MWCNT Oranının MWCNT ile güçlendirilmiş Al2O3 Matrisli Nanokompozitlerin Mikroyapı ve Mekanik Özelliklerine Etkisi

Ramazan Karslıoğlu

doi:10.29130/dubited.571504

Research Article

Effect of MWCNT Ratio on Microstructure and Mechanical Properties of MWCNT Reinforced Al2O3 Matrix Nanocomposites

Year 2019, , 1922 - 1930, 31.07.2019

Ramazan Karslıoğlu

https://doi.org/10.29130/dubited.571504

Cited By: 1

Abstract

In this study, multi
walled carbon nanotube (MWCNT) reinforced alumina (Al2O3) ceramic matrix
nanocomposites containing MWCNT from 0.0 wt.% to 15.0 wt. % have been
successfully produced. Nano size (80 nm) Al2O3 powders and MWCNT’s have mixed
with high velocity planetary ball milling and then green compacted and sintered
at 1600 oC for 120 min in flowing Argonne atmosphere. Microstructure of produced nano composites
have investigated with scanning electron microscope (SEM) from fracture
surfaces. Effect of MWCNT addition on crystal structure were investigated via
X-ray diffractometer (XRD). Microhardness test was carried out for determine
mechanical properties of ceramic matrix nano composite mechanical properties.
Vickers indenter test method was used for determining fracture toughness
properties. MWCNT addition was significantly increased fracture toughness of Al2O3
based structure. % 2.5 wt. % MWCNT addition was increased 182.5 wt. % fracture
toughness when the compering unreinforced Al2O3 structure.

Keywords

Nanocomposites, MWCNT, Al2O3, Fracture toughness, sintering

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