Influence of Multi-Walled Carbon Nanotube Addition on the Hardness of NiAl-CNT and NiAl3-CNT Composites

2019 ◽  
Vol 821 ◽  
pp. 54-58
Author(s):  
Mary Ajimegoh Awotunde ◽  
Olusoji Oluremi Ayodele ◽  
Adewale Oladapo Adegbenjo ◽  
Moses Okoro ◽  
Mxolisi Brendon Shongwe ◽  
...  

Nickel aluminides have shown great potential as high temperature structural materials. In this study, two classes of nickel aluminide were reinforced with 0.5wt% MWCNTs. Starting powders of nickel, aluminium and MWCNTs were ball milled together using a two stage milling regime and consolidated by spark plasma sintering. The effect of MWCNT reinforcement on the hardness of two classes of nickel aluminide was investigated. Microhardness values revealed a lack of dependence on densification for the NiAl3 composites. The microhardness values of NiAl-CNT reduced with MWCNT addition whereas microhardness values of NiAl3-CNT increased with MWCNT addition.

2017 ◽  
Vol 128 ◽  
pp. 119-129 ◽  
Author(s):  
A.O. Adegbenjo ◽  
P.A. Olubambi ◽  
J.H. Potgieter ◽  
M.B. Shongwe ◽  
M. Ramakokovhu

2012 ◽  
Vol 552 ◽  
pp. 125-133 ◽  
Author(s):  
Govindaraajan B. Yadhukulakrishnan ◽  
Arif Rahman ◽  
Sriharsha Karumuri ◽  
Margaret M. Stackpoole ◽  
A. Kaan Kalkan ◽  
...  

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