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| Naji, M. |
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Dahl, Kristian Vinter
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (60/60 displayed)
- 2023New White Etch Cracking resistant martensitic stainless steel for bearing applications by high temperature solution nitridingcitations
- 2023Process for obtaining a fine-grained martensitic structure component
- 2023Process for obtaining a fine-grained martensitic structure component
- 2022Rapid Screening of the Mechanical Properties of 13 wt%Cr Steels with Uncharted Combinations of C and N Contentscitations
- 2021Densification, microstructure, and mechanical properties of heat-treated MAR-M247 fabricated by Binder Jettingcitations
- 2021Thermochemical surface hardening of Ti-6Al-4V: On the role of temperature and treatment mediacitations
- 2020Synchrotron X-ray diffraction investigation of the effect of cryogenic treatment on the microstructure of Ti-6Al-4Vcitations
- 2020High Temperature Solution Nitriding of Stainless Steels; Current Status and Future Trendscitations
- 2019Corrosion behaviour of Ni and nickel aluminide coatings exposed in a biomass fired power plant for two yearscitations
- 2019High Temperature Solution Nitriding of Stainless Steels; Current Status and Future Trends
- 2019New Developments in High Temperature Solution Nitriding of Stainless Steels
- 2019Nitridation of grate in a biomass-fired boiler
- 2019Danish Experiences in Biomass Corrosion and Recent Areas of Researchcitations
- 2019Danish Experiences in Biomass Corrosion and Recent Areas of Researchcitations
- 2019Effect of service exposure on KCl corrosion attack of AISI 347H FG steelcitations
- 2019Effect of service exposure on KCl corrosion attack of AISI 347H FG steelcitations
- 2019Corrosion of welds in biomass power plantscitations
- 2018Characterization of pack cemented Ni 2 Al 3 coating exposed to KCl(s) induced corrosion at 600 °Ccitations
- 2018Characterization of pack cemented Ni2Al3 coating exposed to KCl(s) induced corrosion at 600 °Ccitations
- 2018Probing the chemistry of adhesion between a 316L substrate and spin-on-glass coatingcitations
- 2018Effect of microstructure on KCl corrosion attack of modified AISI 310 steelcitations
- 2018Effect of microstructure on KCl corrosion attack of modified AISI 310 steelcitations
- 2018High temperature gas nitriding of Cr containing martensitic steels
- 2018Microstructural investigations of Ni and Ni2Al3 coatings exposed in biomass power plantscitations
- 2017Hard Surface Layers by Pack Boriding and Gaseous Thermo-Reactive Deposition and Diffusion Treatmentscitations
- 2017Hard Surface Layers by Pack Boriding and Gaseous Thermo-Reactive Deposition and Diffusion Treatmentscitations
- 2017Effect of ageing on KCl corrosion attack of AISI 347H FG steel
- 2017Effect of ageing on KCl corrosion attack of AISI 347H FG steel
- 2017Multiscale characterization of White Etching Cracks (WEC) in a 100Cr6 bearing from a thrust bearing test rigcitations
- 2017Application of aluminum diffusion coatings to mitigate the KCl-induced high-temperature corrosioncitations
- 2017Application of aluminum diffusion coatings to mitigate the KCl-induced high-temperature corrosioncitations
- 2017Thermochemical Surface Engineering: A Playground for Science and Innovation
- 2017Thermochemical Surface Engineering: A Playground for Science and Innovation
- 2016Low-Temperature Nitriding of Deformed Austenitic Stainless Steels with Various Nitrogen Contents Obtained by Prior High-Temperature Solution Nitridingcitations
- 2016Low-Temperature Nitriding of Deformed Austenitic Stainless Steels with Various Nitrogen Contents Obtained by Prior High-Temperature Solution Nitridingcitations
- 2016KCl-induced high temperature corrosion of selected commercial alloys. Part II: alumina and silica-formerscitations
- 2016Laboratory Investigations of Ni-Al Coatings Exposed to Conditions Simulating Biomass Firing
