材料期刊网

Kinetics of Nitrogen Diffusion in Granular Manganese

ZHANG Jinzhu , XU Chushao , ZHAO Yueping

钢铁研究学报(英文版)

The kinetics and the influence of time on granular manganese nitriding were studied by means of a vacuum resistance furnace, Xray diffraction technique, and LECO TC436 oxygen/nitrogen determinator. The longer the nitriding time, the more the nitrogen pickup. Except for a trace of oxide MnO that developed, the metal manganese could thoroughly be nitrided to form Mn4N and a little ζphase (the stoichiometric components as Mn2N) with the nitriding time lasting. A kinetic model is developed to reveal the nitriding situation and agrees well with the experimental results.

关键词: granular manganese;kinetics;nitridation;nitride