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Wear performance and mechanical properties ofMWCNT/HDPE nanocomposites for gearingapplications

Dabees, S.; Tirth, V.; Mohamed, A.; Kamel, B. M.

Abstract (englisch):
MWCNT/HDPE nanocomposite spur gears prepared in concentrations of 0, 0.5, 1, 1.5, 2, and2.5% by weight using centrifugal ball milling dispersion method followed by CNC milling.SEM examination revealed a sound dispersion of the MWCNT in the HDPE matrix until2 wt.%. Nanocomposites exhibited higher decomposition temperature and thermal sta-bility than neat HDPE. Yield strength increased linearly in nanocomposites up to 2 wt.%,and then it saturated. Nanofillers' addition steadily increased the young's modulus up toa weight fraction of 1.5 %, surging rapidly between 1.5 to 2 wt.%. In contrast, its rate ofincrease declined between 2 and 2.5 wt.%. The Taber abrasion test showed a reduction inwear loss of nanocomposites. The nanocomposites' toughness increased between 0 (neatHDPE) and 1.5 wt.% of MWCNT but declined at higher concentrations due to transition fromductile to brittle nature. At a torque of 5 N-m, the wear performance increased consistentlywith the increase in the concentration of nanofillers. At 10 N-m, 2.5 wt.% nanocompos-ite gears displayed a decline due to the increased brittleness. Satisfactory dispersion anddeveloped interphase fervently contributed to the load transfer and mechanical properties.Nanofillers improved the wear resistance, hardness, and lowered plastic deformation. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000128224
Veröffentlicht am 18.01.2021
DOI: 10.1016/j.jmrt.2020.09.129
Zitationen: 1
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2214-0697, 2238-7854
KITopen-ID: 1000128224
HGF-Programm 43.22.01 (POF III, LK 01) Functionality by Design
Erschienen in Journal of materials research and technology
Verlag Elsevier
Nachgewiesen in Scopus
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