It is common for the components in a homogeneous metallic alloy to separate at its surface. This phenomenon is known as surface segregation. For example, under certain conditions, the surface layer of atoms in a Cu85Pd15 is pure copper, while the second layer of atoms is 50% copper. The bulk retains its 85/15 composition. A depth-profile characterizes the surface segregation by describing the a...

ZnO thin films were deposited on Si(400) substrates by e-beam evaporation technique, and then post-annealed at different annealing temperatures (200-800°C). Dependence of the crystallographic structure, nano-strain, chemical composition and surface physical Morphology of these layers on annealing temperature were studied. The crystallographic structure of films was studied using X-Ray Diffracti...

ZnO thin films were deposited on Si(400) substrates by e-beam evaporation technique, and then post-annealed at different annealing temperatures (200-800°C). Dependence of the crystallographic structure, nano-strain, chemical composition and surface physical Morphology of these layers on annealing temperature were studied. The crystallographic structure of films was studied using X-Ray Diffracti...

INTRODUCTION Lack of reproducibility is still the major reason CANR is not generally accepted and has not advanced into commercial use. The ability to reproduce any phenomenon depends on knowing the major variables and conditions required for the events to operate. In the case of cold fusion, even fundamental factors such as the D/Pd ratio and the crystal structure of the nuclear-active regions...

despite having some useful properties, stainless steels suffer from lack of suitable surface hardness. in this research electroless ni-b-tl coating was used with the aim to increase their surface hardness. the effects of nickel chloride, sodium borohydride, thallium nitrate and ethylendiamin on the chemical composition of coating were studied. to achieve an increase in hardness, the effects of ...