鉄道信号用継電器の異常腐食について
1963 年 12 巻 4 号 p. 185-187
詳細
1963 年 12 巻 4 号 p. 185-187
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.
