, Volume 39, Issue 6, pp 28–30 | Cite as

Grain Size Variation in Coatings

  • A. F. Jankowski
  • T. O. Wilford
Material Testing & Analysis


An increase in grain size during deposition occurs in physical vapor deposition. Columnar grain structures result as the coating thickens beyond the point of constant grain size (>25 μm). As the deposition is taking place, the grain size of the Ti coating increases from that on the order of 0.01 (Jim to that greater than 1.0 μm. At a certain critical thickness during deposition, tc, the grain size stabilizes. This study examines the minimum coating thickness required to produce the ultimate grain size. Then this investigation relates the critical thickness to the texture of the coating.


Critical Thickness Texture Coating Misfit Strain Titanium Sheet Test Circle 
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  1. 1.
    E.O. Hall, Proc. Phys. Soc. Lond., B64 (1951), p. 747.CrossRefGoogle Scholar
  2. 2.
    N.J. Petch, J. Iron Steel Inst, 174 (1953), p. 25.Google Scholar
  3. 3.
    R.F. Bunshah and R.S. Juntz, Trans. Vac. Met. Conf. Amer. Vac. Soc, ed. L.M. Bianchi (Boston, Mass.: American Vacuum Society, 1965), pp. 200–226.Google Scholar
  4. 4.
    R.F. Bunshah and R.S. Juntz, “Influence of Condensation Temperature on Microstructure and Tensile Properties of Titanium Sheet Produced by High Rate Deposition Process,” Met. Trans., 4 (1973), pp. 21–26.CrossRefGoogle Scholar
  5. 5.
    A.F. Jankowski and J.F. Shewbridge, “Grain Size Dependence on Layer Thickness in Composition Modulated Thin Films,” Matls. Lett., 4 (1986), accepted for publication.Google Scholar
  6. 6.
    A.F. Jankowski, “Ti-Be Residual Strain Analysis: Role of Deposition Variables on Texture and Strength,” (Report RFP 3926, Rockwell International, 1986).Google Scholar
  7. 7.
    A.F. Jankowski, “Thin Film Fracture: Ti Coating—Be Substrate Bond Failure,” J. Matls. Sci., 21 (1986), accepted for publication.Google Scholar
  8. 8.
    G. Mah, P. McLeod and D. Williams, “Characterization of Silver Coatings from a Hollow Cathode Source,” J. Vac. Sci. & Tech., 11 (1974), pp. 663–665.CrossRefGoogle Scholar
  9. 9.
    J.J. Kearns, “Thermal Expansion and Preferred Orientation in Zircalloy,” (Report WAPD-TM-472, Westinghouse Elee. Corp., 1965).Google Scholar
  10. 10.
    A.F. Jankowski and P.A. Steinmeyer, “X-Ray Diffraction Characterization of Elastic Strain Composition Modulated Layered Structures,” Layered Structures and Epitaxy, ed. J.M. Gibson, G.C. Osbourn and R.M. Tromp, MRS Symposium Proceedings, Vol. 56 (Boston, Mass.: Materials Research Society, 1986), accepted for publication.Google Scholar
  11. 11.
    J.E. Hilliard, “Estimating Grain Size by the Intercept Method,” Metal Progress, 85, No. 5 (1964), pp. 99–100, 102.Google Scholar
  12. 12.
    J.E. Hilliard (Report 62-RL-3133M, General Electric, 1963).Google Scholar
  13. 13.
    B.A. Movchan and A.V. Demchishin, Fizika Metall., 28 (1969), p. 653.Google Scholar
  14. 14.
    J.A. Thornton, Ann. Rev. Mater. Sci., 7 (1977), p. 239.CrossRefGoogle Scholar
  15. 15.
    J.A. Thornton, “Influence of Apparatus Geometry and Deposition Conditions on the Structure and Topography of Thick Sputtered Coatings,” J. Vac. Sci. & Tech., 11 (1974), pp. 666–670.CrossRefGoogle Scholar
  16. 16.
    C.W. Jennings, Journal of Adhesion, 4 (1972), p. 25.CrossRefGoogle Scholar
  17. 17.
    R.D. Bland, G.J. Kominiak and D.M. Mattox, “Effects of Ion Bombardment during Deposition on Thick Metal and Ceramic Deposits,” J. Vac. Sci. & Tech., 11 (1974), pp. 671–674.CrossRefGoogle Scholar
  18. 18.
    D.H. Boone, T.E. Strangman and L.W. Wilson, “Some Effects of Structure and Composition on the Properties of Electron Beam Vapor Deposited Coatings for Gas Turbine Superalloys,” J. Vac. Sci. & Tech., 11 (1974), pp. 641–646.CrossRefGoogle Scholar
  19. 19.
    D. Lee and W.A. Backofen, “Yielding and Plastic Deformation in Textured Sheet of Titanium and Its Alloys,” Trans. TMS-AIME, 236 (1966), pp. 1696–1704.Google Scholar
  20. 20.
    F. Larson (Report AMRA TR-65-23, U.S. Army Matls. Res. Agency, 1965).Google Scholar
  21. 21.
    C.D. Turk and H.L. Marcus, “The Mechanical Properties of Physical Vapor Deposited Titanium,” Trans. TMS-AIME, 242 (1968), pp. 2251–2256.Google Scholar
  22. 22.
    B.D. Cullity, Elements of X-Ray Diffraction (Reading, Mass.: Addison Wesley Publishing Co., Inc., 1967), pp. 269–272Google Scholar

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© TMS 1987

Authors and Affiliations

  • A. F. Jankowski
  • T. O. Wilford

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