PYROPHOSPHATE CONTAINING ELECTROLYTE FOR DEPOSITING TIN-ZINC ALLOY Russian patent published in 2007 - IPC C25D3/60

Abstract RU 2292408 C1

FIELD: electroplating processes for deposition of tin-zinc alloy coatings.

SUBSTANCE: electrolyte for deposition of coatings of tin-zinc alloy including 70 - 80% of tin contains, g/l: tin (II) chloride with 2 molecules H₂O (on conversion to metal), 17 - 19; zinc sulfate with 7 molecules H₂O (on conversion to metal) 3.5 - 7.5; sodium pyrophosphate with 10 molecules H₂O, 130 - 155; gelatin, 1 - 2; methylene blue (m. m. 373.9), (0.05 - 1.0)x10^-3 mol/l.

EFFECT: possibility for depositing semi-bright tin-zinc alloy coatings having good cohesion with base, increased electric current yield, improved stability of electrolyte.

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RU 2 292 408 C1

Authors

Vinogradov Stanislav Nikolaevich

Nikolotov Aleksej Dmitrievich

Dates

2007-01-27—Published

2005-10-12—Filed