• Chemical stability and H2 flux degradation of cercer membranes based on lanthanum tungstate and lanthanum chromite 

      Polfus, Jonathan M.; Li, Zuoan; Xing, Wen; Sunding, Martin Fleissner; Walmsley, John; Fontaine, Marie-Laure; Henriksen, Partow Pakdel; Bredesen, Rune (Peer reviewed; Journal article, 2016)
      Ceramic–ceramic composite (cercer) membranes of (Mo-doped) lanthanum tungstate, La27(W,Mo)5O55.5−δ, and lanthanum chromite, La0.87Sr0.13CrO3−δ, have recently been shown to exhibit H2 permeabilities among state-of-the-art. ...
    • Controlling the Electrical Properties of Reactively Sputtered High Entropy Alloy CrFeNiCoCu Films 

      Mayandi, Jeyanthinath; Finstad, Terje Gunnar; Stange, Marit Synnøve Sæverud; Vasquez, Geraldo Cristian; Sunding, Martin Fleissner; Løvvik, Ole Martin; Diplas, Spyridon; Almeida Carvalho, Patricia (Peer reviewed; Journal article, 2021)
      Oxide-containing films were made by reactively sputtering a high-entropy alloy target of CrFeCoNiCu. We report on a wide range of changes to the electrical properties made by different heat treatments in oxidizing and ...
    • 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 ...
    • Doping strategies for increased oxygen permeability of CaTiO3 based membranes 

      Polfus, Jonathan M.; Xing, Wen; Sunding, Martin Fleissner; Hanetho, Sidsel Meli; Dahl, Paul Inge; Larring, Yngve; Fontaine, Marie-Laure; Bredesen, Rune (Peer reviewed; Journal article, 2015)
      Oxygen permeation measurements are performed on dense samples of CaTi0.85Fe0.15O3−δ, CaTi0.75Fe0.15Mg0.05O3−δ and CaTi0.75Fe0.15Mn0.10O3−δ in combination with density functional theory (DFT) calculations and X-ray photoelectron ...
    • Enhanced O2 flux of CaTi0.85Fe0.15O3 – d based membranes by Mn doping 

      Polfus, Jonathan M.; Xing, Wen; Riktor, Marit Dalseth; Sunding, Martin Fleissner; Dahl, Paul Inge; Hanetho, Sidsel Meli; Mokkelbost, Tommy; Larring, Yngve; Fontaine, Marie-Laure; Bredesen, Rune (Peer reviewed; Journal article, 2016)
      Dense symmetric membranes of CaTi0.85−xFe0.15MnxO3−δ (x = 0.1, 0.15, 0.25, 0.4) are investigated in order to determine the optimal Mn dopant content with respect to highest O2 flux. O2 permeation measurements are performed ...
    • Fabrication process parameters significantly affect the perovskite oxygen carriers materials (OCM) performance in chemical looping with oxygen uncoupling (CLOU) 

      Larring, Yngve; Pishahang, Mehdi; Tolchard, Julian R; Lind, Anna Maria; Sunding, Martin Fleissner; Stensrød, Ruth Elisabeth; Jacobs, Marijke; Snijkers, Frans; van der Kolk, Tjalling; Albertsen, Knuth (Peer reviewed; Journal article, 2019)
      The CLOU performance of the CaTixMn0.9−xMg0.1O3 (CMTM) perovskite-type system was investigated, comparing materials produced at laboratory scale with those made at industrial ton scale. The CLOU and conversion performances ...
    • Fabrication process parameters significantly affect the perovskite oxygen carriers materials (OCM) performance in chemical looping with oxygen uncoupling (CLOU) 

      Larring, Yngve; Pishahang, Mehdi; Tolchard, Julian R; Lind, Anna Maria; Sunding, Martin Fleissner; Stensrød, Ruth Elisabeth; Jacobs, Marijke; Snijkers, Frans; van der Kolk, Tjalling; Albertsen, Knuth (Peer reviewed; Journal article, 2019)
      The CLOU performance of the CaTixMn0.9-xMg0.1O3 (CMTM) perovskite-type system was investigated, comparing materials produced at laboratory scale with those made at industrial ton scale. The CLOU and conversion performances were ...
    • High cycle fatigue life estimation of AlSi10Mg processed by laser powder bed fusion 

      Hovig, Even Wilberg; S. Azar, Amin; Sunding, Martin Fleissner; Sørby, Knut; M'hamdi, Mohammed; Andreassen, Erik (Journal article, 2018)
      Fatigue life is known to be dependent on the surface properties of the material. Surface roughness provokes local stress concentration and cause crack initiation even at minute cyclic loads. In laser powder bed fusion, ...
    • High entropy alloy CrFeNiCoCu sputter deposited films: Structure, electrical properties, and oxidation 

