Technology Development of Continuous Synthesis of Active Substance for Dispenser Cathode

Anna O. Bezmaternykh; Yuriy B. Shvaljov; Viktor N. Kudiiarov

doi:10.4028/www.scientific.net/KEM.712.211

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Technology Development of Continuous Synthesis of Active Substance for Dispenser Cathode
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 712Technology Development of Continuous Synthesis of...

Technology Development of Continuous Synthesis of Active Substance for Dispenser Cathode

Abstract:

Barium aluminates have been obtained by the method of continuous precipitation at different values of pH. The method of thermal analysis showed that the main mass losses which are connected with dehydration processes occur in the temperature interval from 50 °C to 100 °C and from 150 °C to 200 °C. In addition, mass loss occurs in the temperature interval from 780 °C to 1000 °C which can indicate barium aluminate formation. XRD analysis was applied to determine phase composition of obtained substance and showed formation of Ba₁_.₁₇Al₁₀_.₆₇O₁₇_.₁₇ and BaAl₂O₄ at pH 6.5; 7.0 and 7.5 respectively. Significant influence of pH on precipitation composition has not been detected.

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Periodical:

Key Engineering Materials (Volume 712)

Pages:

211-214

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.712.211

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Online since:

September 2016

Authors:

Anna O. Bezmaternykh*, Yuriy B. Shvaljov, Viktor N. Kudiiarov

Keywords:

Barium Aluminate, Continuous Synthesis, Precipitation

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References

[1] C. Higashi, N. B. de Lima, J. R. Matos, C. Giovedi, C. C. Motta, Electron emitting barium-calcium aluminate obtained from chemical solution techniques, IMOC. (2005) 345-348.

DOI: 10.1109/imoc.2005.1580014

Google Scholar

[2] Y.T. Cui, J.S. Wang, W. Liu, X. Wang, K.F. Wang K, Fabrication of aluminate for scandia doped dispenser cathode and emission property, J. Inorg. Mater. 27 (2012) 480-484.

DOI: 10.3724/sp.j.1077.2012.00480

Google Scholar

[3] Y. Cui, J. Wang, W. Liu, Y. Wang, M. Zhou, Characterization of scandia doped pressed cathode fabricated by spray drying method, Appl. Surf. Sci. 258 (2011) 327– 332.

DOI: 10.1016/j.apsusc.2011.08.059

Google Scholar

[4] A.A. Maklakov, E.P. Ostapchenko. XRD research of kinetics of barium and calcium aluminates formation and tungstates, J. struct. chem. 1 (1960) 178 - 182 (in Russian).

DOI: 10.1007/bf00738934

Google Scholar

[5] X. Ye, W. Zhuang, C. Deng, W. Yuan, Z. Qiao, Thermodynamic investigation on the Al2O3–BaO binary system. Calphad. 30 (2006) 349–353.

DOI: 10.1016/j.calphad.2005.12.004

Google Scholar

[6] L.D. Bystritskii, N.N. Dolzhenko, N.H. Stavitskaya, E.V. Stepanova, D.E. Sharygin, Y.B. Shvalev, RF Patent 2171678, A61K33/08. (2001).

Google Scholar