Journal of the Australian Ceramic Society

, Volume 55, Issue 1, pp 85–96 | Cite as

Mechanical behavior of plasma-sprayed pure and reinforced hydroxyapatite coatings on Ti6Al4V alloy

  • Gurbhinder SinghEmail author


Hydroxyapatite coatings with secondary reinforcement have attracted the attention of the researchers of concerned field. Reinforcement like alumina and titania are used to make the HA coatings more wear resistant. It has been reported in the existing published literature that wear and corrosion are the main cause of the bio-implant failure. This paper deals with the abrasive wear and electrochemical corrosion behavior of as-sprayed and heat-treated pure and 10 wt% 80Al2O3-TiO2-reinforced hydroxyapatite coatings successfully deposited by atmospheric plasma spray technique. Simulated body fluid (SBF) was prepared in laboratory to be used in electrochemical corrosion testing. Samples were dipped in SBF before abrasive wear testing. The coatings were characterized by XRD and SEM-EDAX analysis. Post-coating heat treatment was carried out at 700 and 800 °C. It has been found that post-coating heat treatment at 700 °C has favorable impact on both corrosion and wear resistance of coatings along with hardness and crystallinity of the coatings.


Hydroxyapatite Wear Electrochemical corrosion Bio-implant coatings 


Compliance with ethical standards

Conflict of interest

The author declares that he has no conflict of interest.


