Graphitic corrosion Selective leaching

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selective corrosion on cast iron. magnification 100x



selective corrosion on cast iron. magnification 500x


graphitic corrosion selective leaching of iron grey cast iron, iron gets removed , graphite grains remain intact. affected surfaces develop layer of graphite, rust, , metallurgical impurities may inhibit further leaching. effect can substantially reduced alloying cast iron nickel.








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