Al/Graphene/CNT hybrid composites: Hardness and sliding wear studies
-
Published:2021
Issue:2
Volume:49
Page:414-421
-
ISSN:1451-2092
-
Container-title:FME Transactions
-
language:en
-
Short-container-title:FME Transactions
Author:
Naik Manjunath,Manjunath L.H.,Koti Vishwanath,Lakshmikanthan Avinash,Koppad Praveennath,Kumaran Sampath
Abstract
Graphene and carbon nanotubes are two carbon based materials known for their unique wear and friction properties. It would be quite interesting to understand the wear behavior of aluminium hybrid composites when these two nanosize reinforcements are incorporated into it. The hybrid composites with varying weight fractions of graphene (1, 2, 3 and 5 wt.%) and fixed CNT content of 2 wt.% were produced using powder metallurgy technique. The effect of varying graphene content on hardness and sliding wear of hybrid composites was studied. The wear tests were done as per ASTM G-99 standard with fixed sliding velocity (2 m/s) and sliding distance (1200 m) but varying applied load (10 - 30 N). Worn surface analysis was conducted using scanning electron microscope to arrive at wear mechanisms responsible for wear of aluminium and its hybrid composites. Increase in graphene content led to increase in bulk hardness with highest value of 61 RHN for hybrid composite with 3 wt.% graphene content. The wear rate of hybrid composites was found to be decreasing with enhancement in graphene content. Lower wear rate in hybrid composites was due to the formation of lubricating layer on the worn surface.
Publisher
Centre for Evaluation in Education and Science (CEON/CEES)
Subject
Mechanical Engineering,Mechanics of Materials
Reference41 articles.
1. Lakshmikanthan, A., Bontha, S., Krishna, M., Koppad, P.G. and Ramprabhu, T.: Microstructure, mechanical and wear properties of the A357 composites reinforced with dual sized SiC particles, J. Alloys. Compd., Vol. 786, pp. 570-580, 2019; 2. Lakshmikanthan, A., Ramprabhu, T, Babu, S., Koppad, P.G., Gupta, M. and Krishna, M., Bontha, S.: The effect of heat treatment on the mechanical and tribological properties of dual size SiC reinforced A357 matrix composites, J. Mater Res. Technol., Vol. 9, pp. 6434-6452, 2020; 3. Avinash, L., Ramprabhu, T. and Bontha, S.: The Effect on the dry sliding wear behavior of gravity cast A357 reinforced with dual size silicon carbide particles, Appl. Mech. Mater., Vol. 829, pp. 83-89, 2016; 4. Avinash L., Kumar, H., Parthasarathy, A., Kumar, K.N. and Sajjan, B.: The effect of ceramic reinforcement on the microstructure, mechanical properties and tribological behavior of Al-7.5% Si-5% Mg alloy, Appl. Mech. Mater., Vol. 867, pp. 3-9, 2017; 5. Sandra Veličković, Slobodan Garić, Blaža Stojanović, Aleksandar Vencl.: Tribological Properties of Aluminium Matrix Nanocomposites, Applied Engineering Letters., Vol. 1, No 3, pp. 72-79, 2016;
Cited by
19 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|