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Ba4.2Nd9.2Ti18O54 (BNT) ceramics have been prepared by solid-state ceramic method. Dark holes were observed in the center of the ceramics. All the samples showed typical columnar grain morphology in SEM images. TEM and XRD analysis indicated that there was only a BaNd2Ti4O12 (JCPDS Card No. 44-0061) phase in the ceramics. In HRTEM images, the grain boundary was clear and no impurities and defects...
This paper investigates a composite solders obtained by adding Sn-3.0Ag-0.5Cu (SAC) nano-particles into conventional eutectic Sn-58Bi solder paste. The microstructure analysis and the measurement of the Vickers microhardness have been carried out. Utilizing the self-developed consumable-electrode direct current arc (CDCA) technique, the Sn-3.0Ag-0.5Cu nano-particles with an average particle size between...
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