If we give Methanol(CH3OH), LPG(C3H8+C4H10), Ammonia gas(NH3) into the furnace to carbo-nitride low carbon steels, I want to know the detailed chemical reactions that happen inside the furnace and how carbon get indused into steel. Suggest some links where I get the information. Urgent please.
2006-12-05 01:22:49 · 1 answers · asked by Indian 2 in Science & Mathematics ➔ Engineering
Gas atoms such as Carbon and Nitrogen are used in this manner to "case harden" a steel by providing a harder outer layer. To carburize, a carbon source must be present, which is the chemicals you listed. Nitriding requires the same. I'm afraid I can't tell you the chemical reactions, but I can explain how the carbon and nitrogen enter the steel.
The carbon and nitrogen enter the steel by simple diffusion. Wherever there is a gradient, or change in concentration, diffusion must happen to reach equilibrium. In this case, a gas rich in carbon and nitrogen surrounds the steel in a furnace. Diffusion is highly temperature dependent, so as these gases are left in with the steel, some of the atoms enter the surface layer.
2006-12-05 01:44:41 · answer #1 · answered by fletchermse 2 · 0⤊ 0⤋