  1. 1.
    Aksakal, B., Yildirim, O.S., Gul, H.: Metallurgical failure analysis of various implant materials used in orthopedic applications. J. Fail. Anal. Prev. 4(3), 17–23 (2004)CrossRefGoogle Scholar
  2. 2.
    Shagaldi, B.F., Compson, J.: Wear and corrosion of sliding counterparts of stainless-steel hip screw-plates. Injury. 31(2), 85–92 (2000)CrossRefGoogle Scholar
  3. 3.
    Khan, M.A., Williams, R.L., Williams, D.F.: Conjoint corrosion and wear of titanium alloys. Biomaterials. 20, 765–772 (1999)CrossRefGoogle Scholar
  4. 4.
    Reclaru, L., Lerf, R., Eschler, P.Y., Meyer, J.M.: Corrosion behaviour of a welded stainless-steel orthopedic implant. Biomaterials. 22, 269–279 (2001)CrossRefGoogle Scholar
  5. 5.
    Toshikazu, A., Mitsuo, N.: Fracture characteristics of fatigued Ti6Al4V ELI as an implant material. Mater. Sci. Eng. A. 243, 237–243 (1998)CrossRefGoogle Scholar
  6. 6.
    Bloyce, P.Y., Dong, Q.H., Bell, T.: Surface modification of titanium alloys for combined improvements in corrosion and wear resistance. Surf. Coat. Technol. 107, 125–132 (1998)CrossRefGoogle Scholar
  7. 7.
    Dearnley, P.A., Dahm, K.L., Cimenoglu, H.: The corrosion–wear behaviour of thermally oxidised CP-Ti and Ti–6Al–4V. Wear. 256, 469–479 (2004)CrossRefGoogle Scholar
  8. 8.
    Takanori, T., Motoaki, O., Hajime, O., Keisuke, I., Yoshinori, T., Susumu, T.: Histological and biochemical evaluation of osteogenic response in porous hydroxyapatite coated alumina ceramics. Biomaterials. 17(15), 1499–1505 (1996)CrossRefGoogle Scholar
  9. 9.
    Youn-Ki, J., Kim, W.H., Kweon, O.-K., Hong, S.-H.: The fabrication and biochemical evaluation of alumina reinforced calcium phosphate porous implants. Biomaterials. 24, 3731–3739 (2003)CrossRefGoogle Scholar
  10. 10.
    Ha, R.G., Yang, W.-S., Roh, H.-W., Lee, I.-S., Kim, J.K., Lee, G.H., Lee, D.H., Park, B.J., Lee, M.S., Park, J.-C.: Plasma surface modification of poly (d,l-lactic-co-glycolic acid) (65/35) film for tissue engineering. Surf. Coat. Technol. 193(1–3), 60–64 (2005)Google Scholar
  11. 11.
    Singh, A., Singh, G., Chawla, V.: Characterization and mechanical behaviour of reinforced hydroxyapatite coatings deposited by vacuum plasma spray on SS-316L alloy. J. Mech. Behav. Biomed. Mater. 273–282, 79 (2018)Google Scholar
  12. 12.
    Singh, G., Singh, S., Prakash, S.: Role of post heat treatment of plasma sprayed pure and Al2O3-TiO2 reinforced hydroxyapatite coating on the microstructure and mechanical properties. J. Miner. Mater. Charact. Eng. 9(12), 1059–1069 (2010)Google Scholar
  13. 13.
    Agrawal, K., Singh, G., Prakash, S., Puri, D.: Synthesis of HA by various sol-gel techniques and their comparison: a review, proceeding of National Conference on Advancements and Futuristic Trends in Mechanical and Materials Engineering (2011)Google Scholar
  14. 14.
    Liang, H., Shi, B., Fairchild, A., Cale, T.: Applications of plasma coatings in artificial joints: an overview. Vacuum. 73, 317–326 (2004)CrossRefGoogle Scholar
  15. 15.
    Morks, M.F., Kobayashi, A., Fahim, N.F.: Abrasive wear behavior of sprayed hydroxyapatite coatings by gas tunnel type plasma spraying. Wear. 204–209 (2007)Google Scholar
  16. 16.
    Younesi, M., Bahrololoom, M.E.: Optimizations of wear resistance and toughness of hydroxyapatite nickel free stainless steel new bio-composites for using in total joint replacement. Mater. Des. 31(1), 234–243 (2010)CrossRefGoogle Scholar
  17. 17.
    Lahiri, D., Benaduce, A.P., Rouzaud, F., Solomon, J., Keshri, A.K., Kos, L., Agarwal, A.: Wear behavior and in vitro cytotoxicity of wear debris generated from hydroxyapatite-carbon nanotube composite coating. J. Biomed. Mater. Res. A. 96(1), 1–12 (2011)CrossRefGoogle Scholar
  18. 18.
    Kantesh, B., Yao, C., Sandip Harimkar, P., Dahotre Narendra, B., Arvind, A.: Tribological behavior of plasma-sprayed carbon nanotube-reinforced hydroxyapatite coating in physiological solution. Acta Biomater. 3, 944–951 (2007)CrossRefGoogle Scholar
  19. 19.
    Tadashi, K., Hiroaki, T.: How useful is SBF in predicting in vivo bone bioactivity. Biomaterials. 2907-2915, 27 (2006)Google Scholar
  20. 20.
    Singh, G., Singh, S., Prakash, S.: Surface characterization of plasma sprayed pure and reinforced hydroxyapatite coating on Ti6Al4V alloy. Surf. Coat. Technol. 205, 4814–4820 (2011)CrossRefGoogle Scholar
