Question

Which of the following is/are the types of diffusion coatings?

(a) Sherardizing – zinc

(b) Chromizing – chromium

(c) Alonizing – aluminum

(d) Sherardizing – zinc, chromizing – chromium and alonizing – aluminum

I had been asked this question in an interview for job.

My doubt is from Corrosion Prevention topic in portion Corrosion Prevention of Corrosion Engineering

Answer 1

Correct option is (d) Sherardizing – zinc, chromizing – chromium and alonizing – aluminum

For explanation: Types of diffusion coatings:

i. Sherardizing – zinc

ii. Chromizing – chromium

iii. Alonizing – aluminum

iv. Carburizing – carbon

v. Nitriding – nitrogen.