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The effect of lactic acid(C3H6O3) and citric acid(C6H8O7•H2O) in NiP alloy brushing liquid to NiP Alloy Brushing depositing speed and bear to decay ability is studied. Test a certificate, depositing with the increment of the lactic acid content speed to lower after increasing first; With the increment of the citric acid content, the deposition speed lower. When lactic acid content must, when the citric acid content is 5~20 g/l, brushing deposition speed to change not and greatly. Add lactic acid and citric acid two kinds of nets to match in the meantime, the ability obvious exaltation brushes deposition speed of plate the layer and bears corrosion function.

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