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A method for disentangling β-Si3N4 seeds obtained by SHS

AutorBelmonte, Manuel; Miranzo López, Pilar; Osendi, María Isabel
Palabras claveSeeds
Self-Propagating High-Temperature Synthesis (SHS)
Fecha de publicación10-mar-2008
CitaciónPowder Technology 182(3): 364-367 (2008)
ResumenThe manufacture of β-Si3N4 seeds by self-propagating high temperature synthesis (SHS) presents some advantages, such as the low production costs, compared to other preparation methods based on sintering of α-Si3N4 powders and subsequent leaching out of the glassy phase. However, SHS process produces seed clusters that must be disentangled before use as reinforcing particles. Different mechanical and chemical treatments were tried to achieve good seed dispersion, proving that a combined treatment based on a hot basic etching and a short time attrition milling gave almost agglomerate-free particles with adequate features for seeding use.
Descripción4 pages, 3 figures, 2 tables.-- Available online Jun 27, 2007.
Versión del editorhttp://dx.doi.org/10.1016/j.powtec.2007.06.012
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