      Mayandi, Jeyanthinath; Schrade, Matthias; Vajeeston, Ponniah; Stange, Marit Synnøve Sæverud; Lind, Anna Maria; Sunding, Martin Fleissner; Deuermeier, Jonas; Fortunato, Elvira; Løvvik, Ole Martin; Ulyashin, Alexander; Diplas, Spyridon; Almeida Carvalho, Patricia; Finstad, Terje Gunnar (Peer reviewed; Journal article, 2022)
      High entropy alloy (HEA) films of CrFeCoNiCu were deposited by sputtering. Their structure was characterized and their electric transport properties were studied by temperature-dependent Hall and Seebeck measurements. The ...
    • Manufacturing of perovskite oxygen carriers by spray granulation for chemical looping combustion 

      Thoréton, Vincent; Darell, Ove; Spjelkavik, Aud I.; Sunding, Martin Fleissner; Mokkelbost, Tommy; Pishahang, Mehdi; Wiik, Kjell; Larring, Yngve (Journal article; Peer reviewed, 2017)
    • Multi-purpose structured catalysts designed and manufactured by 3D printing 

      Lind, Anna; Vistad, Ørnulv Bjørnsson; Sunding, Martin Fleissner; Andreassen, Karin; Cavka, Jasmina Hafizovic; Grande, Carlos Adolfo (Peer reviewed; Journal article, 2020)
      This work presents an example of the design and manufacture capabilities that 3D printing can introduce in catalysis. A multi-purpose catalyst, with fast heat and mass transfer and low-pressure drop has been designed and ...
    • On the mechanism of Mn(II)-doping in Scandia stabilized zirconia electrolytes 

      Vøllestad, Einar; Øygarden, Vegar; Graff, Joachim Seland; Sunding, Martin Fleissner; Pietras, John D.; Polfus, Jonathan M.; Fontaine, Marie-Laure (Peer reviewed; Journal article, 2022)
      Cubic Scandia-stabilized zirconia (ScSZ) is an attractive electrolyte material for solid oxide cells due to its significant ionic conductivity, provided that the phase transition to its rhombohedral polymorph upon cooling ...
    • Reference data set of volcanic ash physicochemical and optical properties 

      Vogel, Andreas; Diplas, Spyridon; Durant, Adam; Azar, Amin Shahrestani; Sunding, Martin Fleissner; Rose, William I.; Sytchkova, Anna Krasilnikova; Bonadonna, Costanza; Krüger, Kirstin; Stohl, Andreas (Peer reviewed; Journal article, 2017)
      Uncertainty in the physicochemical and optical properties of volcanic ash particles creates errors in the detection and modeling of volcanic ash clouds and in quantification of their potential impacts. In this study, we ...
    • Roadmap for additive manufacturing of HAYNES® 282® superalloy by laser beam powder bed fusion (PBF-LB) technology 

      Otto, Robert; Brøtan, Vegard; Carvalho, Patricia A.; Reiersen, Magnus; Graff, Joachim Seland; Sunding, Martin Fleissner; Åsebø Berg, Olav; Diplas, Spyridon; Azar, Amin Shahrestani (Peer reviewed; Journal article, 2021)
      Although various alloy systems have been explored for additive manufacturing (AM) during the past decade, introducing a new alloy remains a challenging task. Most of the materials require iterative builds, for investigating ...
    • Stability investigation of micro-configured Pd-Ag membrane modules - Effect of operating temperature and pressure 

      Peters, Thijs; Stange, Marit Synnøve Sæverud; Sunding, Martin Fleissner; Bredesen, Rune (Peer reviewed; Journal article, 2015)
      The long-term stability over a period of up to 50 days has been reported for various designs of microstructured Pd77Ag23 membrane modules for H2 production and purification. Even though microchannels provide sufficient ...
    • Surface Reconstruction, Hydration, and Adhesion of Epoxy to the (0001) Surface of α-Berlinite: Insights from Density Functional Theory Calculations 

      Sagvolden, Espen; Sunding, Martin Fleissner; Swang, Ole (Peer reviewed; Journal article, 2020)
      Phosphoric acid anodization (PAA) is a candidate for replacement of toxic chromates during the surface treatment of aluminum prior to gluing in the aerospace industry. During PAA, a layer of AlPO4 forms on top of the alumina ...
    • Temperature-Dependent Adhesion in van der Waals Heterostructures 

      Polfus, Jonathan M.; Benthem, Marta; Ali, Ayaz; Barragan-Yani, Daniel; Vullum, Per Erik; Sunding, Martin Fleissner; Taniguchi, Takashi; Watanabe, Kenji; Belle, Branson (Peer reviewed; Journal article, 2021)
      The interlayer coupling between 2D materials is immensely important for both the fundamental understanding of these systems, and for the development of transfer techniques for the fabrication of van der Waals (vdW) ...