Ulf Jansson
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View article: Chemical exfoliation of layered Al5C3N for the synthesis of AlN nanosheets
Chemical exfoliation of layered Al5C3N for the synthesis of AlN nanosheets Open
Two-dimensional (2D) aluminum nitride (AlN) represents a promising material with unique properties predicted by density functional theory (DFT), characterized by a honeycomb lattice where Al and N atoms exhibit threefold in-plane coordinat…
View article: The Crystal Structure of Al<sub>4</sub>SiC<sub>4</sub> Revisited
The Crystal Structure of Al<sub>4</sub>SiC<sub>4</sub> Revisited Open
Al4SiC4 is a ternary wide-band-gap semiconductor with a high strength-to-weight ratio and excellent oxidation resistance. It consists of slabs of Al4C3 separated by SiC layers with the space group of P63mc. The space group allows Si to occ…
View article: Extending the Passive Region of CrFeNi‐Based High Entropy Alloys
Extending the Passive Region of CrFeNi‐Based High Entropy Alloys Open
This study provides principles for designing new corrosion resistant high entropy alloys. The theoretical framework is a percolation model developed by Newman and Sieradzki that predicts the ability of an alloy to passivate, i.e., to form …
View article: Additive Manufacturing of Cu Using Graphene-Oxide-Treated Powder
Additive Manufacturing of Cu Using Graphene-Oxide-Treated Powder Open
Additive manufacturing of Cu is interesting for many applications where high thermal and electric conductivity are required. A problem with printing of Cu with a laser-based process is the high reflectance of the powder for near-infrared w…
View article: Privacy challenges in geodata and open data
Privacy challenges in geodata and open data Open
This article presents a discussion of the emerging ethical issue of geodata privacy in geographical research. The paper highlights the importance of considering challenges to privacy when working with geographically explicit data and explo…
View article: Convective Flow Redistribution of Oxygen by Laser Melting of a Zr-Based Amorphous Alloy
Convective Flow Redistribution of Oxygen by Laser Melting of a Zr-Based Amorphous Alloy Open
Oxygen impurities play a crucial role in the glass-forming ability and crystallisation behaviour of metallic glasses. In the present work, single laser tracks were produced on Zr59.3-xCu28.8 Al10.4Nb1.5Ox substrates (x = 0.3, 1.3) to study…
View article: Reactive metal additive manufacturing: Surface near ZrN–metallic glass composite formation and mechanical properties
Reactive metal additive manufacturing: Surface near ZrN–metallic glass composite formation and mechanical properties Open
ZrN formation in a Zr-based bulk metallic glass is observed after processing using reactive laser powder bed fusion. Two processing routes employing nitrogen as a reactive process gas are explored: (1) Standard inert processing in argon fo…
View article: Relationship between Microstructure, Mechanical Properties and Creep Behavior of a Cr-Rich Ferritic Stainless Steel Produced by Laser Powder Bed Fusion
Relationship between Microstructure, Mechanical Properties and Creep Behavior of a Cr-Rich Ferritic Stainless Steel Produced by Laser Powder Bed Fusion Open
Additive manufacturing (AM) techniques such as laser powder bed fusion (L-PBF) are rapidly growing due to the inherent design freedom and possibilities to produce components not available with other techniques. This could be utilized in, e…
View article: Precipitation Kinetics During Post-heat Treatment of an Additively Manufactured Ferritic Stainless Steel
Precipitation Kinetics During Post-heat Treatment of an Additively Manufactured Ferritic Stainless Steel Open
The microstructure response of laser-powder bed fusion (L-PBF)-processed ferritic stainless steel (AISI 441) during post-heat treatments is studied in detail. Focus is on the precipitation kinetics of the Nb-rich phases: Laves (Fe 2 Nb) an…
View article: Corrosion studies on multicomponent CoCrFeMnNi(C) thin films in acidic environments
Corrosion studies on multicomponent CoCrFeMnNi(C) thin films in acidic environments Open
The corrosion resistances of near equimolar CoCrFeMnNi magnetron-sputtered thin films with different carbon concentrations were examined in 0.05 M HCl and 0.05 M H2SO4. Polarization curves were recorded with different scan rates with and w…
View article: Structure and phase transformations in gas atomized AlCoCrFeNi high entropy alloy powders
Structure and phase transformations in gas atomized AlCoCrFeNi high entropy alloy powders Open
In this study, the crystal structure and phase stability of gas atomized equiatomic AlCoCrFeNi powder was investigated. This alloy is usually described as a high entropy alloy forming a solid solution phase stabilized by a high mixing entr…