Nitriding is a process of hardening steel by treating it inan atmosphe

1.	Nitriding is a process of hardening steel by treating it inan atmosphere ofA. `NH_(3)`B. `H_(2)S`C. `N_(2)`D. `O_(3)`
Answer» Correct Answer - A The process of producing a hard coating of iron nitride on surface of steel is called nitrding. To achieve this, steel is heated in the atmosphere of dry `NH_(3)` at `500 - 600^(@)C` for about 3 to 4 days when a hard coating of iron nitride is produced on the surface.

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Nitriding is a process of hardening steel by treating it inan atmosphere ofA. `NH_(3)`B. `H_(2)S`C. `N_(2)`D. `O_(3)`

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