Effects of silicon carbide contents on microstructure and mechanical properties of spark plasma–sintered titanium-based metal matrix

  • Peter Ifeolu OdetolaEmail author
  • Emmanuel Ajenifuja
  • Abimbola P. I. Popoola
  • Olawale Popoola


In this study, TiNiAl-SiC composites (TMCs) containing 1, 3, and 6 wt% SiC were prepared by spark plasma sintering (SPS) process using heating rate of 100 °C/min, at 800 °C, and sintering pressure of 40 MPa, and holding time of 10 min. Phase identification was carried out on TiNiAl-SiC composites by X-ray diffraction technique. Microstructure and elemental analyses were done with a scanning electron microscope (SEM) and energy dispersive X-ray (EDS) spectroscopy. SEM micrographs showed pronounced grain boundary interaction between the SiC and the TiNiAl matrix with increase wt% SiC. The results from the mechanical characterization generally showed enhancement in hardness, tensile strength, yield strength, and wear. At 6 wt% SiC, the optimum values of 2852 MPa, 930.46 MPa, and 673.02 MPa were established for hardness, tensile strength, and yield strength, respectively. Also, TiNiAl-SiC composite with 6 wt% SiC presented the best frictional profile with the highest resisting power due to the lowest friction coefficient of about 0.4, and the wear rate of 2.18 mm3/m. The absence of grooves in the worn morphology also confirmed that it has good tribological properties.


Titanium matrix composite Spark plasma sintering Powder processing Aerospace Microstructure Hardness Tensile strength Yield strength Wear 



The authors wish to thank the Tshwane University of Technology, Pretoria, South Africa, for the logistic supports provided during the course of this work. National Research Foundation (NRF) is also acknowledged.

Funding information

This work received financial support from the Tshwane University of Technology, Pretoria, South Africa.


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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  • Peter Ifeolu Odetola
    • 1
    Email author
  • Emmanuel Ajenifuja
    • 1
    • 2
    • 3
  • Abimbola P. I. Popoola
    • 1
  • Olawale Popoola
    • 2
  1. 1.Department of Chemical, Metallurgical and Materials EngineeringTshwane University of TechnologyPretoriaSouth Africa
  2. 2.Center for Energy and Electric PowerTshwane University of TechnologyPretoriaSouth Africa
  3. 3.Center for Energy Research and DevelopmentObafemi Awolowo UniversityIle-IfeNigeria

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