The results of the derived mathematical model were found to be in a good agreement with the experimental data. Interpretation was carried out between calculated and experimental results. The current regression model was used to predict the mass gain within temperature range 500 oC – 800 oC up to 8 hours. The combination effect of nickel with nitrogen, time, and / or temperature has negative effect on mass gain with certain extent. Nitrogen has a little positive effect in increasing mass gain. The model showed that nickel has highest positive effect in retardation mass gain, while time and temperature enhance mass gain. The factorial design was based and applied for previous published work. Where, & are nitrogen and nickel concentration in weight percent, T is temperature in Celsius, and t is time in hour. Therefore, 24 factorial design and MatLab program were used to the derived regression model. This article aims at estimation the contribution effect of nickel, nitrogen, time and temperature on the oxidation behavior of austenitic stainless steels.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
March 2023
Categories |