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Sealing of thermal spray coatings by impregnation

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Abstract

Results from the sealing of porosity by impregnation show that below a certain wetting angle of the sealant, high penetration depths are achieved. However, only sealants with very low curing shrinkages can prevent the transport of electrolyte through the coating.

Various sealant types and impregnation methods are discussed, and factors influencing impregnation and sealing ability of sealants are reviewed. Experimental results from the sealing of plasma-sprayed aluminum-oxide coatings are presented.

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References

  1. K.M. Jasim, R.D. Rawlings, and D.R.F. West, Characterization of Plasma-Sprayed Layers of Fully Yttria-Stabilized Zirconia by Laser Sealing, Surf. Coat. Technol., Vol 53, 1992, p 75–86

    Article  CAS  Google Scholar 

  2. A. Petitbon, L. Boquet, and D. Delsart, Laser Surface Sealing and Strengthening of Zirconia Coatings, Surf. Coat. Technol., Vol 49, 1991, p 57–61

    Article  CAS  Google Scholar 

  3. K.A. Khor, Hot Isostatic Pressing Modifications of Pore Size Distribution in Plasma Sprayed Coatings, Mater. Manuf. Process., Vol 12 (No. 2), 1997, p 291–307

    CAS  Google Scholar 

  4. T. Mäntylä, P. Vuoristo, and P. Kettunen, Chemical Vapor Deposition Densification of Plasma Sprayed Oxide Coatings, Thin Solid Films, Vol 118, 1984, p 437–444

    Article  Google Scholar 

  5. V.A.C. Haanappel, J.B.A. Scharenborg, H.D. van Corbach, T. Fransen, and P.J. Gellings, Can Thermal Barrier Coatings be Sealed by Metal-Organic Chemical Vapor Deposition of Silica and Alumina?, High Temp. Mater. Process., Vol 14 (No. 2), April 1995, p 57–66

    CAS  Google Scholar 

  6. Plasma-Spray Coating, Principles and Applications, R.B. Heimann, Ed., VCH Verlagsgesellschaft, Weinheim, 1996, p 164–165

    Google Scholar 

  7. A. Neville and T. Hodgkiess, Corrosion Behavior and Microstructure of Two Thermal Spray Coatings, Surf. Eng., Vol 12 (No. 4), 1996, p 303–312

    CAS  Google Scholar 

  8. A.A. Ashary and R.C. Tucker, Jr., Electrochemical and Long-Term Corrosion Studies of Several Alloys in Bare Condition and Plasma Sprayed with Cr2O3, Surf. Coat. Technol., Vol 43/44, 1990, p 567–576

    Article  Google Scholar 

  9. A. Ohmori and C.-J. Li, Quantitative Characterization of the Structure of Plasma-Sprayed Al2O3 Coating by Using Copper Electroplating, Thin Solid Films, Vol 201, 1991, p 241–252

    Article  CAS  Google Scholar 

  10. S.L. Wolfson, Corrosion Control of Subsea Piping Systems Using Thermal Sprayed Aluminum Coatings, Mater. Perform., July 1996, p 32–38

  11. E. Lugscheider, P. Jokiel, V. Messerschmidt, and G. Beckschulte, Subsequent Sealing of Thermal Spray Coatings to Increase Corrosion Resistance, Surf. Eng., Vol 10 (No. 1), 1994, p 46–51

    CAS  Google Scholar 

  12. B. Wielage, U. Hofmann, S. Steinhäuser, and G. Zimmermann, Improving Wear and Corrosion Resistance of Thermal Sprayed Coatings, Surf. Eng., Vol 14 (No. 2), 1998, p 136–138

    CAS  Google Scholar 

  13. P. Chraska, V. Brozek, B.J. Kolman, J. Ilavsky, K. Neufuss, J. Dubsky, and K. Volenik, Porosity Control of Thermal Spray Ceramic Deposits, Thermal Spray—Meeting the Challenges of the 21st Century, C. Coddet, Ed., ASM International, 1998, p 1299–1304

  14. K. Niemi, P. Sorsa, P. Vuoristo, and T. Mäntylä, Thermal Spray Alumina Coatings with Strongly Improved Wear and Corrosion Resistance, Thermal Spray Industrial Applications, C.C. Berndt and S. Sampath, Ed., ASM International, 1994, p 533–536

