Spark plasma sintering of Ni <sub>3</sub> Al-xB-1wt% CNT (0.0 &lt; x &lt; 1.5 at%) nanocomposite

Journal article (2019)

Authors

Ali Mohammadnejad Isfahan University of Technology
Abbas Bahrami Isfahan University of Technology
M. Sajadi Isfahan University of Technology
M. Yazdan Mehr Electronic Components, Technology and Materials - EEMCS
Research Group
Electronic Components, Technology and Materials (EEMCS) (TU Delft)
Mechanical properties Carbon nanotubes Spark plasma sintering Nanocomposite Ni3Al
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Published Date

2019

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronic Components, Technology and Materials

Abstract


This paper investigates the effects of carbon nanotubes (CNT) addition on the structure and mechanical properties of Ni
3
Al-xB (0.0 < x < 1.5 at%) intermetallic compound. Ni
3
Al-xB-1wt%CNT nanocomposite powders were first synthesized by mechanical alloying. Effects of CNT addition on the lattice strain and crystallite size of synthesized powders were investigated by means of X-ray diffraction (XRD) analysis. Scanning electron microscope (SEM) was used to study powder morphologies. Powders, synthesized by mechanical alloying, were then consolidated using spark plasma sintering (SPS), conducted at 950 °C under pressure 50 MPa. Microhardness and shear punch tests were employed to study the mechanical properties of sintered samples. Results show that CNT addition is accompanied by a decrease in crystallite size and a significant improvement of mechanical properties of Ni
3
Al-xB (0.0 < x < 1.5 at%) intermetallic compounds.