Predicting the depletion of chromium in two high temperature Ni alloys
Source abstract
Abstract
Abstract The oxidation resistance of the high temperature Ni-Cr alloys alloy 601 and alloy 602 CA was studied. Based on microanalysis data from cyclic oxidation experiments performed in a burner test rig, the total loss of chromium in the alloy was determined. A numerical analysis using the general diffusion equation was performed to model the mass transport for the observed chromium loss. Chromium depletion profiles were calculated with an effective diffusion coefficient derived from the data of the shortest exposure time. Good agreement was found between the measured and the computed chromium concentration at the alloy-oxide interface for longer exposure.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Nuclear Materials and Properties · High Temperature Alloys and Creep
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (17)
Show source-provided references
1. Service conditions and their influence on the oxide scale formation on metallic high temperature alloys for the application in innovative combustion processes10.1002/maco.200503898 ↗
2. Oxide scale formation on Al containing Ni–Cr-based high temperature alloys during application as flame tube material in recirculation oil burners10.1002/maco.200804119 ↗
3. Oxidation behaviour of selected wrought Ni base high temperature alloys when used as flame tube material in modern blue flame oil burners10.1016/j.corsci.2007.05.021 ↗
4. Die Oxydation von Kobalt–Chrom–Kohlenstoff-Legierungen
5. Oxidation und Aufkohlung hochlegierter Werkstoffe für Crackrohre- Teil2: Das Aufkohlungsverhalten in sauerstoff und kohlenstoffhaltigen Atmosphären hoher Kohlenstoffaktivität10.1002/maco.19800310202 ↗
6. Mixed-oxidant attack of high-temperature alloys in carbon- and oxygen-containing environments10.1007/BF00664423 ↗
7. Sub-scale depletion and enrichment processes during high temperature oxidation of the nickel base alloy 625 in the temperature range 900–1000°C10.1007/s11085-010-9225-3 ↗
8. The design of iron–chromium–nickel alloys for use at high temperatures10.1007/BF00609924 ↗
9. Theoretical analysis of the diffusion processes determining the oxidation rate of alloys10.1149/1.2779605 ↗
10. Young · 2008
11. The oxidation of finite samples of heat-resistant alloys10.1016/S0010-938X(72)80016-7 ↗
12. H. Cowen, S. Webster, Chromium depletion during oxidation of stainless steel foils, in: B.N.E.S. International Conference on Corrosion of Steels in CO2, London, 1974.
13. Silicon and chromium depletion during the long-term oxidation of thin-sectioned austenitic steel10.1023/A:1018808925756 ↗
14. Crank · 1975
15. Calculation of precipitate dissolution zone kinetics in oxidising binary two-phase alloys10.1016/S1359-6454(96)00054-7 ↗
16. Diffusion in Iron
17. Computational modeling of mixed oxidation–carburization processes: Part 110.1007/BF00665264 ↗