693.932 PEOPLE
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| Naji, M. |
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| Petrov, R. H. | Madrid |
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Graeve, Iris De
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (57/57 displayed)
- 2024Unveiling the impact of laser power variations on microstructure, corrosion, and stress-assisted surface crack initiation in laser powder bed fusion-processed Ni-Fe-Cr alloy 718citations
- 2024Early stages of liquid-metal corrosion on pre-oxidized surfaces of austenitic stainless steel 316L exposed to static Pb-Bi eutectic at 400 °C
- 2024Mechanism of alteration in passivity of additively manufactured Ni-Fe-Cr Alloy 718 caused by minor carbon variationcitations
- 2024Effect of heat treatment on the microstructure and pitting corrosion behavior of 316L stainless steel fabricated by different additive manufacturing methods (L-PBF versus L-DED): Comparative investigation exploring the role of microstructural features on passivitycitations
- 2023Heat treatment for metal additive manufacturingcitations
- 2022Microstructural Features, Defects, and Corrosion Behaviour of 316L Stainless Steel Clads Deposited on Wrought Material by Powder- and Laser-Based Direct Energy Deposition with Relevance to Repair Applicationscitations
- 2022Effect of Thermal Treatment on Corrosion Behavior of AISI 316L Stainless Steel Manufactured by Laser Powder Bed Fusioncitations
- 2022Growth kinetics and passive behavior of the native oxide film on additively manufactured AlSi10Mg versus the conventional cast alloycitations
- 2022Revealing the stress corrosion cracking initiation mechanism of alloy 718 prepared by laser powder bed fusion assessed by microcapillary methodcitations
- 2022Influence of Thermal Oxide Layers on the Hydrogen Transport through the Surface of SAE 1010 Steelcitations
- 2021Effect of Homogenization Temperature and Soaking Time on the Microstructure and Corrosion Properties of a Twin Roll Casted AA3003citations
- 2021Impact of hydrogen and crosshead displacement rate on the martensitic transformations and mechanical properties of 304L stainless steelcitations
- 2021On the Zr electrochemical conversion of additively manufactured AlSi10Mg: The role of the microstructurecitations
- 2021Effect of Sr Addition to a Modified AA3003 on Microstructural and Corrosion Propertiescitations
- 2020Hydrogen-assisted cracking in 2205 duplex stainless steelcitations
- 2020Microstructure and corrosion behavior of 316L stainless steel prepared using different additive manufacturing methodscitations
- 2020Humidity Robustness of Plasma-Coated PCBscitations
- 2020Critical assessment of the evaluation of thermal desorption spectroscopy data for duplex stainless steelscitations
- 2020EIS comparative study and critical Equivalent Electrical Circuit (EEC) analysis of the native oxide layer of additive manufactured and wrought 316L stainless steelcitations
- 2020Influence of Alloying Element and Conversion Coating Variations on the Corrosion Properties of Recycled Al-Mg-Si Alloys
- 2020Effect of simulated brazing on the microstructure and corrosion behavior of twin roll cast AA3003citations
- 2020Corrosion and Corrosion Protection of Additively Manufactured Aluminium Alloys-A Critical Reviewcitations
- 2019Electrochemical hydrogen charging of duplex stainless steelcitations
- 2019Effect of brazing on the microstructure and corrosion behaviour of a twin roll cast Al-Mn-Fe-Si alloy system
- 2019First observation by EBSD of martensitic transformations due to hydrogen presence during straining of duplex stainless steelcitations
- 2019Molybdate-phosphate conversion coatings to protect steel in a simulated concrete pore solutioncitations
- 2019Effect of Zn on the grain boundary precipitates and resulting alkaline etching of recycled Al-Mg-Si-Cu alloyscitations
- 2019On the Impact of Si Content and Porosity Artifacts on the Anodizing Behavior of Additive Manufactured Al-Si Alloyscitations
- 2018Deformation induced degradation of hot-dip aluminized steelcitations
- 2018Comparison of Electrochemical and Thermal Evaluation of Hydrogen Uptake in Steel Alloys Having Different Microstructurescitations
- 2018Role of Si in the Anodizing Behavior of Al-Si Alloys: Additive Manufactured and Cast Al-Si10-Mgcitations
- 2018Effect of deformation twinning on dissolution corrosion of 316L stainless steels in contact with static liquid lead-bismuth eutectic (LBE) at 500 °Ccitations
- 2018The study on the corrosion mechanism of protective ternary Zn-Fe-Mo alloy coatings deposited on carbon steel in 0.5 mol dm(-3) NaCl solutioncitations
