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The Use of Platinum Metals in Modern Thermionic Emitters
The performance of dispenser cathodes has been considerably improved over the last quarter of a century. This review considers advances made in the materials used either for the matrix of the thermionic emitter, or to coat its surface, which have resulted in lower effective work functions.
The use of iridium, osmium and ruthenium has played a significant role in this improvement.
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Document Type: Research Article
Publication date: October 1, 1982
Johnson Matthey's journal of research on the platinum group metals and developments in their application in industry from 1957-2014. It has now been renamed the Johnson Matthey Technology Review
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