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High-temperature oxidation of sintered lanthanum hexaboride

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Conclusions

The intense interaction between sintered LaB6 with atmospheric oxygen starts, at temperatures close to 700°C, The mechanism of the process and composition of the interaction products change depending on temperature. Oxidation resistance of LaB6 up to 1200°C is satisfactory. At higher temperatures, catastrophic oxidation of the material caused by active evaporation of boron oxide takes place.

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Literature cited

  1. Yu. A. Kunitskii, V. V. Morozov, and V. Ya. Shlyuko, High-Temperature Electrode Materials [in Russian], Vishcha Shkola, Kiev (1977).

    Google Scholar 

  2. V. A. Lavrenko, L. A. Glebov, Y. S. Lugovskaya, and I. N. Frantsevich, “Investigation of high-temperature oxidation of lanthanum hexaboride in oxygen and the effect of internal oxidation on the protective properties of the scale” Oxid. Met.,7, No. 2, 131–139 (1973).

    Google Scholar 

  3. R. F. Voitovich and É. A. Pugach, “Oxidation of lanthanum hexaboride at high temperatures” Poroshk. Metall., No. 2, 71–75 (1973).

    Google Scholar 

  4. Yu. B. Paderno, É. A. Pugach, V. I. Lazorenko, et al., “High-temperature oxidation of single crystal lanthanum hexaboride” Poroshk. Metall., No. 4, 74–78 (1984).

    Google Scholar 

  5. M. I. Timofeeva and E. N. Timofeeva, “Physicochemical properties of hexaborides of lanthanoides” Izv. Akad. Nauk SSSR, Neorg. Mater.,4, No. 10, 1789–1791 (1968).

    Google Scholar 

  6. N. A. Toropov, V. P. Barzakovskii, V. V. Lapin, and N. N. Kurtseva, Phase Diagrams of Silicate Glasses [in Russian], Vol. 1, Nauka, Leningrad (1969).

    Google Scholar 

  7. V. A. Lavrenko, Yu. G. Gogotsi, and V. Zh. Shemet, “High-temperature oxidation of silicon nitride powder in nonisothermal conditions” Izv. Akad. Nauk SSSR, Neorg. Mater.,21, No. 2, 258–261 (1985).

    Google Scholar 

  8. G. V. Samsonov and I. M. Vinitskii, Refractory Compounds [in Russian], Metallurgiya, Moscow (1976).

    Google Scholar 

  9. I. T. Goronovskii, Yu. P. Nazarenko, and E. F. Nekryach, A Brief Chemistry Handbook [in Russian], Naukova Dumka, Kiev (1974).

    Google Scholar 

  10. A. P. Pomytkin, “Kinetics of high-temperature oxidation of carbides of titanium, niobium, chrome, boron and silicon in oxygen” Author's Abstract of Candidate's Dissertation, Chemical Sciences, Kiev (1976).

    Google Scholar 

  11. V. A. Lavrenko, Yu. G. Gogotsi, and I. N. Frantsevich, “High-temperature oxidation of hot-pressed boron oxide” Dokl. Akad. Nauk SSSR,275, No. 1, 114–117 (1984).

    Google Scholar 

  12. R. F. Voitovich, Oxidation of Carbides and Nitrides [in Russian], Naukova Dumka, Kiev (1981).

    Google Scholar 

  13. I. L. Knunyants, Chemical Encyclopedic Dictionary [in Russian], Sov. Éntsiklopediya, Moscow (1983).

    Google Scholar 

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Translated from Poroshkovaya Metallurgiya, No. 11(299), pp. 56–59, November, 1987.

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Gogotsi, Y.G., Kotlyar, D.A., Kresanov, V.S. et al. High-temperature oxidation of sintered lanthanum hexaboride. Powder Metall Met Ceram 26, 914–917 (1987). https://doi.org/10.1007/BF00794111

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  • DOI: https://doi.org/10.1007/BF00794111

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