کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1788031 1023458 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sintering kinetic measurement of nickel nanoparticle agglomerates by electrical mobility classification
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Sintering kinetic measurement of nickel nanoparticle agglomerates by electrical mobility classification
چکیده انگلیسی

The gas-phase sintering kinetics of nickel nanoparticle agglomerates was investigated by a two step electrical mobility classification. The first electrostatic classifier sorted the agglomerated mono-area nickel nanoparticles generated by pulsed laser ablation, and then the subsequent heating process created the sintered nickel nanostructures. The second electrostatic classifier combined with the condensation nucleus counter scanned the shrinkage of the agglomerated mono-area nickel nanoparticles due to the sintering process. The change in the mono-area particle mobility size measured by the electrical mobility classification technique was compared with the results of the existing coalescence model to extract the kinetic parameters for the sintering of nickel particles. The optimum activation energy found in this study was ∼63 kJ/mol, which falls between the diffusion of nickel atoms (∼49 kJ/mol) and the migration and coalescence of nickel particles (∼78 kJ/mol).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 9, Issue 5, September 2009, Pages 928–932
نویسندگان
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