TL;DR: In this paper, an actual understanding of the relation between processing conditions, state of CNT dispersion and structure of the filler network, and the resulting electrical, melt rheological and mechanical properties is presented.
TL;DR: In this article, the initial-, intermediate-, and final-stage sintering of fine crystallite yttria-stabilized zirconia was studied, and it was found that agglomerates limit attainable green density, interfere with the development of microstructure, impede initial-stage Sintering kinetics, and limit the potential benefit of the fine crystallites on final stage sinterings.
Abstract: The initial-, intermediate-, and final-stage sintering of fine crystallite yttria-stabilized zirconia was studied. Experiments were conducted on powder lots of differing agglomerate size and one specially prepared agglomerate-free powder. Initial-stage sintering kinetics were compared with a sintering study on larger crystallite size calcia-stabilized zirconia to access the Herring scaling law. It was found that agglomerates limit attainable green density, interfere with the development of microstructure, impede initial-stage sintering kinetics, and limit the potential benefit of fine crystallites on final-stage sintering. An gglomerate free powder centrifuge-cast to 74% green density was sintered to 99.5% of theoretical density in a 1 h 1100°C cycle, which is ∼300°C lower than necessary for an agglomerated but equal crystallite size powder.
TL;DR: In this article, burning characteristics of fuel droplets containing nano and micron-sized aluminum particles were investigated, and five distinctive stages (preheating and ignition, classical combustion, microexplosion, surfactant flame, and aluminum droplet flame) were identified.
TL;DR: In this article, the influence of nano-silica agglomeration on microstructure and properties of the hardened cement-based materials was investigated by using precipitated silica (PS) with very large agglomers and fumed silica with much smaller ones as nanoscale additives.
TL;DR: In this paper, the authors investigated the fluidization of six kinds of SiO 2 powders, with high void fractions and sizes from 7 to 16 nm, and found that the quality of fluidization was not the Geldart-C expected with these nanoparticles, but has a free, much looser dynamic behavior with an extremely high bed expansion that obeys the Richardson-Zaki equation.