The paper introduces the corrosion prevention of the automatic instruments for thermopair,resistance thermometer, transmitter, flowmeter levelmeter in Chemical processes.
Based on different soil corrosion factors and pipe corrosion principle, obligated current negode protection and sacrifice anode protection can be used here.
The passivation patinas and the composition of each phases becoming more homogeneous are moderator to the dealuminization corrosion of high aluminum bronze.