Acceleration of phosphating processes by electrochemical methods
- 1 January 1984
- journal article
- research article
- Published by Taylor & Francis in Transactions of the IMF
- Vol. 62 (1) , 64-69
- https://doi.org/10.1080/00202967.1984.11870674
Abstract
Electrochemical acceleration using potentiostatic control has revealed that in zinc-containing solutions two passive regions occur. The first region of -400 to -100m V (SCE) corresponds to the formation of hopeite; the second region of +400 to + 1400mV(SCE) corresponds to the formation of phosphophyllite. For manganese-containing solutions only one passive region occurs. The coatings produced were characterised by high coating weights (15–30g/m2) and low porosity values (<0.5%).Keywords
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