Loading...

Synthesis of NiAl-TiC composites from elemental powders by volume combustion method

Saadati, A ; Sharif University of Technology | 2019

520 Viewed
  1. Type of Document: Article
  2. DOI: 10.1080/02670836.2019.1593602
  3. Publisher: Taylor and Francis Ltd , 2019
  4. Abstract:
  5. NiAl-TiC composites were synthesised by volume combustion (VC) method from elemental powders to improve the mechanical properties and high temperature performance of nickel aluminide. Synthesised specimens with porous nature were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) analysis. XRD results showed that NiAl was dominant phase and other phases like Al 3 Ni 2 (in NiAl + 5 wt-% TiC, NiAl + 10 wt-% TiC specimens) and AlNi 3 (in equimolar NiAl-TiC) were present in specimens. Synthesised specimens of NiAl, NiAl + 5 wt-% TiC, NiAl + 10 wt-% TiC, NiAl + 15 wt-% TiC and equimolar NiAl-TiC achieved Vickers microhardness values of 508, 590.25, 628, 724 and 838.5, respectively. Addition of TiC increased the porosity of specimens from 4.7% for single phase NiAl to 60.63% for equimolar NiAl-TiC
  6. Keywords:
  7. Composite ; NiAl-TiC ; Volume combustion ; Binary alloys ; Combustion ; Composite materials ; Energy dispersive spectroscopy ; Nickel compounds ; Powders ; Scanning electron microscopy ; X ray diffraction ; Combustion method ; Elemental powders ; Energy dispersive X ray spectroscopy ; High temperature performance ; Nickel aluminides ; Porous nature ; Vickers microhardness ; Titanium carbide
  8. Source: Materials Science and Technology (United Kingdom) ; Volume 35, Issue 7 , 2019 , Pages 831-838 ; 02670836 (ISSN)
  9. URL: https://www.tandfonline.com/doi/abs/10.1080/02670836.2019.1593602?journalCode=ymst20