A process for the preparation of a cold electrode for use in a gas discharge charge roehre and cold electrode for use in a gas discharge charge roehre

摘要

The electrode is produced by (a) preparing a powdered Gp. IVA or VA metal (I) and also a Gp. IA or IIA metal (II) by decompsn. below the relevant activation temp.; (b) dissolving (II) in a volatile solvent (III); (c) mixing (I) with the (II) soln., to give (II) -coated (I) particles; (d) forming these into the electrode, (e) sintering and activating and thus forming electrode platelets; (f) consolidating these mechanically to a rod of metal with relatively high m.pt.; (g) placing the resultant electrode in the vessel of a gas discharge tube, evacuating this and filling with the desired gaseous filler; and (h) activating the electrode by electric impulse(s). This results in a considerable improvement in the operation, electron emission efficiency and life of the tube. The prefd. materials are: (I) Zr (or Ta); (II) Cs; and (II) alcohol.