OUTGASSING OF HYDROGEN M. Leisch

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Institute of Solid State Physics 3D atom probe result after vacuum firing % 100 90 80 70 60 50 40 30 20 10 0 0 2 4 6 8 10 12 atomic layer Cr Ni Fe Depth profile of a 304 stainless steel sample after vacuum firing (20s@ 900°C). Professor Manfred <strong>Leisch</strong> Horst Cerjak, 19.12.2005 63rd IUVSTA Workshop Avila September 17, 2010 49
Institute of Solid State Physics Atom probe results • After vacuum firing an enrichment of Nickel was found within the first atomic layer. • Chromium depletion on the first atomic layer after vacuum firing. • Thermodynamic model calculation of first atomic layer composition gives equalitative explanation for behavior. • Consequences of Ni enrichment on surface? Professor Manfred <strong>Leisch</strong> Horst Cerjak, 19.12.2005 63rd IUVSTA Workshop Avila September 17, 2010 50
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OUTGASSING OF HYDROGEN M. Leisch

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