Question

Which of the following is/are the stabilizing elements to minimize intergranular corrosion of stainless steel?

(a) Niobium

(b) Columbium

(c) Titanium

(d) Niobium, columbium, and titanium

The question was posed to me in a national level competition.

I'd like to ask this question from Eight Forms in chapter Eight Forms of Corrosion of Corrosion Engineering

Answer 1

Correct choice is (d) Niobium, columbium, and titanium

The best I can explain: Stabilizing elements are the elements that form strong carbides than chromium. These elements have a much greater affinity to carbon than does chromium, this minimizes the chromium depleted zone.