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Low-temperature diffusion of carbon in iron measured by SIMS technique
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SYSNO ASEP 0354400 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Low-temperature diffusion of carbon in iron measured by SIMS technique Author(s) Čermák, Jiří (UFM-A) RID, ORCID
Král, Lubomír (UFM-A) RID, ORCIDNumber of authors 2 Source Title METAL 2010. Conference proceedings. - Ostrava : Tanger, s.r.o, 2010 - ISBN 978-80-87294-15-4 Pages č. pc2 Number of pages 6 s. Publication form CD-ROM - CD-ROM Action Metal 2010. International Conference on Metallurgy and Materials /19./ Event date 18.05.2010-20.05.2010 VEvent location Rožnov pod Radhoštěm Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords SIMS ; carbon diffusion ; ferrite Subject RIV BJ - Thermodynamics CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation Depth profiling mode of MiniSIMS device was applied to diffusion measurement. As an example, carbon diffusion in BCC iron was studied. There are sparse experimental diffusion data at temperatures below the eutectic horizontal (996 K). This is caused by the fact that direct measurement of carbon diffusion coefficient in ferrite at low temperatures is complicated by very low solubility of carbon. For practical purposes, the extrapolation of high-temperature data to low temperature region is usually used for estimation of diffusioncontrolled kinetics in ferrite alloys. Present work has shown that the SIMS technique can be applied to the study of carbon diffusivity in iron. Special technique was developed, which avoids radio-tracer measurements with C-14. Obtained results are lower than the extrapolated values, which may be due to limited solubility of carbon in iron. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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