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Formation of Pt–C films by ion beam assisted deposition for the application of suppression thermo-electron emission

✍ Scribed by Tao Feng; Bingyao Jiang; Xi Wang; Xianghuai Liu; Zhuo Sun

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
637 KB
Volume
255
Category
Article
ISSN
0169-4332

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✦ Synopsis

A C T Platinum and carbon were deposited onto the surface of molybdenum grids simultaneously by ion beam assisted deposition. The structure of the Pt-C films was studied by XRD and Raman spectroscopy. The XRD results showed that Pt exhibited mixed strong (1 1 1) and weak (2 0 0) orientations. The Raman spectra showed that the carbon existed in the form of graphite-like phase. Electron emission characteristics from the Mo grid with and without Pt-C films were measured using analogous diode method. The results showed that electron emission from the Mo grid coated with Pt-C films was much less than that from the Mo grid without Pt-C films. The obtained results demonstrated that the Pt-C films are effective grid-coating materials for the application of suppression thermo-electron emission.

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