Thermal and tribological characterizations of millscale-particles-reinforced ceramic matrix composites
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Date
2018
Authors
Durowaye, S.I.
Sekunowo, O.I.
Lawal, G.I.
Raheem, I.A.
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Taibah University for Science
Abstract
This paper evaluates some basic functional properties of iron-millscale-reinforced ceramic
matrix composites (CMCs) as potential material for automobiles and aircraft brake pads’
application. The particulate CMCs were produced by the powder metallurgy method. Iron
millscale particles’ addition varied from 3 to 18 wt.% in a matrix comprising a mixture of
silica, magnesia and bentonite. After sintering, the composites were subjected to coefficient
of friction (COF), wear, thermal and microstructural characterizations. Microstructure of the
composites showed a uniform distribution of millscale particles in the ceramic matrix with a
strong interfacial bonding between the particles. The composites demonstrated a
comparatively high resistance to wear, appreciable COF (0.506–0.561) and a modest thermal
conductivity (0.39–0.53 W/m K) coupled with high thermal stability. Contributions to these
superlative performances were provided by the high level of friction induced on composites’
surfaces and strong interfacial bonding developed during sintering.
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Keywords
Ceramic matrix composites; wear; thermal stability; microstructure
Citation
Durowaye, S.I. Sekunowo, O.I. Lawal, G.I. Raheem, I.A. (2018). Thermal and tribological characterizations of millscale-particles-reinforced ceramic matrix composites. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE; 12(2): 218–229