Electrochemical behaviour of the tin anode in alkaline-stannate plating baths
β Scribed by S.S.Abd El Rahim; A. El Sayed; A.A. El Samahi
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 688 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0257-8972
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π SIMILAR VOLUMES
When an oxide-free tin surface is anodically polarized in deaerated 0.1 M sodium borate at a c.d. of about 6 #A/cm ~ the potential of the tin remains constant at first at --0-85 V vs. Ag/AgCI. Half the current is used for oxide formation and half for tin dissolution. This process continues even when
Galvanostatic cyclic anodic and cathodic polarization curves of seven copper-tin alloys were traced on O-01, O-1 and 2N NaOH solutions at 25". The tin content of the alloys was varied between 8 and 76 wt-%. The results obtained are explained in relation to the phase diagram of the copper-tin system.
Tin-amalgams of varying concentrations were oxidized galvanostatically in O-01,0-10 and 2~00 N NaOH solutions at 25Β°C. For each amalgam and solution composition a number of constant polarizing currents were used and cyclization was repeated until the oxidation (reduction) features of the amalgam bec