|About this Abstract
||Materials Science & Technology 2012
||Steel Product Metallurgy and Applications
||Low-Temperature Acetylene-Based Carburization of 316L Austenitic Stainless Steel
||Yindong Ge, Harold Kahn, Gary Michal, Frank Ernst, Arthur Heuer
|On-Site Speaker (Planned)
Low-temperature gas phase carburization dramatically improves the hardness, wear resistance and corrosion resistance of austenitic stainless steels. However, successful application of this technology requires in situ removal of the spontaneously formed Cr2O3-rich passive film which otherwise inhibits or prevents uptake of carbon during carburization. This has previously been achieved using gaseous HCl, with its obvious negative environmental consequences. We have now demonstrated that acetylene (C2H2) can be used for this “activation” step. The effects of temperature, time and gas composition on the thermodynamics and kinetics of acetylene-based carburization will be discussed, as well as the properties of such interstitially hardened stainless steel.
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