;L. Loewenthal;G. Avramidis;C. Gerhard;H. Militz;G. Ohms;W. Viöl
中科院分区：
文献类型：
--
作者：
L. Wallenhorst;L. Loewenthal;G. Avramidis;C. Gerhard;H. Militz;G. Ohms;W. Viöl
在这项研究中，测量了通过冷等离子喷涂工艺沉积的氧化锌层的形貌、光学和化学特性。在这里，锌微粒被送入等离子火花放电的余辉，而基材被放置在流出等离子射流的相当冷的区域中。在这种情况下，在不同的样品上实现了几乎封闭的层。通过激光扫描和原子力显微测量确定基础层的颗粒尺寸为纳米级。此外，在其顶部还发现了较大的颗粒和团聚物。结果表明，部分等离子体引起了初始粒子的减少，很可能是由于熔化或蒸发。进一步表明，如X射线光电子能谱所证实的，等离子体导致此类颗粒的氧化增加。对所得混合层进行定量分析。结果表明，沉积层由大致相等比例的氧化锌和元素锌组成。此外，该层的带隙能量是通过光谱分析确定的。在这里，观察到沉积层具有相当大的紫外线阻挡性能。介绍了可能的潜在影响以及潜在的应用。
In this research, topographic, optical and chemical properties of zinc oxide layers deposited by a cold plasma-spray process were measured. Here, zinc micro particles were fed to the afterglow of a plasma spark discharge whereas the substrates were placed in a quite cold zone of the effluent plasma jet. In this vein, almost closed layers were realised on different samples. As ascertained by laser scanning and atomic force microscopic measurements the particle size of the basic layer is in the nanometre scale. Additionally, larger particles and agglomerates were found on its top. The results indicate a partial plasma-induced diminishment of the initial particles, most probably due to melting or vaporisation. It is further shown that the plasma gives rise to an increased oxidation of such particles as confirmed by X-ray photoelectron spectroscopy. Quantitative analysis of the resulting mixed layer was performed. It is shown that the deposited layers consist of zinc oxide and elemental zinc in approximately equal shares. In addition, the layer's band gap energy was determined by spectroscopic analysis. Here, considerable UV blocking properties of the deposited layers were observed. Possible underlying effects as well as potential applications are presented.