TY - JOUR
AU - Srolovitz, D. J.
AB - Carburization is a major mode of corrosive degradation of high chromium alloy materials in many high temperature processes. The process generally involves the transfer of carbon from the gas phase onto the alloy surface followed by diffusion of carbon to the alloy interior with concurrent precipitation of chromium‐rich carbide phases. The kinetics of this overall process has been determined by thermogravimetry in the temperature range 1173–1373 K using Fe‐20 Cr and Ni‐30 Cr model alloy systems and  gas mixtures to provide the carburizing medium. Mathematical expressions for the overall kinetics have been developed in terms of surface reaction and diffusion steps. Both processes contribute to carburization, the influence of the surface reaction step increasing with increase in temperature. Additions of sulfur as  to the gas phase slows down the surface reaction step sufficiently so that the whole carburization process can become surface reaction controlled.
TI - Carburization Mechanisms of High Chromium Alloys
JF - Journal of the Electrochemical Society
DO - 10.1149/1.2114333
DA - 1985-09-01
UR - https://www.deepdyve.com/lp/iop-publishing/carburization-mechanisms-of-high-chromium-alloys-LASbgIhSqB
SP - 2268
EP - 2274
VL - 132
IS - 9
DP - DeepDyve
ER -