Flux analysis of nitrogen and carbon during nitriding and FNC Heat Treating

As part of a project to develop simulation software for the FNC process an experimental investigation of the total fluxes of nitrogen and carbon was conducted. The total mass increase of each test samples was measured and converted to total flux and flux as a function of time. The nitrogen and carbon concentration profiles were measured in the hardened case. The weigh gain due to compound layer growth and the weight gain in the case were analyzed. The results are presented as a function of KN and KC in the gas atmosphere. These experimental results are compared with the predictions from our simulation software.