日本金属学会誌

J. Japan Inst. Metals, Vol. 17, No. 8 (1953),
pp. 382-386

Iron Plate Coated with Aluminum for Vacuum Tube (I) Influence of the Thickness of Aluminium and the Properties of Iron for Evolution of Gases from Aluminium Coated Iron Plate

N. Saito, T. Ôtsuki and K. Motoyama


Abstract:

We measured gased from an iron plate evaporated with aluminium in vacuum, we obtained the following results: Carbon monoxide from iron plates decreases in inverse proportion with the thickness of aluminium and coating 0.005 mm of aluminium on an iron plate, 0.04% in carbon content and 0.12 mm in thickness, only hydrogen was diffused and 90% of the CO diffussion was stopped. The thicker the iron plate is and the more carbon it contains, the less becomes the stopping effect of the aluminium coating of the thickness mentioned above.


(Received 1953/3/10)

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