- 2016Laboratory Investigations of Ni-Al Coatings Exposed to Conditions Simulating Biomass Firing
- 2015KCl-induced high temperature corrosion of selected commercial alloys. Part I: chromia-formerscitations
- 2015New Stainless Steel Alloys for Low Temperature Surface Hardening?citations
- 2015New Stainless Steel Alloys for Low Temperature Surface Hardening?citations
- 2015Characterization of Transition Metal Carbide Layers Synthesized by Thermo-reactive Diffusion Processes
- 2015Characterization of Transition Metal Carbide Layers Synthesized by Thermo-reactive Diffusion Processes
- 2015Microstructural investigations of pure nickel exposed to KCl induced high temperature corrosioncitations
- 2014Microstructure of Precipitation Hardenable Powder Metallurgical Ni Alloys Containing 35 to 45 pct Cr and 3.5 to 6 pct Nbcitations
- 2013Investigation on Long-term Creep Rupture Properties and Microstructure Stability of Fe-Ni based Alloy Ni-23Cr-7W at 700°Ccitations
- 2013Growth of Vanadium Carbide by Halide-Activated Pack Diffusion
- 2013Growth of Vanadium Carbide by Halide-Activated Pack Diffusion
- 2012Design and characterization of novel precipitation hardenable high Cr Ni-based superalloys
- 2011In-situ hot corrosion testing of candidate materials for exhaust valve spindles
- 2009Modelling Cr depletion under a growing Cr2O3 layer on austenitic stainless steel: the influence of grain boundary diffusioncitations
- 2008Thermodynamic and kinetic modelling: creep resistant materialscitations
- 2008Nitrogen diffusion and nitrogen depth profiles in expanded austenite: experimental assessment, numerical simulation and role of stresscitations
- 2008Nitrogen diffusion and nitrogen depth profiles in expanded austenite: experimental assessment, numerical simulation and role of stresscitations
- 2007Grey-scale conversion X-ray mapping by EDS of multielement and multiphase layered microstructurescitations
- 2006Simulation of nitrogen concentration depth profiles in low temperature nitrided stainless steel
- 2006Simulation of nitrogen concentration depth profiles in low temperature nitrided stainless steel
- 2006Performance of nickel base superalloy components in gas turbines
- 2006Estimation of metal temperature of MCrAlY coated IN738 components based on interdiffusion behaviour
- 2002Fractography analysis of tool samples used for cold forging
Places of action
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article
KCl-induced high temperature corrosion of selected commercial alloys. Part II: alumina and silica-formers
Abstract
Laboratory testing on selected alumina and silica-forming alloys was performed to evaluate their performance against high temperature corrosion induced by potassium chloride (KCl). The alloys studied were FeCrAlY, Kanthal APM, Nimonic 80A, 214, 153MA and HR160. Exposure was conducted at 600 °C for 168 h in flowing N<sub>2</sub>(g)+5%O<sub>2</sub>(g)+15%H<sub>2</sub>O(g) (vol.%) with samples covered under KCl powder. A KCl-free exposure was also performed for comparison.Corrosion morphology and products were studied with scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffractometry (XRD). It was observed that alloying with aluminum did not lead to the formation of protective alumina for the studied alloys. The silicon containing stainless steel 153MA showed an analogous performance to low silicon austenitic stainless steels of similar chromium and nickel contents. For alloy HR160, a potassium-chromium-silicon-oxygen containing layer forms as the innermost corrosion product. The layer was uniformly distributed over the surface and appears to render some protection as this alloy exhibited the best performance among the investigated alloys. To reveal further aspects of the corrosion mechanism, Nimonic 80A was exposed in static laboratory air for the same duration and temperature with either KCl or K2CO3 deposits. Comparison of results obtained with these experiments showed that both potassium and chlorine can play a role in material degradation by KCl.