Poulia A, Sakkas P M, Kanellopoulou D G, Sourkouni G, Legros C, Argirusis Chr
National Technical University of Athens, School of Chemical Engineering, Laboratory of Inorganic Materials Technology, 15780 Athens, Greece.
Institut für Energieforschung und Physikalische Technologien, Clausthal University of Technology, Leibnizstr. 4, 38678 Clausthal-Zellerfeld, Germany; Clausthaler Zentrum für Materialforschung (CZM), Agricola Str. 2, 38678 Clausthal-Zellerfeld, Germany.
Ultrason Sonochem. 2016 Jul;31:417-22. doi: 10.1016/j.ultsonch.2016.01.031. Epub 2016 Jan 28.
Copper and nickel nanoparticles were synthesized using reducing agents in the presence of direct high energy ultra-sonication. The metallic nanoparticles were decorated on various ceramic substrates (e.g. α-Al2O3, and TiO2) leading to metal reinforced ceramics with up to 45% metallic content. Different parameters, such as the amount of precursor material or the substrate, as well as the intensity of ultrasound were examined, in order to evaluate the percentage of final metallic decoration on the composite materials. All products were characterized by means of Inductively Coupled Plasma Spectroscopy in order to investigate the loading with metallic particles. X-ray Diffraction and Scanning Electron Microscopy were also used for further sample characterization. Selected samples were examined using Transmission Electron Microscopy, while finally, some of the powders synthesized, were densified by means of Spark Plasma Sintering, followed by a SEM/EDX examination and an estimation of their porosity.
在直接高能超声作用下，使用还原剂合成了铜和镍纳米颗粒。金属纳米颗粒被装饰在各种陶瓷基体（如α - Al2O3和TiO2）上，从而得到金属含量高达45%的金属增强陶瓷。为了评估复合材料上最终金属装饰的百分比，研究了不同参数，如前驱体材料的量或基体，以及超声强度。所有产品都通过电感耦合等离子体光谱进行表征，以研究金属颗粒的负载情况。还使用X射线衍射和扫描电子显微镜对样品进行进一步表征。使用透射电子显微镜对选定的样品进行检查，最后，对一些合成的粉末通过放电等离子烧结进行致密化处理，随后进行扫描电子显微镜/能谱分析并估计其孔隙率。
