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Asked: 2020-06-18T15:50:00+05:30 In:

GATE MT 2018 Q9. Which of the following materials are protected by passivation (i.e., formation of a thin adherent film on the surface) from corrosion? P.Aluminium alloys Q.Mild steel R.Stainless steel S.Silver

Poll Results

20.99%(A) P & Q ( 17 voters )
8.64%(B) Q & R ( 7 voters )
9.88%(C) Q & S ( 8 voters )
60.49%(D) P & R ( 49 voters )
Based On 81 Votes

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GATE MT 2018 Q9. Which of the following materials are protected by passivation (i.e., formation of a thin adherent film on the surface) from corrosion? P.Aluminium alloys Q.Mild steel R.Stainless steel S.Silver
corrosionGATE MT 2018 Question Paper With SolutionGATE MT Previous Year Questions With SolutionGATE MT Thermodynamics
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    3 Answers

    1. Platinum Metallurgical and Materials Engineering student

      Option D is correct

      Option D is correct

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    2. official account of Askmemetallurgy

      Correct answer is option D. Passive film materials are stainless steels (Cr2O3) and Aluminium alloys ( Al2O3).  

      Correct answer is option D.

      Passive film materials are stainless steels (Cr2O3) and Aluminium alloys ( Al2O3).

       

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    3. Platinum GATE Metallurgy Coaching

      Al forms Al2O3 and SS forms Cr2O3

      Al forms Al2O3 and SS forms Cr2O3

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