Browsing School of Applied Sciences (SAS) (2006-July 2014) by Author "Nicholls, John R."

Browsing School of Applied Sciences (SAS) (2006-July 2014) by Author "Nicholls, John R."

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  • Nickel titanium and nickel titanium hafnium shape memory alloy thin films 
    Rao, Jeff; Roberts, T,; Lawson, K. J.; Nicholls, John R. (Elsevier Science B.V., Amsterdam., 2010-04-01)
    Shape memory alloy (SMA) coatings of NiTi and NiTiHf have been deposited onto Si substrates using pulse DC sputtering. Coatings of NiTi with compositions containing 45 to 65 at.% Ti have been fabricated by co-sputtering ...
  • On the Effect of Ageing on the Erosion of EB-PVD TBCs 
    Wellman, R. G.; Nicholls, John R. (Elsevier Science B.V., Amsterdam., 2004-01-30)
    Thermal barrier coatings have been used in gas turbine engines for some four decades, and the erosion resistance of these coatings has been well documented over the years by various different groups. However, as far as ...
  • Pulsed electron beam treatment of MCrAlY bondcoats for EB PVD TBC systems part 2 of 2: Cyclic oxidation of the coatings. 
    Wellman, R. G.; Scrivani, A.; Rizzi, G.; Weisenburger, A.; Tenailleau, F H; Nicholls, John R. (Elsevier Science B.V., Amsterdam., 2007-12-01)
    This paper discusses the effect of pulsed electron beam (PEB) treatment of thermal sprayed MCrAlY bondcoats on the cyclic life of thermal barrier coatings (TBCs). Standard MCrAlY bondcoats were produced via HVOF, VPS and ...
  • A Review of the Erosion of Thermal Barrier Coatings. 
    Wellman, R. G.; Nicholls, John R. (Iop Publishing Ltd, 2007-08-21)
    The application of thermal barrier coatings (TBCs) to components with internal cooling in the hot gas stream of gas turbine engines has facilitated a steep increase in the turbine entry temperature and the associated ...
  • Smart overlay coatings - concept and practice 
    Nicholls, John R.; Simms, Nigel J.; Chan, W. Y.; Evans, H. E. (Elsevier Science B.V., Amsterdam., 2002-01-15)
    Smart overlay coatings are a functionally gradient coating system designed to provide high temperature corrosion protection over a wide range of operating conditions. The SMARTCOAT design consists of a MCrAlY base, ...
  • Some observations on erosion mechanisms of EB PVD TBCS 
    Wellman, R. G.; Nicholls, John R. (Elsevier Science B.V., Amsterdam., 2000-07-10)
    Following the successful application of electron beam (EB) physical vapour deposition (PVD) thermal barrier coatings (TBCs) to moving parts of turbine engines, the erosion resistance of these coatings has been of interest ...

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