氮在金属中主要是化合物状态,亦即以氮化物存在;部分氮在金属中为游离态;有的被金属吸收为填隙型,在晶格内成为固溶体。金属材料中含氮过高,会降低金属的强度,塑性减小,不但给加工工艺带来困难而且直接影响使用性能。因此准确及时地分析金属中氮含量 Nitrogen in the metal is mainly the compound state, that is, the existence of nitride; part of the nitrogen in the metal is free state; some absorbed by the metal as a gap-type, become a solid solution in the lattice. Nitrogen in metal materials is too high, will reduce the strength of the metal, plastic reduction, not only to the processing difficulties but also directly affect the performance. Therefore accurate and timely analysis of metal nitrogen content