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Which of the following alloys exhibits intergranular corrosion by steam and marine atmospheres?(a) Die-cast zinc alloy(b) Duralumin alloy (Al-Cu)(c) Both die-cast zinc alloy and duralumin alloy(d) Neither die-cast zinc alloy nor duralumin alloyThis question was posed to me in a national level competition.Asked question is from Eight Forms in chapter Eight Forms of Corrosion of Corrosion Engineering |
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Answer» RIGHT choice is (a) Die-cast ZINC alloy For explanation: Die-cast zinc alloys containing aluminum exhibit intergranular CORROSION by steam and marine atmosphere. Whereas duralumin alloys are ALSO susceptible to intergranular corrosion in a different atmosphere. |
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