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The Structure and Porosity of Plasma Coatings

  • FUNCTIONAL COATINGS AND SURFACE TREATMENT
  • Published:
Inorganic Materials: Applied Research Aims and scope

Abstract

Porous coatings are actively used in engineering practice. The porous coating determines the reliability of the operation of the intraosseous implant and the heat transfer process when the aggregate state of the refrigerant is changed. The choice of method for quantitative analysis of porosity is determined by the structure of the coating. In this study, plasma coatings sprayed from powders were analyzed. A porosity of 10.3% inside the alumina coating was analyzed by mercury porosimetry. The main volume of the porosity of the coating is formed by pores ranging in size from 0.13 to 0.36 μm; their share in the total volume is 68.29%. The remaining volume is distributed in sizes of 0.04–0.12 mm, 0.58–4.66 mm, and 5.66–18.2 mm. Microtomography makes it possible to get a more complete general idea of the macro- and microstructure of coatings, establishing the mechanisms of its formation, and to obtain data on the real shape of the pores. A quantitative description of the visible pores of three-dimensional capillary-porous 3CaO⋅Al2O3 coatings in the form of ridges and depressions was determined by raster image analysis using special STIMAN programs. The porosity of this coating is 39.7% of the distribution over four pore groups: 0.74–3.56, 4.34–11.57, 14.08–55.65, 67.73–267.71 mm.

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REFERENCES

  1. Berndt, C.C., Hasan, F., Tietz, U., and Schmitz, K.P., A review of hydroxyapatite coatings manufactured by thermal spray, in Advances in Calcium Phosphate Biomaterials, Besim, Ben-Nissan, Ed., Berlin–Heidelberg: Springer, 2014, pp. 267–329.

  2. Gross, K.A., Walsh, W., and Swarts, E., Analysis of retrieved hydroxyapatite-coated hip prostheses, J. Therm. Spray Technol., 2004, vol. 13, no. 2, pp. 190–199.

    Article  CAS  Google Scholar 

  3. Heimann, R.B., Plasma-sprayed bioactive ceramic coatings with high resorption resistance based on transition metal-substituted calcium hexaorthophosphates, Materials, 2019, vol. 12, no. 13, art. ID 2059. https://doi.org/10.3390/ma12132059

    Article  CAS  PubMed Central  Google Scholar 

  4. Dorozhkin, S.V., Functionalized calcium orthophosphates (CaPO4) and their biomedical applications, J. Mater. Chem. B, 2019, vol. 7, no. 47, pp. 7471–7489. https://doi.org/10.1039/c9tb01976f

    Article  CAS  PubMed  Google Scholar 

  5. Surtaev, A., Kuznetsov, D., Serdyukov, V., Pavlenko, A., Kalita, V., Komlev, D., Ivannikov, A., and Radyuk, A., Structured capillary-porous coatings for enhancement of heat transfer at pool boiling, Appl. Therm. Eng., 2018, vol. 133, pp. 532–542. https://doi.org/10.1016/j.applthermaleng.2018.01.051

    Article  CAS  Google Scholar 

  6. Pavlenko, A.N., Tsoi, A.N., Surtaev, A.S., Kuznetsov, D.V., Kalita, V.I., Komlev, D.I., Ivannikov, A.Yu., and Radyak, A.A., Experimental study of rewetting of a superheated plate with structured capillary-porous coating by flowing liquid film, High Temp., 2018, vol. 56, no. 3, pp. 404–409.

    Article  CAS  Google Scholar 

  7. Kalita, V.I., Komlev, D.I., Komlev, V.S., and Radyuk, A.A., The shear strength of three-dimensional capillary-porous titanium coatings for intraosseous implants, Mater. Sci. Eng., C, 2016, vol. 60, pp. 255–259.

    Article  CAS  Google Scholar 

  8. Bulygina, L.G., Sokolov, V.N., Chernov, M.S., Razgulina, O.V., and Yurkovets, D.I., Analysis of the soil structure by the scanning electron microscope—X-ray computed microtomograph system (SEM-mCT), Geoekol. Inzhen. Geol. Gidrogeol. Geokriol., 2014, no. 5, pp. 450–456. https://elibrary.ru/item.asp?id=22390922.

