Heat resistance of palladium-plated molybdenum and antiemission properties of a palladium coating on molybdenum
To determine the physical mechanism of the action of a Pd coating, an x- ray-diffraction investigation of grids treated in experimental tubes was conducted. Unfiltered lambda CrK/sub alpha / radiation was used; the photographa were taken on a URS-60 apparatus, RKU-114M camera, D = 114.7 mm. On the x-ray diffraction picture, the lines of the intermetallic compound Pd/sub 2/ Ba are sufficiently clearly revealed. The opinion exists that the formation of such a compound under the conditions of operation of a tube with grid temperature 500 to 800 deg C is relatively improbable and is possible at 900 deg C. It is concluded that the anti-emission properties of Pd, like those of Au, are determined by its ability to bond Ba atoms into a stable intermetallic compound with a sufficiently high electron work function. (auth)
- Research Organization:
- Moscow Inst. of Steel and Alloys
- NSA Number:
- NSA-29-016227
- OSTI ID:
- 4362062
- Journal Information:
- Prot. Metals (USSR) (Engl. Transl.), v. 8, no. 6, pp. 658-659, Other Information: Orig. Receipt Date: 30-JUN-74; Related Information: Translated from Zashch. Metal.; 8: No. 6, 724-726(1972)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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