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MM: Fachverband Metall- und Materialphysik

MM 21: Hydrogen in metals IV: Special topics

MM 21.2: Talk

Tuesday, March 17, 2015, 10:45–11:00, TC 006

A novel method for detecting hydrogen in metals at high local resolution and with ultra-high sensitivity — •Michael Rohwerder — Max-Planck-Institut für Eisenforschung GmbH

Already very low hydrogen concentrations can cause hydrogen embrittlement of high strength materials. In this presentation a novel method will be presented that allows the spatially resolved, ultra-sensitive measurements of hydrogen in steels and other alloys as well as its uptake into and permeation through them [1-4]. Several examples demonstrating the capabilities of this novel, Kelvin probe based technique will be presented. Finally, an example will be given demonstrating the role of localized hydrogen enrichments for hydrogen embrittlement of TWIP steels.

References:

[1] C. Senöz, S. Evers, M. Stratmann and M. Rohwerder, Electrochem. Commun. 13 (2012)1542

[2] S. Evers, M. Rohwerder, Electrochem. Commun. 24 (2012) 85

[3] S. Evers, S. Ceylan, M. Rohwerder, Science and Technology of Advanced Materials 14 (2013) 014201

[4]S. Evers, C. Senöz, M. Electrochimica Acta 110 (2013) 534