Effects of carbon nanotube weight fraction on the fracture toughness of spark plasma sintered nickel aluminide-NiAl3
| Autor: | Peter Apata Olubambi, Mary Ajimegoh Awotunde, Adewale O. Adegbenjo, Olusoji Oluremi Ayodele, Moses Okoro, Mxolisi Brendon Shongwe |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Nial Materials science Intermetallic Spark plasma sintering chemistry.chemical_element 02 engineering and technology Carbon nanotube 021001 nanoscience & nanotechnology 01 natural sciences law.invention Nickel chemistry.chemical_compound Fracture toughness chemistry law 0103 physical sciences Composite material 0210 nano-technology computer Mass fraction computer.programming_language Nickel aluminide |
| Zdroj: | Materials Today: Proceedings. 28:625-629 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2019.12.233 |
| Popis: | Nickel aluminides have captured the attention of researchers for a few years now owing to their lightweight and high strength. They possess a huge potential for high temperature applications primarily due to their structural integrity at elevated temperatures. However the major limiting factor of these promising intermetallics is their room temperature fracture toughness, which is too low to satisfy service requirements. Although there are majorly three groups of nickel aluminides NiAl, Ni3Al and NiAl3, only the NiAl and Ni3Al groups have been intensely researched while documented literature on NiAl3 is rare, despite being the lightest intermetallic in the group. In this work, carbon nanotubes were incorporated into NiAl3 and consolidated using the spark plasma sintering (SPS) technique. The effect of carbon nanotube (CNTs) reinforcement on the fracture toughness of NiAl3 was studied. It was observed that the addition of the carbon nanotubes improved the fracture toughness of the reinforced composites over the un-reinforced sample initially, but the fracture toughness reduced with increase in carbon nanotube weight fraction. |
| Databáze: | OpenAIRE |
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