- 2018Influence of Si Content on the Microstructure and Corrosion Behavior of Additive Manufactured Al-Si Alloyscitations
- 2017Influence of grain size on the electrochemical behavior of pure coppercitations
- 2017Use of local electrochemical methods (SECM, EC-STM) and AFM to differentiate microstructural effects (EBSD) on very pure coppercitations
- 2017Fatigue Performance of Ti-6Al-4V Additively Manufactured Specimens with Integrated Capillaries of an Embedded Structural Health Monitoring Systemcitations
- 2017Development of an Electrochemical Procedure for Monitoring Hydrogen Sorption/Desorption in Steelcitations
- 2017Galvanostatic Anodizing of Additive Manufactured Al-Si10-Mg Alloycitations
- 2017Influence of dipping conditions on intermetallic layer formation and electrochemical behaviour of aluminized steel
- 2017Influence of oxygen concentration on the initiation of dissolution corrosion on 316L austenitic stainless steel at 450°
- 2016Smart corrosion protection by multi-action self-healing polymeric coatingscitations
- 2016A Multiple-Action Self-Healing Coatingcitations
- 2016Encapsulation and incorporation of sodium molybdate in polyurethane coatings and study of its corrosion inhibition on mild steelcitations
- 2015Non-destructive 3-dimensional mapping of microcapsules in polymeric coatings by confocal Raman spectroscopycitations
- 2014In situ scanning tunneling microscopy study of the intergranular corrosion of copper
- 2014Advances in the development of corrosion and creep resistant nano-yttria dispersed ferritic/martensitic alloys using the rapid solidification processing technique
- 2014Experimental study on the contact angle formation of solidified iron-chromium droplets onto yttria ceramic substrates for the yttria/ferrous alloy system with variable chromium content
- 2014Comprehensive study on the sintering behavior of yttria nano-powder in contact with electrolytic iron using the rapid solidification processing technique
- 2013An infrared spectroscopic study of sodium silicate adsorption on porous anodic alumina
- 2013Mechanism of corrosion protection of hot-dip aluminium-silicon coatings on steel studied by electrochemical depth profilingcitations
- 2013Effect of surface composition and microstructure of aluminised steel on the formation of a titanium-based conversion layer
- 2013Structure and Formation Mechanism of Rolled-in Oxide Areas on Aluminum Lithographic Printing Sheets
- 2013Influence of the type of alkali metal cation on the interaction of soluble silicates with porous anodic alumina
- 2011Self-healing property characterization of reversible thermoset coatings
- 2011A combined mechanical, microscopic and local electrochemical evaluation of self-healing properties of shape-memory polyurethane coatings (available online)
- 2010Silicate-based post-anodic treatment for lithographic application
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article
Effect of Zn on the grain boundary precipitates and resulting alkaline etching of recycled Al-Mg-Si-Cu alloys
Abstract
The Zinc level in many 6000 Al alloys (Al-Mg-Si-type) was set to a maximum of 0.03 wt% as common industrial practice. Concentrations above 0.03 wt% can modify the alkaline etching mechanism causing the surface to go from a desired smooth look associated with a grain boundary attack (GBA), into an undesired speckled appearance due to preferential grain etching (PGE), visible after anodizing. This significantly limits the ambition of reducing the carbon footprint of Aluminum by increasing the amount of recycled material in the production process. Because Cu has been reported to counteract this negative effect of Zn, the present study is dedicated to contribute to the understanding of this interaction and is focused on Zn and Cu in peak aged AlMgSi alloys. The chemical composition of the various precipitates formed in two Al6063 alloys was studied by means of TEM and EDX, whereby Zn was found in the Q phase (AlMgSiCu) grain boundary precipitates. Two alloys, with different content of Cu and Zn were studied. The Zn/Cu ratio in the bulk was similar for both alloys, but the level of Zn in the Cu containing Q particles in the grain boundaries was different. The increased Zn concentration in Q phase precipitates is believed to decrease the potential of the precipitates with respect to the surrounding matrix. Thus, the Cu/Zn ratio in these alloys is extremely important as it defines the potential differences that in turn cause either GBA or PGE.