  15. E. Leivo, M. Vippola, P. Sorsa, P. Vuoristo, and T. Mäntylä, Wear and Corrosion Properties of Plasma Sprayed Al2O3 and Cr2O3 Coatings Sealed by Aluminum Phosphates, J. Therm. Spray Technol., Vol 6 (No. 2), 1997, p 205–210

    CAS  Google Scholar 

  16. J. Knuuttila, S. Ahmaniemi, and T. Mäntylä, Wet Abrasion and Slurry Erosion Resistance of Thermal Spray Oxide Coatings, Nordtrib ’98: Proc. 8th International. Conf. Tribology, S. Eskildsen, D. Larsen, H. Reitz, E. Bienk, and C. Straede, Ed., Danish Technological Centre, Aarhus, Denmark, 1998, p 873–880

    Google Scholar 

  17. I. Berezin and T. Troczynski, Surface Modification of Zirconia Thermal Barrier Coatings, J. Mater. Sci. Lett., Vol 15, 1996, p 214–218

    Article  CAS  Google Scholar 

  18. G. John and T. Troczynski, Surface Modification of Thermal Sprayed Coatings, Thermal Spray: Practical Solutions for Engineering Problems, C.C. Berndt, Ed., ASM International, 1996, p 483–488

  19. J. Kathikeyan, C.C. Berndt, A. Ristorucci, and H. Herman, Ceramic Impregnation of Plasma Sprayed Thermal Barrier Coatings, Thermal Spray: Practical Solutions for Engineering Problems, C.C. Berndt, Ed., ASM International, 1996, p 477–482

  20. K. Moriya, H. Tomino, Y. Kandaka, T. Hara, and H. Ohmori, Sealing of Plasma-Sprayed Ceramic Coatings by Sol-Gel Process, Thermal Spray Industrial Applications, C.C. Berndt and S. Sampath, Ed., ASM International, 1994, p 549–553

  21. H. Ito, R. Nakamura, and M. Shiroyama, Infiltration of Copper into Titanium-Molybdenum Spray Coatings, Surf. Eng., Vol 4 (No. 1), 1988, p 35–38

    CAS  Google Scholar 

  22. A. Ohmori, Z. Zhoue, and K. Inoue, Improvement of Plasma-Sprayed Ceramic Coating Properties by Heat-Treatment with Liquid Mn, Thermal Spray Industrial Applications, C.C. Berndt and S. Sampath, Ed., ASM International, 1994, p 543–548

  23. A. Ohmori, Z. Zhoue, K. Inoue, K. Murakami, and T. Sasaki, Sealing and Strengthening of Plasma-Sprayed ZrO2 Coating by Liquid Mn Alloy Penetration Treatment, Thermal Spraying—Current Status and Future Trends, A. Ohmori, Ed., High Temperature Society of Japan, 1995, p 549–554

  24. “Determination of Viscosity with Höppler Viscosimeter,” SFS 3758, Finnish Standards Association, 1977; DIN53015; SIS 02 35 13 (in Finnish)

  25. “Methods of Testing Advanced Technical Ceramics—Part 2: Determination of Density and Porosity,” prEN 623-2;1991, CEN European Committee for Standardization

  26. “Standard Practice for Conducting Dry Sand/Rubber Wheel Abrasion Tests,” ASTM G 65–94

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Authors and Affiliations

  1. Institute of Materials Science, Tampere University of Technology, P.O. Box 589, FI-33101, Tampere, Finland

    J. Knuuttila M. Sc. (Eng.), P. Sorsa & T. Mäntylä

  2. Millidyne Oy, Hermiankatu 8D, FI-33720, Tampere, Finland

    J. Knuuttila & P. Sorsa

Authors
  1. J. Knuuttila M. Sc. (Eng.)
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  2. P. Sorsa
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  3. T. Mäntylä
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  4. J. Knuuttila
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  5. P. Sorsa
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Knuuttila, J., Sorsa, P., Mäntylä, T. et al. Sealing of thermal spray coatings by impregnation. J Therm Spray Tech 8, 249–257 (1999). https://doi.org/10.1007/s11666-999-0002-2

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  • DOI: https://doi.org/10.1007/s11666-999-0002-2

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