Chemical Engineering - Chemical Engineering Basics - Discussion

45. 

Corrosion of metals can not be prevented by its

[A]. tempering
[B]. chromising
[C]. aluminising
[D]. alloying

Answer: Option A

Explanation:

No answer description available for this question.

K.Maheshkumar said: (Feb 25, 2018)  
Please explain tempering.

Sai Kiran said: (Sep 2, 2018)  
It improves the hardness and elasticity of (steel or other metal) by reheating and then cooling it.

Surendra Kumar Prajapati said: (Dec 18, 2018)  
Tempering, in metallurgy, process of improving the characteristics of a metal, especially steel, by heating it to a high temperature, though below the melting point, then cooling it, usually in air. The process has the effect of toughening by lessening brittleness and reducing internal stresses.

Hitesh said: (Nov 5, 2020)  
Once we heat the iron base metal (steel etc) at very high temperature (840 C to 1000 C) and then suddenly cooled with water, it is referred as austenitizing while again we reheat it (450 C to 720 C) and sudden cool with water it is called as tempering.

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