A hard, brittle surface layer will develop on some alloys due to exposure to high temperature process streams containing high levels of nitrogen compounds such as ammonia or cyanides, particularly under reducing conditions, is called _______.

Question

Quizplus · Accepted Answer

The process described in the question is called nitriding, which occurs when high-temperature process streams containing nitrogen compounds are exposed to certain alloys. This can create a hard and brittle surface layer on the alloy. Carburization is a similar phenomenon but involves the absorption of carbon instead of nitrogen. Spheroidization is a completely different process, involving the transformation of certain types of carbides into spherical shapes. Therefore, the correct answer is C, nitriding.

A Hard, Brittle Surface Layer Will Develop on Some Alloys