Skip to main content
SpringerLink
Log in

Microstructure Control of Thermally Sprayed Co-Based Self-Fluxing Alloy Coatings by Diffusion Treatment

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

This article describes microstructure control aimed for wear-resistance improvement of Co-based (Co-Cr-W-B-Si) self-fluxing alloy coating by diffusion treatment. The diffusion treatments of thermally sprayed Co-based self-fluxing alloy coating on steel substrate were carried out at 1370-1450 K for 600-6000 s under an Ar gas atmosphere. Microstructural variations of the coating and the interface between the substrate and the coating were investigated in detail. A proper diffusion treatment precipitates two kinds of fine compounds in Co-based matrix. X-ray diffractometer (XRD) and electron probe microanalyzer (EPMA) analysis revealed these precipitates to be a chromium boride dissolving cobalt and a tungsten boride containing cobalt and chromium. The size of each precipitate became larger with increasing treatment temperature and time. A coating with the proper size borides showed a superior wear-resistance.

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

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12

Similar content being viewed by others

References

  1. M.C. Parsons, Thermal Spray Superhard Coating, Preprints of Papers for Eighth International Thermal Spraying Conference, September 27 to October 1, 1976 (Miami Beach, FL, USA), p 381-384

  2. Y. Shimatani, M. Endou, On the Structure, Hardness of Surfalloy Sprayed Layer, and Diffusion of Major Elements Between Sprayed Layer and Substrate, J. Thermal Spraying Soc. Japan., Vol. 4(No. 2), 1967, p 11-18 (in Japanese)

    Google Scholar 

  3. M. Toyota, K. Usuki, S. Iwanaga, and K. Shyoji, The Influence of the Fusing Treatment on the Hardness and Microstructure of Sprayed and Fused “Surfalloy S-6M,” J. Thermal Spraying Soc. Japan., 1969 6(1), p 11-18, (in Japanese)

    Google Scholar 

  4. Y. Mima, M. Magome, H. Nakahira, T. Morishita, On the Mechanical Properties of Spray Deposits Fused of self-fluxing Alloys, J. Thermal Spraying Soc. Japan., Vol. 13 (No. 1), 1976, p 22-28 (in Japanese)

    Google Scholar 

  5. W. Milewski and M. Sartowski, Some Properties of Coatings Plasma Sprayed from NiCrBSi Materials, Preprints of Papers for 10th International Thermal Spraying Conference, May 2-6, 1983 (Essen, Germany), p 8-11

  6. O. Knotek, H. Reimann, and P. Lohang, On NiCrBSi Matrix-Carbide Reactions in Furnace Densified Wear Resistant Overlays, Preprints for 10th International Thermal Spraying Conference, May 2-6, 1983 (Essen, Germany), p 15-17

  7. W.J. Lenling, M.F. Smith, and J.A. Henfling, Beneficial Effects of Austempering Post-Treatment on Tungsten Carbide Based Wear Coatings, Proceedings of the 3rd National Thermal Spraying Conference, May 20-25,1990 (Long Beach, CA, USA), p 227-232

  8. S. Sampath, V. Anand, and S.F. Wayne, Microstructure and Properties of Plasma Sprayed Mo/NiCrBSi Coatings, Proceedings of the 3rd National Thermal Spraying Conference, May 20-25,1990 (Long Beach, CA, USA), p 755-760

  9. K. Hidaka, K. Tanaka, S. Nishimura, and K. Kawarada, Hot Corrosion Resistance of a Chromium-Based Alloy Coating, Proceedings for 14th International Thermal Spraying Conference, May 22-26, 1995 (Kobe, Japan), p 609-614

  10. H. Akebono, H. Nishimori, J. Komotori, M. Shimizu, The Effect of Coating Thickness on Fatigue Properties of Ni-based Self-Fluxing Alloy Thermally Sprayed Steel with Long Period Fusing, J. Thermal Spraying Soc. Japan., Vol. 33 (No. 4), 1996, p 7-15 (in Japanese)

    Google Scholar 

  11. K. Kishitake, H. Era, F. Otsubo, H. Ohhara, Structure of Ni-Based Self Fluxing Alloy Coating and Interface Reaction with Substrate, J. Thermal Spraying Soc. Japan., Vol. 25 (No. 4), 1989, p 1-8 (in Japanese)

    Google Scholar 

  12. F. Otsubo, K. Kishitake, T. Terasaki, Residual Stress Distribution in Thermally Sprayed Self-Fluxing Alloy Coatings, J. Thermal Spraying Soc. Japan., Vol. 43 (No. 2), 2006, p 42-46 (in Japanese)

    CAS  Google Scholar 

  13. Y. Matsubara, Y. Sochi, M. Tanabe, and A. Takeya, Advanced Coatings on Furnace Wall Tubes, Building on 100 Years of Success: Proceedings of the 2006 International Thermal Spray Conference, B. R. Marple, M. M. Hyland, Y. C. Lau, R. S. Lima, and J. Voyer, Ed., May 15-18, 2006 (Seattle, WA, USA), ASM International, 2006

  14. Y. Matsubara, K. Kohira, T. Uchibayasi, K. Sakata, Diffusion Treatment of Thermal Sprayed Co-base Cr-W-B-Si Alloy Coating, J. Thermal Spraying Soc. Japan., Vol. 25 (No. 4), 1989, p 1-8 (in Japanese)

    Google Scholar 

  15. Y. Matsubara, K. Kohira, K. Sakata, and T. Uchubayashi, Microstructual Variation of Thermal Sprayed Co-Cr-W-B Alloy Coatings due to Diffusion Treatment, Proceedings of Surface Engineering International Conference, Oct 18-22, 1988 (Tokyo, Japan), Japan Thermal Spraying Society, p 53-62

  16. J. Oh, J. Komotori, M. Shimizu, Fatigue Strength and Fracture Mechanism of Thermally Sprayed Co-Based Self-Fluxing Alloy with Fusing Treatment, J. Thermal Spraying Soc. Japan., Vol. 37 (No. 4), 2000, p 166-174 (in Japanese)

    CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Fujikikosan Corporation, Kitakyushu, Japan

    Kazunori Sakata

  2. Kyushu University, Fukuoka, Japan

    Kosuke Nakano & Hirofumi Miyahara

  3. Kurume National College of Technology, Kurume, Japan

    Yasuhiro Matsubara

  4. Oita National College of Technology, Oita, Japan

    Keisaku Ogi

Authors
  1. Kazunori Sakata
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Kosuke Nakano
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Hirofumi Miyahara
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Yasuhiro Matsubara
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Keisaku Ogi
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Kazunori Sakata.

Additional information

This article is an invited paper selected from presentations at the 2007 International Thermal Spray Conference and has been expanded from the original presentation. It is simultaneously published in Global Coating Solutions, Proceedings of the 2007 International Thermal Spray Conference, Beijing, China, May 14-16, 2007, Basil R. Marple, Margaret M. Hyland, Yuk-Chiu Lau, Chang-Jiu Li, Rogerio S. Lima, and Ghislain Montavon, Ed., ASM International, Materials Park, OH, 2007.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Sakata, K., Nakano, K., Miyahara, H. et al. Microstructure Control of Thermally Sprayed Co-Based Self-Fluxing Alloy Coatings by Diffusion Treatment. J Therm Spray Tech 16, 991–997 (2007). https://doi.org/10.1007/s11666-007-9125-5

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11666-007-9125-5

Keywords

Search

Navigation