Skip to main content
SpringerLink
Log in

Peel strength of thermal sprayed coatings

  • Published:
Journal of Thermal Spray Technology Aims and scope Submit manuscript

Abstract

For the thermal spray industry to progress, informative and reliable coating evaluation techniques are needed. Measurement of adhesion is an important function, and existing tests have severe limitations. The peel adhesion test (PAT) was adapted to thermal spray coatings (TSC) from the adhesives industry. In this test, a thin metal foil is coated by thermal spraying. The foil is then peeled off the coating at a constant speed. The force required for separation is monitored as a function of crack position. The force is than converted into a peel strength that is equivalent to the energy required for separation. The adhesion of a range of different TSCs was measured in the form of spray pattern profiles and uniform coatings. Results were compared with the ASTM standard for TSC adhesion measurement, the expected range of interface toughness, and the Vickers hardness of the coating. Comparisons indicate that the PAT is self consistent, and it produces results comparable to other toughness measurements. The peel test was used to determine interface toughness in the range of 10 to 60 J/m2 for ceramic coatings, 150 to 250 J/m2 for cermet coatings, and 160 to 300 J/m2 for metal coatings.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. HS. Ingham, Jr., Adhesion of Flame Sprayed Coatings,Adhesion Measurement of Thin Films, Thick Films and Bulk Coatings, K.L. Mittal, Ed., ASTM, 1976, p 285–291

  2. “Standard Test Method for Peel or Stripping Strength of Adhesive Bonds,” D 903-49,Annual Book of ASTM Standards, ASTM, 1983

  3. “Standard Test Method for Floating Roller Peel Resistance of Adhesives,”D 3167–76,Annual Book of ASTM Standards, ASTM, 1986

  4. A.D. Crocombe and R.D. Adams, An Elasto-Plastic Investigation of the PeelTest,J. Adhes., Vol 13,1982, p 241–267

    Google Scholar 

  5. A.D. Crocombe and R.D. Adams, Peel Analysis Using the Finite Element Method,J Adhes., Vol 12, 1981, p 127–139

    Google Scholar 

  6. M.D. Thoules and H.M. Jensen, Elastic Fracture Mechanics of the Peel Test Geometry,J. Adhes., Vol 38, 1992, p 185–197

    Google Scholar 

  7. K. Kim and J. Kim, Elasto-Plastic Analysis of the Peel Test for Thin Film Adhesion,J. Eng. Mater. Technol., Vol 110, 1988, p 266–273

    Article  CAS  Google Scholar 

  8. J. Holowczak, V. Greenhut, and D. Shanefield, Peel Adhesion Bond Strength of Direct Bonded Copper Alumina as Affected by Alumina Sintering Aids,Met. Ceramic Joining, P. Kumar and V. Greenhut, Ed., TMS/AIME, 1991, p 153–166

  9. M. Sexsmith and T. Troczynski, Peel Adhesion Test for Thermal Sprayed Coatings,J. Therm. Spray Technol, Vol 3, 1994, p 404–411

    CAS  Google Scholar 

  10. M. Sexsmith and T. Troczynski, Model for Plastic Deformation Work of Peeled Metallic Foils,J. Adhes. Sci. Technol., to be published April 1996

  11. M. Sexsmith and T. Troczynski, Development of Peel Adhesion Test for Thermal Sprayed Coatings,Proceedings of the 14th International Thermal Spray Conference (Kobe), 1995, p 897–902

  12. M. Sexsmith and T. Troczynski, Variations in Coating Properties across a Spray Pattern,Proceedings of the 7th National Thermal Spray Conference (Boston), 1994, p 751–757

  13. “Standard Test Method for The Adhesion of Flame Sprayed Coatings,” C 633-79,Annual Book of ASTM Standards, ASTM, 1979

  14. J.R. Finke and W.D. Swank, Simultaneous Measurement of Ni-Al Particle Size, Velocity, and Temperature in Atmospheric Thermal Plasmas,Thermal Spray: International Advances in Coating Technology, C.C. Berndt, Ed., ASM International, 1992, p 39-43

  15. T. Troczynski and J. Camire, Resistance to Fracture of Thermal Sprayed Ceramic Coatings,Thermal Spray Industrial Applications, C. Berndt and S. Sampath, Ed., ASM International, 1994, p 663-668

  16. C.K. Lin and C.C. Berndt, Measurement and Analysis of Adhesion Strength for Thermally Sprayed Coatings,J. Therm. Spray Technol., Vol 3(No. 1), 1994, p75–104

    CAS  Google Scholar 

  17. C. Berndt and R. McPherson, The Adhesion of Plasma Sprayed Ceramic Coatings to Metals,Mater. Sci. Res., Vol 14, 1981,p 618–628

    Google Scholar 

  18. V.E. Belaschenko, Thermal Conditions of Formation of Hot Sprayed Coatings on Flat Surfaces,Fiz. Khim. Obrab. Mater., Vol 20 (No. 3), 1986, p 82–87

    Google Scholar 

Download references

Author information

Author notes

  1. M. Sexsmith

    Present address: Ballard Adv. Materials, North Vancouver, B.C., Canada

Authors and Affiliations

  1. Department of Metals and Materials Engineering, University of British Columbia, 309-6350 Stores Rd., V6T 1ZA, Vancouver, B.C., Canada

    M. Sexsmith & T. Troczynski

Authors
  1. M. Sexsmith
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. T. Troczynski
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Sexsmith, M., Troczynski, T. Peel strength of thermal sprayed coatings. JTST 5, 196–206 (1996). https://doi.org/10.1007/BF02646433

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02646433

Keywords

Search

Navigation