  9. Kalita, V.I., Sokolov, V.N., and Paramonov, V.A., Three-dimensional capillary-porous coatings, Fiz. Khim. Obrab. Mater., 2000, no. 4, pp. 55–61.

  10. Kalita, V.I. and Komlev, D.I., Plazmennye pokrytiya s nanokristallicheskoi i amorfnoi strukturoi (Plasma Coatings with Nanocrystalline and Amorphous Structure), Moscow: Biblioteka, 2008.

  11. Siebert, B., Funke, C., Vasen, R., and Stover, D., Changes in porosity and Young’s modulus due to sintering of plasma sprayed thermal barrier coatings, J. Mater. Process. Technol., 1999, vols. 92–93, pp. 217–223.

  12. Qiua, S.-Y., Liu, Y.-C., Guo, H.-B., Huang, C.-G., Ma, Y., and Wu, C.-W., Effect of splat-interface discontinuity on effective thermal conductivity of plasma sprayed thermal barrier coating, Ceram. Int., 2020, vol. 46, pp. 4824–4831. https://doi.org/10.1016/j.ceramint.2019.10.215

    Article  CAS  Google Scholar 

  13. Kalita, V.I., Radyuk, A.A., Komlev, D.I., Ivannikov, A.Yu., Komlev, V.S., and Demin, K.Yu., The boundary between the hydroxyapatite coating and titanium substrate, Inorg. Mater.: Appl. Res., 2017, vol. 8, no. 3, pp. 444–451.

    Article  Google Scholar 

  14. Kalita, V.I., Komlev, D.I., Ivannikov, A.Yu., Radyuk, A.A., Komlev, V.S., Mamonov, V.I., Sevast’ianov, M.A., and Baikin, A.S., The shear strength of Ti–HA composite coatings for intraosseous implants, Inorg. Mater.: Appl. Res., 2017, vol. 8, no. 2, pp. 296–304. https://doi.org/10.1134/S2075113317020083

    Article  Google Scholar 

  15. Mamayev, A.I., Mamayeva, V.A., Kalita, V.I., Komlev, D.I., Radyuk, A.A., Ivannikov, A.Yu., Mikhaylova, A.B., Baikin, A.S., Sevostyanov, M.A., and Amel’chenko, N.A., Shear strength of the cylindrical titanium implant-plastic system, Inorg. Mater.: Appl. Res., 2018, vol. 9, no. 5, pp. 855–860. https://doi.org/10.1134/S2075113318050209

    Article  Google Scholar 

  16. Sesso, M.L., Berndt, C.C., and Wong, Y.C., Effect of plasma spray parameters on thermal barrier coating formation and microstructural properties, Proc. Int. Thermal Spray Conf. & Exposition (ITSC 2013): Innovative Coating Solutions for the Global Economy (Busan, Republic of Korea, May 13–15, 2013), Lima, R.S., Ed., ASM Int., pp. 577–582.

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Funding

This work was supported by the Russian Science Foundation, project no. 20-19-00671. The studies were carried out using a LEO-1450VP scanning electron microscope and a Yamato TDM 1000H-II computerized X-ray microtomograph (Japan), purchased at the expense of the Development Program of Moscow University.

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Authors and Affiliations

  1. Moscow State University, 119991, Moscow, Russia

    V. N. Sokolov & M. S. Chernov

  2. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (IMET RAS), 119334, Moscow, Russia

    V. I. Kalita, D. I. Komlev & A. A. Radyuk

Authors
  1. V. N. Sokolov
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  2. M. S. Chernov
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  3. V. I. Kalita
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  4. D. I. Komlev
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  5. A. A. Radyuk
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Corresponding authors

Correspondence to V. N. Sokolov, M. S. Chernov, V. I. Kalita or D. I. Komlev.

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Translated by Sh. Galyaltdinov

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Sokolov, V.N., Chernov, M.S., Kalita, V.I. et al. The Structure and Porosity of Plasma Coatings. Inorg. Mater. Appl. Res. 12, 718–726 (2021). https://doi.org/10.1134/S2075113321030369

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  • DOI: https://doi.org/10.1134/S2075113321030369

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