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Effect of Heat Treatment Temperature on the Pore Size and Density in Plasma Sprayed Aluminum Oxide Parts

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Abstract—

We have studied the effect of heat treatment conditions on the size and number of pores in plasma-sprayed aluminum oxide parts. Samples 100 × 100 × 2 mm in dimensions have been characterized by X-ray computer tomography, qualitative phase analysis, and scanning electron microscopy. The results demonstrate that the number and size of pores vary nonmonotonically with increasing heat treatment temperature, which is due to the heating-induced polymorphic transformations of aluminum oxide, accompanied by changes in the average density of the material and the associated changes in its volume. The temperature dependences of the number of both small and large pores have extrema at ~1100°C. At this temperature, the number of small pores decreases drastically, whereas the number of large pores increases. Further raising the temperature to 1300°C leads to an inverse process: the number of small pores increases drastically, whereas the number of large pores drops sharply. This is due to the transformation of δ-Al2O3 into α-Al2O3, which occurs very rapidly and is accompanied by a large increase in the density of the material of the plasma-sprayed parts and its embrittlement.

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REFERENCES

  1. Kudinov, V.V. and Ivanov, V.N., Nanesenie plazmoi tugoplavkikh pokrytii (Plasma Deposition of Refractory Coatings), Moscow: Mashinostroenie, 1981.

  2. Matrenin, S.V. and Slosman, A.I., Tekhnicheskaya keramika (Engineering Ceramics), Tomsk: Tomsk. Politekh. Univ., 2004.

  3. Rice, R.W., The porosity dependence of physical properties of materials: a summary review, Key Eng. Mater., 1995, vol. 115, pp. 1–20.

    Article  Google Scholar 

  4. Belyaev, I., Stepnov, A., Bazhenov, V., Pavlov, A., and Kireev, A., Influence of polymorphic transformations on the porosity of plasma-sprayed products from pure aluminum oxide, METAL-2019: 28th Int. Conf. on Metallurgy and Materials (Brno, 2019), Ostrava: TANGER, 2019, pp. 968–972.

  5. Stepnov, A.A., Belyaev, I.V., Bazhenov, V.E., Pavlov, A.A., and Kireev, A.V., Control over the porosity of plasma sprayed aluminum oxide parts by heat treatment, Inorg. Mater., 2019, vol. 55, no. 12, pp. 1214–1222.

    Article  CAS  Google Scholar 

  6. Kudinov, V.V. and Bobrov, G.V., Nanesenie pokrytii napyleniem. Teoriya, tekhnologiya, materialy. Uchebnik dlya vuzov (Growth of Coatings by Sputter Deposition: Theory, Technology, and Materials—Learning Guide for Higher Education Institutions), Moscow: Mashinostroenie, 1992.

  7. Frolov, V.Ya., Klubnikin, V.S., Petrov, G.K., and Yushin, B.A., Tekhnika i tekhnologii naneseniya pokrytii (Coating Processes and Technologies), St. Petersburg: Politekh. Univ., 2008.

  8. Keramika vysokoogneupornykh okislov (Highly Refractory Oxide Ceramics), Poluboyarinov, D.N. and Popilsky, R.Ya., Eds., Moscow: Metallurgiya, 1977.

    Google Scholar 

  9. Fiziko-khimicheskie svoistva okislov (Physicochemical Properties of Oxides), Samsonov, G.V., Ed., Moscow: Metallurgiya, 1978.

    Google Scholar 

  10. Kosenko, N.F., Polymorphism of aluminum oxide, Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 2011, vol. 54, no. 5, pp. 3–16.

    Google Scholar 

  11. Aguilar-Santillan, J., Balmori-Ramirez, H., and Bradt, R.C., Sol–gel formation and kinetic analysis of the in-situ/self-seeding transformation of bayerite [Al(OH)3] to alpha-alumina, J. Ceram. Proc. Res., 2004, vol. 5, no. 3, pp. 196–202.

    Google Scholar 

  12. Bagwell, R.B. and Messing, G.L., Effect of seeding and water vapor on the nucleation and growth of α-Al2O3 from γ-Al2O3, J. Am. Ceram. Soc., 1999, vol. 82, no. 4, pp. 825–832.

    Article  CAS  Google Scholar 

  13. Ivakin, Yu.D., Danchevskaya, M.N., Ovchinnikova, O.G., Murav’eva, G.P., and Kreisberg, V.A., Kinetics and mechanism of doped corundum structure formation in aqueous fluids, Sverkhkrit. Flyuidy: Teor. Prakt., 2008, vol. 3, no. 4, pp. 11–34.

    Google Scholar 

  14. Kashcheev, I.D., Svoistva i primenenie ogneuporov. Spravochnoe izdanie (Properties and Applications of Refractories: A Handbook), Moscow: Teplotekhnik, 2004.

  15. Shun Hao, Chang-Jun Li, and Guan-Jun Yang, Influence of deposition temperature on the microstructures and properties of plasma-sprayed Al2O3 coatings, J. Therm. Spray Technol., 2011, vol. 20, nos. 1–2, pp. 160–169.

    Article  CAS  Google Scholar 

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Funding

This work was supported by the RF Ministry of Science and Higher Education through the federal targeted program Research and Development in the Priority Areas of the Science and Technology Sector of Russia in 2014–2020 (research project no. FTsPIR1185/19, agreement no. 075-15-2019-1838).

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Authors and Affiliations

  1. Aleksandr and Nikolai Stoletov State University, 600000, Vladimir, Russia

    I. V. Belyaev & A. V. Kireev

  2. OOO Plasma Spraying Technologies, 600026, Vladimir, Russia

    A. A. Pavlov

  3. Moscow Institute of Steel and Alloys (National University of Science and Technology), 119049, Moscow, Russia

    V. E. Bazhenov

  4. OOO Plasma Spraying Center, 600026, Vladimir, Russia

    A. A. Stepnov

Authors
  1. I. V. Belyaev
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  2. A. A. Pavlov
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  3. V. E. Bazhenov
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  4. A. A. Stepnov
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  5. A. V. Kireev
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Corresponding author

Correspondence to A. V. Kireev.

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Translated by O. Tsarev

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Belyaev, I.V., Pavlov, A.A., Bazhenov, V.E. et al. Effect of Heat Treatment Temperature on the Pore Size and Density in Plasma Sprayed Aluminum Oxide Parts. Inorg Mater 57, 213–218 (2021). https://doi.org/10.1134/S0020168521020035

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  • DOI: https://doi.org/10.1134/S0020168521020035

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