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腐蚀科学与防护技术 2008
EFFECT OF NANOCRYSTALLIATION ON ELECTROCHEMICAL BEHAVIOR OF M38 SUPERALLOY
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Abstract:
Nanocrystallized coatings(NC) of superalloy M38 were prepared by magnetron sputtering on samples of cast M38 alloy.The electrochemical behavior was investigated by potentiodynamic and capacitance measurements for samples of the cast M38 alloy without and with sputtered coatings.The results showed that M38 NC had higher resistance to pitting corrosion than M38 cast alloy in 3.5% NaCl solution.Although the passive films formed on the cast alloy and the sputtering coating were p-type,however the passive film f...
