TY - GEN
T1 - Gas corrosion of chromium-manganese steel in atmospheres with low oxygen partial pressure
AU - Przeliorz, Roman
AU - Piatkowski, Jarosław
PY - 2014
Y1 - 2014
N2 - Studies were conducted on the kinetics and mechanism of oxidation of chromiummanganese steel under partial oxygen pressure po2 from 10-11 to 10-2 Pa at a temperature of 1173 K. The low oxygen partial pressure was produced in a gas mixture of CO-CO2 and helium containing 0.2 ppm of oxygen. The kinetics of oxidation was examined by thermogravimetry using a thermobalance made by Setaram Company. Scale growth mechanism was determined with the use of markers. The oxidation products were analyzed by scanning electron microscopy (SEM, EDS). It was found that at low partial pressure of oxygen, MnO oxide was forming on the steel surface. From an analysis of the curves of the steel weight growth per unit surface in function of time it followed that the oxidation assumed a parabolic course. A relationship has been determined between the coefficient of self-diffusion of manganese in MnO and the oxygen partial pressure.
AB - Studies were conducted on the kinetics and mechanism of oxidation of chromiummanganese steel under partial oxygen pressure po2 from 10-11 to 10-2 Pa at a temperature of 1173 K. The low oxygen partial pressure was produced in a gas mixture of CO-CO2 and helium containing 0.2 ppm of oxygen. The kinetics of oxidation was examined by thermogravimetry using a thermobalance made by Setaram Company. Scale growth mechanism was determined with the use of markers. The oxidation products were analyzed by scanning electron microscopy (SEM, EDS). It was found that at low partial pressure of oxygen, MnO oxide was forming on the steel surface. From an analysis of the curves of the steel weight growth per unit surface in function of time it followed that the oxidation assumed a parabolic course. A relationship has been determined between the coefficient of self-diffusion of manganese in MnO and the oxygen partial pressure.
KW - Cr-Mn steels
KW - Diffusion
KW - Oxidation
KW - Thermogravimetric analysis
UR - https://www.scopus.com/pages/publications/84891461368
U2 - 10.4028/www.scientific.net/SSP.212.157
DO - 10.4028/www.scientific.net/SSP.212.157
M3 - Conference contribution
AN - SCOPUS:84891461368
SN - 9783037859452
T3 - Solid State Phenomena
SP - 157
EP - 162
BT - Technologies and Properties of Modern Utility Materials XXI
PB - Trans Tech Publications Ltd.
T2 - 21st Conference on Technologies and Properties of Modern Utility Materials, TPMUM 2013
Y2 - 17 May 2013 through 17 May 2013
ER -