25 research outputs found
Смертность населения от воздействия внешних причин как индикатор демографических угроз
Get PDFСМЕРТНОСТЬДЕМОГРАФИЧЕСКАЯ СТАТИСТИКАНАСЕЛЕНИЕДЕМОГРАФИЧЕСКАЯ БЕЗОПАСНОСТЬТРУДОСПОСОБНЫЙ ВОЗРАСТЗДРАВООХРАНЕНИЕ РЕСПУБЛИКИ БЕЛАРУСЬСТАТИСТИЧЕСКИЙ АНАЛИ
Evolution of structure and mechanical properties of hard yet fracture resistant WBC coatings with varying C/W ratio
Get PDFKirkendall Effect on the Nanoscale
Get PDFKirkendall effect has been studied experimentally as well as theoretically for decades already.
There are theoretical indications, that the Kirkendall effect must operate from the beginning
of the diffusion process but there are practically no measurements on this short time and
length scale. For that reason, diffusion on the nanometer scale was investigated
experimentally in different binary systems in thin film geometry. We followed the diffusion
process as well as the Kirkendall effect by different methods (TEM, SNMS and synchrotron
X-ray waveguide technique). Investigations were performed in systems with complete
solubility (Bi-Sb, Cu-Ni, Bi-Sb) as well as in systems forming intermetallic phase (Fe-Sb, Fe-
Pd). It was found that with these methods the Kirkendall shift can be well followed on the
nano-scale. In Fe-Sb system even the bifurcation of the Kirkendall plane was observed
Electron Diffraction Based Analysis of Phase Fractions and Texture in Nanocrystalline Thin Films, Part III: Application Examples
Full text linkIon mass spectrometry investigations of the discharge during reactive high power pulsed and direct current magnetron sputtering of carbon in Ar and Ar/N 2
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In-situ stress measurement during the deposition of CN\u3csub\u3ex\u3c/sub\u3e thin films by unbalanced magnetron sputtering; formation of high levels of stress with 28 eV ion irradiation
No full textStress development during growth of CNx films by unbalanced magnetron sputtering has been investigated with an in-situ laser deflection technique. The stress is initially tensile, then it becomes compressive, reaching a maximum of as much as 7GPa. These are anomalously high stress levels compared with pure carbon, considering the low ion energies (28 eV) and ion-to-neutral arrival rate ratio (\u3c1) employed. This phenomenon is explained by the formation of a fullerene-like microstructure and nitrogen substitution at the growth surface. An accompanying increased reactivity of carbon atoms promotes sp3 bonding or other cross-linking of curved basal planes with resulting film densification
