The Change in Reflecting Power Caused by Tarnishing Electrodeposited Silver-Cadmium Alloys
- 1 January 1931
- journal article
- Published by The Electrochemical Society in Transactions of The Electrochemical Society
- Vol. 59 (1) , 337-351
- https://doi.org/10.1149/1.3497796
Abstract
Silver‐cadmium alloys may be deposited from a commercial cadmium plating bath to which silver cyanide has been added. The composition of the alloy depends on the silver concentration in the bath (if the cadmium content remains constant) and on the cathode current density. The co‐deposition of silver lowers the reflecting power of electrodeposited cadmium. The tarnishing of the alloys depends both on the composition and on the rate of deposition, and is materially less than that of pure silver. A silver‐cadmium alloy containing about 24 per cent of silver recommends itself as the best general purpose reflector. Its reflecting power is equal to that of pure cadmium, and it is considerably harder and more resistant to abrasion than pure electrodeposited cadmium.Keywords
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