Sodium tungstate is an anode passivation film type corrosion inhibitor, and its corrosion inhibition performance is better than that of molybdenum and phosphorus. It has good corrosion inhibition effect on plain steel, red copper, copper alloy, aluminum and zinc. When single sodium tungstate is used as the corrosion inhibitor, the dosing amount is relatively large, about WO~- 200mg/L or more, and the cost is high.
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