Surface segregation during irradiation

Surface Modifications during a Catalytic Reaction: a Combined APT and FIB/SEM Analysis of Surface Segregation

To improve the understanding of catalytic processes, the surface structure and composition of the active materials need to be determined before and after reaction. Morphological changes may occur under reaction conditions and can dramatically influence the reactivity and/or selectivity of a catalyst. Goldbased catalysts with different architectures are currently being developed for selective ox...

SEGREGATION OF MG, CA, AL and TI IN SILICATES DURING ION IRRADIATION

1060. [10] Keller L. P. & Messenger S. (2004) LPS XXXV Abstract #1985. Acknowledgements: This work was performed in part under the auspices of the U.S. Department of Energy, NNSA by the Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48 and in part at the Stanford Synchrotron Radiation Laboratory, a national user facility operated by Stanford University on behalf of the U.S...

Surface Segregation in Multicomponent Clusters

Nanostructured materials are not immune from surface segregation, as can be shown for solid samples made from nanosized BaFelz.2xCoxTix019 barium femte particles and a variety of free clusters. Both theory and experiment provide ample demonstration that very limited dimensions of very small clusters does not necessarily impart stability against surface and grain boundary segregation. In fact, w...

Surface segregation in binary alloys

implant surface temperature changes during er:yag laser irradiation with different cooling systems.

peri-implantitis is one of the most common reasons for implant failure. decontamination of infected implant surfaces can be achieved effectively by laser irradiation; although the associated thermal rise may cause irreversible bone damage and lead to implant loss. temperature increments of over 10ºc during laser application may suffice for irreversible bone damage.the purpose of this study was ...