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CHEN Mudi 《等离子体科学和技术》2010,12(5):547-550
Growth of SiC nanowires in plasma-assisted hot filament chemical-vapor-deposition by using hexamethyldisiloxane (HMDSO) as the gas source is reported. The SiC nanowires (SiCNWs) grew on Au-coated silicon substrate with Core-Shell structure, where the cores consisted of polycrystalline SiC grains and the shell exhibited amorphous structure. The featured structures such as cones, polyhedrons, ball-liked particles were observed in the case without plasma assistance. The underlying mechanism for the growth of nanostructures was also discussed. The high chemical activity induced by the plasma process plays an important role in using monomer to generate nanostructure. 相似文献
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纳米SiO2在涂料中的应用 总被引:53,自引:5,他引:48
利用高科技产品纳米SiO2的特殊性能,对传统涂料进行改性,以改善涂料的触变性、抗老化性等。 相似文献
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为探索沉积态贫铀(DU)薄膜更有效的防护层新材料与更薄的防护层制备技术,开展了纳米Al涂层的磁控溅射制备技术研究,制备了Al与DU单层、Al/DU/Al三层薄膜样品,并开展了纳米Al防护层Al/DU/Al样品大气环境下72 h的防氧化性能研究。利用扫描电镜(SEM)观察样品表面形貌,X射线光电子能谱仪(XPS)测量样品元素组成与价态变化,X射线衍射(XRD)测量样品物相组成与变化。结果表明:厚度大于10 nm即可生成连续的Al涂层,Al涂层晶粒随着厚度增加呈现长大的趋势;30 nm厚Al防护涂层有效阻止了DU薄膜大气环境的氧化:72 h内,DU层O含量没有发现明显的变化。 相似文献
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