TY - GEN
T1 - Preparation and characterization of al-si3n4 composite particles
AU - Michalik, Daniel
AU - Valle, Nathalie
AU - Guillot, Jérôme
AU - Pawlik, Tomasz
AU - Sopicka-Lizer, Małgorzat
AU - Witkowska, Anna
AU - Myalski, Jerzy
PY - 2013
Y1 - 2013
N2 - Fine Al-Si3N4 composite particles were prepared via mechanochemical processing of the coarse aluminum powder and submicron silicon nitride powder in order to obtain the core-shell structure of composite powder particles. It was expected that soft aluminum particles could form a thin coat on hard silicon nitride particles. The resultant particles were characterized through scanning and transmission electron microscopy and electron spectroscopes. Their particle size distribution, specific surface area, nitrogen/oxygen content and phase composition were also determined. Chemical analysis showed that limited oxidation occurred during mechanochemical processing. It has been found that a thin Al-enriched layer (larger than 10 nm) formed at some Si3N4 particles apart from the opposite effect if Si3N4 particles were occluded in coarser Al items. Discussion of the results is also presented.
AB - Fine Al-Si3N4 composite particles were prepared via mechanochemical processing of the coarse aluminum powder and submicron silicon nitride powder in order to obtain the core-shell structure of composite powder particles. It was expected that soft aluminum particles could form a thin coat on hard silicon nitride particles. The resultant particles were characterized through scanning and transmission electron microscopy and electron spectroscopes. Their particle size distribution, specific surface area, nitrogen/oxygen content and phase composition were also determined. Chemical analysis showed that limited oxidation occurred during mechanochemical processing. It has been found that a thin Al-enriched layer (larger than 10 nm) formed at some Si3N4 particles apart from the opposite effect if Si3N4 particles were occluded in coarser Al items. Discussion of the results is also presented.
KW - Aluminum-silicon nitride composites
KW - Core-shell structure
KW - Mechanochemical processing
UR - https://www.scopus.com/pages/publications/84875123914
U2 - 10.4028/www.scientific.net/SSP.197.155
DO - 10.4028/www.scientific.net/SSP.197.155
M3 - Conference contribution
AN - SCOPUS:84875123914
SN - 9783037856116
T3 - Solid State Phenomena
SP - 155
EP - 161
BT - Stereology and Image Analysis in Materials Science
PB - Trans Tech Publications Ltd.
T2 - 9th International Conference on Stereology and Image Analysis in Materials Science, STERMAT 2012
Y2 - 3 September 2012 through 6 September 2012
ER -