Skip to main content
SpringerLink
Log in

Mechanical properties of WC–Co coatings with different decarburization levels

  • Published:
Rare Metals Aims and scope Submit manuscript

Abstract

In this study, two kinds of WC–Co coatings with different decarburization levels were deposited by high-velocity oxy-fuel (HVOF) spraying using the ultrafine WC–Co composite powder and commercial micronsized powder, respectively. The hardness and elastic modulus were measured on the top surface and cross sections of the prepared coatings by the nanoindentation method. The results show that the ultrafine-structured coating has much higher density and inhibited decarburization than the conventional coating, which thus results in higher hardness and elastic modulus values than the micronsized coating. The wear resistance of thermal-sprayed cermet coatings greatly depends on the cross-sectional hardness and elastic modulus which reflects the bond strength between splats to some extent. Based on the analysis, a better understanding of the microstructure and properties in cermet coating materials was obtained.

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

Similar content being viewed by others

References

  1. Jing QF, Tan YF. Tribological properties of cobalt-based alloy coating with different cobalt contents by electro-spark deposition. Rare Met. 2013;32(1):40.

    Article  Google Scholar 

  2. Liu SL, Zheng XP, Geng GQ. Influence of nano-WC–12Co powder addition in WC–10Co–4Cr AC-HVAF sprayed coatings on wear and erosion behavior. Wear. 2010;269(5–6):362.

    Article  Google Scholar 

  3. Wang HB, Song XY, Liu XM, Wei CB, Gao Y, Fu J. Effect of heat-treatment of spray-dried powder on properties of ultrafine-structured WC–Co coating. Surf Coat Technol. 2012;207:117.

    Article  Google Scholar 

  4. Afzal M, Ajmal M, NusairKhan A, Hussain A, Akhter R. Surface modification of air plasma spraying WC–12% Co cermet coating by laser melting technique. Optics Laser Technol. 2014;56:202.

    Article  Google Scholar 

  5. Shipway PH, Gupta K. The potential of WC–Co hardmetals and HVOF sprayed coatings to combat water-droplet erosion. Wear. 2011;271(9–10):1418.

    Article  Google Scholar 

  6. Mateen A, Saha GC, Khan TI, Khalid FA. Tribological behaviour of HVOF sprayed near-nanostructured and microstructured WC–17 wt% Co coatings. Surf Coat Technol. 2011;206(6):1077.

    Article  Google Scholar 

  7. Wang HB, Song XY, Liu XM, Gao Y, Wei CB, Wang Y, Guo GS. Effect of carbon content of WC–Co composite powder on properties of cermet coating. Powder Technol. 2013;246:492.

    Article  Google Scholar 

  8. Fauchais P, Montavon G, Bertrand G. From powders to thermally sprayed coatings. Therm Spray Technol. 2010;19(1–2):56.

    Article  Google Scholar 

  9. Yin B, Zhou HD, Yi DL. Microsliding wear behavior of HVOF sprayed conventional and nanostructured WC–12Co coatings at elevated temperatures. Surf Eng. 2010;26(6):469.

    Article  Google Scholar 

  10. Basak AK, Celis JP, Vardavoulias M, Matteazzi P. Effect of nanostructuring and Al alloying on friction and wear behaviour of thermal sprayed WC–Co coating. Surf Coat Technol. 2012;206(16):3508.

    Article  Google Scholar 

  11. Babu PS, Basu B, Sundararajan G. Abrasive wear behavior of detonation sprayed WC–12Co coatings: influence of decarburization and abrasive characteristics. Wear. 2010;268(11–12):1387.

    Article  Google Scholar 

  12. Saha GC, Khan TI. Comparative abrasive wear study of HVOF coatings obtained by spraying WC–17Co microcrystalline and duplex near-nanocrystalline cermet powders. Eng Mater Technol. 2011;133(4):041002.

    Article  Google Scholar 

  13. Liu WB, Song XY, Zhang JX, Zhang GZ, Liu XM. Preparation of ultrafine WC–Co composite powder by in situ reduction and carbonization reactions. Refract Metals Hard Mater. 2009;27(1):115.

    Article  Google Scholar 

  14. Wang HB, Song XY, Wei CB, Gao Y, Guo GS. Abrasion resistance enhancement of ultrafine-structured WC–Co coating fabricated using in situ synthesized composite powder. Mater Sci Technol. 2013;29(11):1067.

    Article  Google Scholar 

  15. Rayon E, Bonache V, Salvador MD. Hardness and Young’s modulus distributions in atmospheric plasma sprayed WC–Co coatings using nanoindentation. Surf Coat Technol. 2011;205(17–18):4192.

    Article  Google Scholar 

  16. Lu XH, Gao Y, Wei WZ, Zhang GY, Cai HW, Wang CG. Abrasive wear resistance of surface rare-earth high speed steel. Chin J Rare Met. 2013;37(1):744.

    Google Scholar 

  17. He JH, Schoenung JM. A review on nanostructured WC–Co coatings. Surf Coat Technol. 2002;157(1):72.

    Article  Google Scholar 

  18. Lu L, Ma Z, Wang FC, Liu YB. Friction and wear behaviors of Al2O3–13 wt% TiO2 coatings. Rare Met. 2013;32(1):87.

    Article  Google Scholar 

Download references

Acknowledgments

This study was financially supported by the National High Technology Research and Development Program of China (No. 2013AA031104).

Author information

Authors and Affiliations

  1. School of Materials Science and Engineering, University of Science and Technology Bejing, Beijing, 100083, China

    Xu Wu & Zhi-Meng Guo

  2. College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China

    Hai-Bin Wang & Xiao-Yan Song

Authors
  1. Xu Wu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Zhi-Meng Guo
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Hai-Bin Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Xiao-Yan Song
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Xu Wu.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Wu, X., Guo, ZM., Wang, HB. et al. Mechanical properties of WC–Co coatings with different decarburization levels. Rare Met. 33, 313–317 (2014). https://doi.org/10.1007/s12598-014-0257-8

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12598-014-0257-8

Keywords

Search

Navigation