• Chemical stability of Ca3Co4−xO9+δ/CaMnO3−δ p–n junction for oxide-based thermoelectric generators 

      Gunnæs, Anette Eleonora; Tofan, Raluca; Berland, Kristian; Gorantla, Sandeep Madhukar; Storaas, Thomas Aarflot; Desissa, Temesgen Debelo; Schrade, Matthias; Persson, Clas; Einarsrud, Mari-Ann; Wiik, Kjell; Norby, Truls Eivind; Kanas, Nikola (Peer reviewed; Journal article, 2020)
      An all-oxide thermoelectric generator for high-temperature operation depends on a low electrical resistance of the direct p–n junction. Ca3Co4−xO9+δ and CaMnO3−δ exhibit p-type and n-type electronic conductivity, respectively, ...
    • Correlation between surface chemistry and morphology of PtCu and Pt nanoparticles during oxidation-reduction cycle 

      Kalyva, Maria Evangelou; Sunding, Martin Fleissner; Gunnæs, Anette Eleonora; Diplas, Spyridon; Redekop, Evgeniy (Peer reviewed; Journal article, 2020)
      Process conditions during catalytic reactions induce significant changes in surface chemistry and structure of bi- (mono) metallic nanoparticles leading to their deactivation, and this can ultimately affect the reactions ...
    • Heat source management in wire-arc additive manufacturing process for Al-Mg and Al-Si alloys 

      Oyama, Kohei; Diplas, Spyridon; M'hamdi, Mohammed; Gunnæs, Anette Eleonora; S. Azar, Amin (Journal article; Peer reviewed, 2019)
      Modelling of wire-arc additive manufacturing process is an effective way for adapting the optimum parameters as well as understanding and managing the sequences of layer-by-layer deposition. Some of these parameters such ...
    • Interface phenomena in magnetron sputtered Cu2O/ZnO heterostructures 

      Jensen, Ingvild Julie Thue; Gorantla, Sandeep Madhukar; Løvvik, Ole Martin; Gan, Jiantuo; Nguyen, Phuong Dan; Monakhov, Edouard; Svensson, Bengt Gunnar; Gunnæs, Anette Eleonora; Diplas, Spyridon (Peer reviewed; Journal article, 2017)
      The interface between ZnO and Cu2O has been predicted to be a good candidate for use in thin film solar cells. However, the high predicted conversion efficiency has yet to be fully realized experimentally. To explore the ...
    • Nanoscale Magnetic Properties of Additively Manufactured FeCoNiAlxMnx High-Entropy Alloys 

      Poulia, Anthoula; S. Azar, Amin; Svec, Peter; Bazioti, Kalliopi; Belle, Branson; Gunnæs, Anette Eleonora; Diplas, Spyros; Mikheenko, Pavlo (Chapter; Peer reviewed, 2020)
      Magnetic properties of High-Entropy Alloys based on the Fe-Co-Ni-Al-Mn system are reported. High-Entropy Alloys are cutting-edge technological materials containing five or more elements in relatively high concentrations ...
    • Probing the structural evolution and its impact on magnetic properties of FeCoNi(AlMn)x high-entropy alloy at the nanoscale 

      Bazioti, Kalliopi; Løvvik, Ole Martin; Poulia, Anthoula; Almeida Carvalho, Patricia; S. Azar, Amin; Mikheenko, Pavlo; Diplas, Spyridon; Gunnæs, Anette Eleonora (Peer reviewed; Journal article, 2022)
      We report the first nanoscale investigation of FeCoNi(AlMn)x high-entropy alloys (HEAs) processed by laser metal deposition. The structural evolution of the alloy upon chemical composition variation (0.2 ≤ x ≤ 1.5) was ...
    • Process–Structure–Property Relationship in FeCoNiAlxMnx Complex Concentrated Alloys Processed by Additive Manufacturing 

      Poulia, Anthoula; S. Azar, Amin; Schrade, M.; Graff, J.S.; Bazioti, Kalliopi; Gunnæs, Anette Eleonora; Carvalho, P.A.; Diplas, Spyridon (Peer reviewed; Journal article, 2021)
      Fourteen alloys of the FeCoNiAlxMnx system were processed by laser metal deposition (LMD). The feedstock was a weighted and proportional blend of the containing elemental powders, targeting the nominal alloy compositions. ...
    • Synthesis, microstructure, and thermoelectric properties of Sb-Based high entropy alloys 

      Rahman, Jamil Ur; Almeida Carvalho, Patricia; Soltani, Nayereh; Schrade, Matthias; Gunnæs, Anette Eleonora; Finstad, Terje Gunnar (Peer reviewed; Journal article, 2022)
      In this paper, we explore the synthesis of new antimonide compounds based upon concepts of high entropy alloys (HEA). HEAs are usually multi-element (⪆5) alloys with near the equiatomic composition. They have been given ...