Abstract
The work function was measured in a vacuum of 10−5 Torr for magnesia incorporated lanthanum chromite based ceramic designated LC2OM. The results obtained are φ R =2.75eV andA R =0.11 A/cm2 K2 which ensure that LC2OM has favourable electron emission characteristics for MHD hot electrode material. The measurements have been carried out in the temperature range from ambient to 1700 K.
Similar content being viewed by others
References
H.K.Messerle, M.Sakuntala, T.Fu: Proc. 5th Intern. Conf. on MHD Electrical Power Generation, (Munich, FR Germany, 19–23 April 1971), Vol. 2, 325–338 (1971)
A.M.Anthony, J.L.Bourgeois, M.Faucher, J.P.Loup: Proceeding Series of the Symposium on Electricity from MHD (Warsaw, 24–30 July 1968), Vol. 5, 3019–3029 (1968)
H.K.Bowen, B.R.Rossing:Critical Materials Problem in Energy Production, ed. by C.Stein (Academic Press, New York 1976) pp. 311–334
A.M.George, J.R.Pai, V.K.Rohatgi:Improved Lanthanum Chromite Ceramics for High Temperature Electrodes in Open Cycle MHDSystems, 15th Symposium Engineering Aspects of MHD (University of Pennsylvania, Philadelphia, PA (1976)
W.B.Nottingham: In:Handbuch der Physik, Vol.21, ed. by E.Flugge (Springer, Berlin, Göttingen, Heidelberg 1956) pp. 1–175
E.B.Hensley: J. Appl. Phys.32, 301–308 (1961)
J.M.Lafferty: J. Appl. Phys.22, 299–309 (1951)
J.H.Ingold: J. Appl. Phys.34, 2033–2039 (1963)
Author information
Authors and Affiliations
Additional information
Chemistry Division
Rights and permissions
About this article
Cite this article
Pai, J.R., George, A.M. & Rohatgi, V.K. Thermionic emission characteristics of LC20M electrode material in open cycle MHD systems. Appl. Phys. 22, 283–285 (1980). https://doi.org/10.1007/BF00899878
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00899878