نتایج جستجو برای: isothermal kinetics
تعداد نتایج: 110107 فیلتر نتایج به سال:
Non-isothermal crystallization kinetics has been traditionally predicted using the Nakamura crystal growth model, which is an integral form of Avrami equation under assumption that non-isothermal can be explained a series infinitesimal isothermal steps. However, model often overpredicts fraction near end because ignoring slower secondary kinetics. In this study, dual proposed to capture both pr...
The kinetics and mechanisms of graphene growth on Ni films at 720-880 °C have been measured using fast pulses of acetylene and real-time optical diagnostics. In situ UV-Raman spectroscopy was used to unambiguously detect isothermal graphene growth at high temperatures, measure the growth kinetics with ∼1 s temporal resolution, and estimate the fractional precipitation upon cooldown. Optical ref...
The crystallization process in Se100–xZnx glassy system is investigated using differential scanning calorimeters (DSC). The samples are prepared by conventional melt-quenching technique in the composition range 2 ≤ x ≤ 20 (at%). Nonisothermal measurements are carried out for different heating rates .The value of the glass transition temperature Tg the crystallization temperature Tc and the crys...
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