Ruthenium-Carbon (Ru-C) nano-composite films were prepared by plasma-enhanced chemical vapor deposition (PECVD) and the effects of deposition conditions on the microstructure and electrical properies were investigated. The films consisted of agglomerated grains of 10 to 20 nm in diameter, in which Ru particles of 2.5 to 3.5 nm in diameter were dispersed in a C matrix. The C content of the films...

Ethylene oxide (EO) is industrially produced by epoxidation of ethylene on Ag-based heterogeneous catalysts. Electrophilic oxygen species are assumed to be active key in the EO production. This study explores possibility electrochemically these a solid electrochemical cell. Two series Ag based cermet electrodes were prepared either with Yttria Stabilized Zirconia (YSZ), pure ionic conductor, or...

Y2O3-stabilized ZrO2 (YSZ) has been the material of choice for thermal barrier coatings (TBCs) in past decades, yet its phase decomposition limits application above 1200 °C. In this study, Gd2O3 and Yb2O3 co-doped YSZ powders were produced, which some amounts monoclinic (m) introduced into cubic (c) matrix. XRD results showed that fabricated obtained by a solid synthesis composed m c phases, ha...

Hydroxyapatite (HA) coatings on metallic implants have been extensively used in orthopedic applications to improve tissue-implant interactions, enhance their biocompatibility, and functionality. However, the expensive synthetic HA is most widely bioceramic for implant coatings, leading high costs. Hence, this research explored potential of an inexpensive biogenic derived from fish scales FsHA/y...

A study of spark plasma sintered Ti6Al7Nb alloy reinforced with yttria stabilized zirconia (YSZ) has been carried out to assess the biocorrosion response in Hank's solution. The results indicate that microstructural changes resulting from YSZ addition were considerably different pure Ti6Al7Nb. All + composites showed a higher Vickers microhardness value 10%YSZ exhibiting most enhanced hardness ...

Given the need to process anodes and composites based on nano-YSZ in reducing or air containing additional CO2 atmospheres for fabrication of solid oxide fuel cells (SOFCs), electrolysis (SOECs), we have studied effect exposure CO+N2/H2 CO2+air mixtures during sintering YSZ green pellets, prepared from commercial nanopowders, their structure, microstructure, chemical composition electrical prop...

CO2 and/or H2O were reduced to CO/H2 in micro-tubular solid oxide electrolysers with yttria-stabilized zirconia (YSZ) electrolyte, Ni-YSZ cermet cathode and strontium(II)-doped lanthanum manganite (LSM) oxygen-evolving anode. At 822 C, the kinetics of CO2 reduction were slower (ca. 0.49 A cm 2 at 1.8 V) than H2O reduction or co-reduction of CO2 and H2O, which were comparable (ca. 0.83 to 0.77 A...