The Relation between Decarburization and Oxidation of the Steels Heated at High Temperatures in Ambient Air

0177796 - UFM-A 20013319 RIV CZ eng J - Článek v odborném periodiku
Kučera, Jaroslav - Adamaszek, K.
The Relation between Decarburization and Oxidation of the Steels Heated at High Temperatures in Ambient Air.
Acta Technica CSAV. Roč. 46, - (2001), s. 51-60. ISSN 0001-7043
Grant CEP: GA ČR GA106/98/1367
Výzkumný záměr: CEZ:AV0Z2041904
Klíčová slova: (Fe-C-Mn-Si-Cr-Ni-Mo-W) steels * oxidation * decarburization
Kód oboru RIV: JG - Hutnictví, kovové materiály

The results of investigation of decarburization and surface oxidation of (Fe-C-Cr-Mn-Si) steels at high temperatures are reported. The oxidation anneals were carried out at the temperatures 940 up to 1100°C. The time periods of decarburization anneals amounted to 6075-7830 min and to 180-910 min in oxidation anneals. The measured carbon concentration profiles N(C,x,t) enabled us to state the carbon diffusion coefficients D(C), and the measured scale thicknesses l(T, t) the oxidation coefficients kp. Both the values D(C) and kp satisfy Arrhenius plots and D(C) is directly proportional to kp.
Trvalý link: http://hdl.handle.net/11104/0074703