出典:Wikipedia
出典:『Wikipedia』 (2011/05/04 21:12 UTC 版)
A reducing atmosphere, also known as a reduction atmosphere, is an atmospheric condition in which oxidation is prevented by removal of oxygen and other oxidising gases or vapours. Usually nitrogen is used or in more extreme conditions hydrogen gas. In that case the atmosphere is reducing. It is used in annealing ovens for relaxation of metal stresses without corroding the metal.