Publication detail
MECHANO-CHEMICALLY PREPARED AND SPARK PLASMA SINTERED ALUMINIUM MATRIX COMPOSITE WITH CERAMIC AND INTERMETALLIC REINFORCEMENT
HANUSOVÁ, P. DLOUHÝ, I. JAN, V.
English title
MECHANO-CHEMICALLY PREPARED AND SPARK PLASMA SINTERED ALUMINIUM MATRIX COMPOSITE WITH CERAMIC AND INTERMETALLIC REINFORCEMENT
Type
journal article - other
Language
en
Original abstract
Preparation of aluminium matrix composites reinforced by fine niobium boride particles was investigated while exploiting the advantages of mechano-chemical processing and spark plasma sintering. For this purpose, a mixture of aluminium, niobium and boron (III) oxide powders were subjected to high energy ball milling. Subsequently, spark plasma sintering was applied. The microstructures of the powder mixture before and after sintering were characterized via X-ray diffraction and scanning electron microscopic observation. Nanoindentation was also employed to characterize the composite performance. X-ray diffraction analysis showed formation of niobium boride particles after mechano-chemical processing. The results indicated that the volume fraction of niobium boride particles was significantly increased and intermetallic Al3Nb particles have been detected after the spark plasma sintering. The instrumented indentation revealed improvement in hardness by 2.9 GPa as well as in the modulus of elasticity by 98 GPa; the final values of 5.7 GPa and 135 GPa respectively being higher than those of comparable aluminium matrix composites.
English abstract
Preparation of aluminium matrix composites reinforced by fine niobium boride particles was investigated while exploiting the advantages of mechano-chemical processing and spark plasma sintering. For this purpose, a mixture of aluminium, niobium and boron (III) oxide powders were subjected to high energy ball milling. Subsequently, spark plasma sintering was applied. The microstructures of the powder mixture before and after sintering were characterized via X-ray diffraction and scanning electron microscopic observation. Nanoindentation was also employed to characterize the composite performance. X-ray diffraction analysis showed formation of niobium boride particles after mechano-chemical processing. The results indicated that the volume fraction of niobium boride particles was significantly increased and intermetallic Al3Nb particles have been detected after the spark plasma sintering. The instrumented indentation revealed improvement in hardness by 2.9 GPa as well as in the modulus of elasticity by 98 GPa; the final values of 5.7 GPa and 135 GPa respectively being higher than those of comparable aluminium matrix composites.
Keywords in English
Mechano-chemical synthesis; Aluminium matrix composite; Niobium Boride; Intermetallic particles; SPS
Released
18.01.2018
Publisher
Faculty of Mechanical Engineering, University of Žilina
Location
Faculty of Mechanical Engineering, University of Žilina
ISSN
1338-6174
Volume
24
Number
4
Pages from–to
131–141
Pages count
10
BIBTEX
@article{BUT149276,
author="Petra {Hanusová} and Ivo {Dlouhý} and Vít {Jan},
title="MECHANO-CHEMICALLY PREPARED AND SPARK PLASMA SINTERED ALUMINIUM MATRIX COMPOSITE WITH CERAMIC AND INTERMETALLIC REINFORCEMENT",
year="2018",
volume="24",
number="4",
month="January",
pages="131--141",
publisher="Faculty of Mechanical Engineering, University of Žilina",
address="Faculty of Mechanical Engineering, University of Žilina",
issn="1338-6174"
}