  21. 21.
    Morks, M.F., Kobayashi, A.: Influence of gas flow rate on the microstructure and mechanical properties of hydroxyapatite coatings fabricated by gas tunnel type plasma spraying. Surf. Coat. Technol. 201, 2560–2566 (2006)CrossRefGoogle Scholar
  22. 22.
    Weichang, X., Shunyan, T., Xuanyong, L., Bin, Z.X., Chuanxian, D.: In vivo evaluation of plasma sprayed hydroxyapatite coatings having different crystallinity. Biomaterials. 25, 415–421 (2004)CrossRefGoogle Scholar
  23. 23.
    Lu, Y.P., Xiao, G.Y., Li, S.T., Sun, R.X., Li, M.S.: Microstructural inhomogeneity in plasma sprayed hydroxyapatite coating and effect of post heat treatment. Appl. Surf. Sci. 252, 2412–2421 (2006)CrossRefGoogle Scholar
  24. 24.
    Ning, C.V., Wang, Y.J., Chen, X.F., Zhao, N.R., Ye, J.D., Wu, G.: Mechanical performances and microstructural characteristics of plasma-sprayed bio-functionally gradient HA–ZrO2–Ti coatings. Surf. Coat. Technol. 200, 2403–2408 (2005)CrossRefGoogle Scholar
  25. 25.
    Chin, Y.Y.: Influence of residual stress on bonding strength of the plasma-sprayed hydroxyapatite coating after the vacuum heat treatment. Surf. Coat. Technol. 201, 7187–7193 (2007)CrossRefGoogle Scholar
  26. 26.
    Gurbhinder, S., Surendra, S., Satya, P.: Post heat treatment of plasma sprayed pure and Al2O3-TiO2 reinforced hydroxyapatite coating on the microstructure and mechanical properties. J. Miner. Mater. Charact. Eng. 10(2), 173–184 (2011)Google Scholar
  27. 27.
    Kang, A.S., Singh, G., Chawla, V.: Characterization of vacuum plasma sprayed reinforced hydroxyapatite coatings on Ti–6Al–4V alloy. Trans. Indian Inst. Metals. (2017).
  28. 28.
    Kang, A.S., Singh, G., Chawla, V.: Mechanical properties of vacuum plasma sprayed reinforced hydroxyapatite coatings on Ti-6Al-4V alloy. J. Aust. Ceram. Soc. (2017).
  29. 29.
    Khor, K.A., Gu, Y.W., Pan, D., Cheang, P.: Microstructure and mechanical properties of plasma sprayed HA/YSZ/Ti–6Al–4V composite coatings. Biomater. 25(18), 4009–4017 (2004)CrossRefGoogle Scholar
  30. 30.
    Yang, Y.C., Chang, E.: Mechanical properties of plasma-sprayed hydroxyapatite coating after post heat treatment: effect of residual stress. In: Marple, B.R., Hyland, M.M., Lau, Y.-C., Li, C.-J., Lima, R.S., Montavon, G. (eds.) Thermal spray 2007: global coating solutions. ASM International (2007)Google Scholar
  31. 31.
    Zhang, Y., Chen, T.H., Gan, C.H., Yu, G.: Wear studies of hydroxyapatite composite coating reinforced by carbon nanotubes. Carbon. 45(5), 998–1004 (2007)CrossRefGoogle Scholar
  32. 32.
    Yi-Pang, L., Chih-Kuang, W., Tsui-Hsien, H., Chun-Cheng, C., Chia-Tze, K., Shinn-Jyh, D.: In vitro characterization of post heat-treated plasma-sprayed hydroxyapatite coatings. Surf. Coat. Technol. 197, 367–374 (2005)CrossRefGoogle Scholar
  33. 33.
    Chen, C.C., Huang, T.H., Kao, C.T., Ding, S.J.: Electrochemical study of the in vitro degradation of plasma-sprayed hydroxyapatite/bioactive glass composite coatings after heat treatment. Electrochim. Acta. 50, 1023–1029 (2004)CrossRefGoogle Scholar
  34. 34.
    Morks, M.F., Fahim, N.F., Kobayashi, A.: Structure, mechanical performance and electrochemical characterization of plasma sprayed SiO2/Ti-reinforced hydroxyapatite biomedical coatings. Appl. Surf. Sci. 255, 3426–3433 (2008)CrossRefGoogle Scholar
  35. 35.
    Morscher, E.W., Hefti, A., Aebi, U.: Severe osteolysis after third-body wear due to hydroxyapatite particles from acetabular cup coating. J. Bone Joint Surg. 80-B(2), 267–272 (1998)CrossRefGoogle Scholar
  36. 36.
    Morks, M.F., Kobayashi, A.: Influence of spray parameters on the microstructure and mechanical properties of gas-tunnel plasma sprayed hydroxyapatite coatings. Mater. Sci. Eng. B. 139, 209–215 (2007)CrossRefGoogle Scholar
  37. 37.
    Yongqing, F., Batchelor, W.A., Ying, W., Khor, K.A.: Fretting wear behaviors of thermal sprayed hydroxyapatite (HA) coating under unlubricated conditions. Wear. 217(1), 132–139 (1998)CrossRefGoogle Scholar

Copyright information

© Australian Ceramic Society 2018

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentGuru Kashi UniversityTalwandi SaboIndia

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