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Regular version of the site

Article

Application of Hydrogen Vacuum Treatment of Palladium Powders for Production of Efficient Metal Alloy Cathodes of Self-Heated Magnetron

Inorganic Materials: Applied Research. 2012. Vol. 3. No. 5. P. 381-384.
Li I. P., Bondarenko G.

A method to improve emission homogeneity of pressed palladium–barium cathodes applied in magnetrons with self-heating initiation is proposed. The initial palladium powder is annealed at 950°C for 60 min and then calcined in vacuum under pressure of residual gases P ≤ 1 × 10–4 Pa. It is demonstrated that cathodes produced by pressing and subsequent sintering of a powdered mixture of palladium and intermetallic compound Pd5Ba in vacuum are characterized by a high distribution homogeneity of components. Within testing of magnetrons produced with such cathodes, the yield of good items is increased by a factor of 1.5.