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Investigation on nanoadhesive bonding of plasma modified titanium for aerospace application

  • Ahmed, Sabbir (Department of Polymer Science and Technology, University of Calcutta) ;
  • Chakrabarty, Debabrata (Department of Polymer Science and Technology, University of Calcutta) ;
  • Mukherjee, Subroto (Facilitation Centre for Industrial Plasma Technologies, IPR) ;
  • Joseph, Alphonsa (Facilitation Centre for Industrial Plasma Technologies, IPR) ;
  • Jhala, Ghanshyam (Facilitation Centre for Industrial Plasma Technologies, IPR) ;
  • Bhowmik, Shantanu (Department of Aerospace Engineering, Amrita University, Faculty of Aerospace Engineering, Delft University of Technology)
  • Received : 2013.07.15
  • Accepted : 2013.09.20
  • Published : 2014.01.31

Abstract

Physico-chemical changes of the plasma modified titanium alloy [Ti-6Al-4V] surface were studied with respect to their crystallographic changes by X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM).The plasma-treatment of surface was carried out to enhance adhesion of high performance nano reinforced epoxy adhesive, a phenomenon that was manifested in subsequent experimental results. The enhancement of adhesion as a consequence of improved spreading and wetting on metal surface was studied by contact angle (sessile drop method) and surface energy determination, which shows a distinct increase in polar component of surface energy. The synergism in bond strength was established by analyzing the lap-shear strength of titanium laminate. The extent of enhancement in thermal stability of the dispersed nanosilica particles reinforced epoxy adhesive was studied by Thermo Gravimetric Analysis (TGA), which shows an increase in onset of degradation and high amount of residuals at the high temperature range under study. The fractured surfaces of the joint were examined by Scanning electron microscope (SEM).

Keywords

References

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