著者

青山 芳夫

出版者

Japan Society of Corrosion Engineering

雑誌

防蝕技術 (ISSN:00109355)

巻号頁・発行日

vol.12, no.4, pp.185-187, 1963-04-15 (Released:2009-11-25)

参考文献数

15

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The relays for railway signaling systems are abnormally attacked, when they are used under such conditions that electric discharges frequently take place on the surfaces of their contact points. As the corrosion products, silver nitrate (AgNO3) and basic copper nitrate [3Cu(OH)2⋅Cu(NO3)2] are formed on the surfaces of silver contacts and nickel coated bronze springs respectively. For the identification of these corrosion products, the interference and absorption procedures are found to be suitable.