Funct. Mater. 2013; 20 (4): 485-488.

http://dx.doi.org/10.15407/fm20.04.485

Thermionic emission of LaB6–ZrB2 quasi-binary eutectic alloy with different ZrB2 fibers orientation

A.Taran[1], D.Voronovich[1], D.Oranskaya[1], V.Filipov[2], O.Podshyvalova[1]

[1]National Aerospace University "Kharkiv Aviation Institute",17 Chkalov Str., 61070 Kharkiv, Ukraine
[2]Institute for Problem of Material Science, National Academy of Sciences of Ukraine, 3 Krzhyzhanovsky Str., 03680 Kyiv, Ukraine

Abstract: 

Comparative thermionic properties investigations of the quasi-binary eutectic alloy LaB6–ZrB2 having both zirconium diboride fibers orientations (perpendicular and parallel) relative to the emitting surface were conducted for the first time. Thermionic current density time dependences for cross and longitudinal sections suggest that the eutectic composite material LaB6–ZrB2 can be used as an effective thermionic emitter also with the fibers orientation parallel to the emitting surface.

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References: 

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