Filtern
Erscheinungsjahr
Dokumenttyp
- Zeitschriftenartikel (54)
- Beitrag zu einem Tagungsband (38)
- Beitrag zu einem Sammelband (12)
- Vortrag (6)
- Posterpräsentation (4)
- Forschungsbericht (1)
Sprache
- Englisch (102)
- Deutsch (12)
- Mehrsprachig (1)
Schlagworte
- Corrosion (44)
- CCS (41)
- Steel (35)
- CO2-storage (18)
- Pipeline (17)
- High temperature corrosion (12)
- CO2-injection (9)
- Heat treatment (8)
- Supercritical CO2 (7)
- Aquifer (6)
Organisationseinheit der BAM
- 5.1 Mikrostruktur Design und Degradation (41)
- 5 Werkstofftechnik (40)
- 7 Bauwerkssicherheit (6)
- 7.6 Korrosion und Korrosionsschutz (6)
- 5.6 Glas (2)
- 8 Zerstörungsfreie Prüfung (2)
- 8.3 Thermografische Verfahren (2)
- 4 Material und Umwelt (1)
- 4.2 Material-Mikrobiom Wechselwirkungen (1)
- 5.2 Metallische Hochtemperaturwerkstoffe (1)
Eingeladener Vortrag
- nein (6)
We present a new method for the complete three-dimensional (3D) calibration of scanning probe microscopes (SPM) and other high-resolution microscopes, e.g., scanning electron microscopes (SEM) and confocal laser scanning microscopes (CLSM), by applying a 3D micrometre-sized reference structure with the shape of a cascade slope-step pyramid. The 3D reference structure was produced by focused ion beam induced metal deposition. In contrast to pitch featured calibration procedures that require separate lateral and vertical reference standards such as gratings and step height structures, the new method includes the use of landmarks, which are well established in calibration and measurement tasks on a larger scale. However, the landmarks applied to the new 3D reference structures are of sub-micrometre size, the so-called 'nanomarkers'. The nanomarker coordinates are used for a geometrical calibration of the scanning process of SPM as well as of other instrument types such as SEM and CLSM. For that purpose, a parameter estimation routine involving three scale factors and three coupling factors has been developed that allows lateral and vertical calibration in only one sampling step. With this new calibration strategy, we are able to detect deviations of SPM lateral scaling errors as well as coupling effects causing, e.g., a lateral coordinate shift depending on the measured height position of the probe.
Der Klimaschutz erfordert die Reduzierung des Ausstoßes von Kohlendioxid. Neue Kraftwerke mit Sauerstoffverbrennung und möglicherweise CO2-Abscheidung sollen eine Reduktion des CO2 im Bereich der Energietechnik ermöglichen. Die heute üblichen Hochtemperaturwerkstoffe werden anderen Umgebungsbedingungen ausgesetzt, und es sind andere Korrosionsraten und Korrosionsreaktionen zu erwarten. In diesem Beitrag werden die Kraftwerkstechnologien kurz vorgestellt und an einem Beispiel erläutert, dass die Oxidation an Luft mit der Oxidation in Wasser nicht direkt vergleichbar ist.
Influence of pressure and chromium content on corrosion reactions at 600°C in a CO2-H2O atmosphere
(2008)
CO2-corrosion of injection pipe steels is a relevant safety issue when emission gasses are compressed in deep geological layers (CCS). The reliability of the steels used at the geological onshore CCS-site at Ketzin, Germany, is demonstrated in laboratory experiments under an equivalent corrosive environment (T=60 °C,p=1-60 bar, aquifer water, CO2-flow rate of 3 l/h, 700 h8000 h heat treatment). Corrosion kinetics and microstructures were characterized using samples of the heat treated steel 1.7225 (AISI 4140, 42CrMo4) used for casing, and samples of the martensitic stainless injection-pipe steel 1.4034 (AISI 420, X46Cr13).