Experimental and simulated grain boundary groove profiles in tungsten

P. Sachenko, J.H. Schneibel, J.G. Swadener, W. Zhang

Research output: Contribution to journalArticlepeer-review


Grain-boundary grooving has been studied on polished surfaces of polycrystalline tungsten annealed at 1350°C. Atomic force microscopy images were taken in the same area for each groove after different annealing times. Secondary oscillations next to the main groove maxima (predicted for grooving by surface diffusion) were observed, to our knowledge for the first time. The agreement between experimental and calculated groove profiles (using the surface diffusion model of Mullins (1957, J. appl. Phys., 28, 333)) improved when grain-boundary fluxes were introduced.
Original languageEnglish
Pages (from-to)627-631
Number of pages5
JournalPhilosophical Magazine Letters
Issue number9
Publication statusPublished - 2000


  • Atomic force microscopy
  • Annealing
  • Grain boundary grooving
  • Computer simulation
  • Diffusion in solids
  • Grain boundaries


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