The excellent corrosion resistance of high-silicon irons is due to the formation of a passive SiO2 surface layer.(a) True(b) FalseI have been asked this question during an interview for a job.My question is based upon Materials in section Materials of Corrosion Engineering

The excellent corrosion resistance of high-silicon irons is due to the

1.	The excellent corrosion resistance of high-silicon irons is due to the formation of a passive SiO2 surface layer.(a) True(b) FalseI have been asked this question during an interview for a job.My question is based upon Materials in section Materials of Corrosion Engineering
Answer» Correct option is (a) True Explanation: High-silicon cast iron is the TYPE of alloy cast IRONS that are formed with high silicon content (up to 14%). The EXCELLENT corrosion RESISTANCE of these alloys is due to the formation of a passive SiO2 layer.

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