Blar i NTNU Open på forfatter "Safarian, Jafar"

Viser treff 81-89 av 89

    • Toward the recovery of solar silicon from end-of-life PVs by vacuum refining 

      Hoseinpur Kermani, Arman; Tang, Kai; Ulyashin, Alexander; Palitzch, Wolfram; Safarian, Jafar (Peer reviewed; Journal article, 2023)
      Considering the boom of Si solar cell installation, it is necessary to establish a process for recycling of Si from End-of-life photovoltaics (PVs). Silicon in the PVs is synthetically doped and coated by various elements ...

    • The Use of Fe-26Si-9B Alloy as Phase Change Material in Si<inf>3</inf>N<inf>4</inf> Container 

      Jiao, Jian Meng; Safarian, Jafar; Tangstad, Merete (Peer reviewed; Journal article, 2022)
      Fe-26Si-9B alloy was selected as a potential phase change material (PCM) to store energy at temperatures up to 1300 °C. A suitable refractory material is crucial to building a PCM container for Fe-26Si-9B alloy in thermal ...

    • The Utilization of Bauxite Residue with a Calcite-Rich Bauxite Ore in the Pedersen Process for Iron and Alumina Extraction 

      Lazou, Adamantia; Eijk, Casper van der; Tang, Kai; Balomenos, Efthymios; Kolbeinsen, Leiv; Safarian, Jafar (Peer reviewed; Journal article, 2021)
      Metallurgical grade alumina is produced worldwide through the well-known Bayer process, which unavoidably generates bauxite residue (BR, also known as red mud) in almost equal amounts to alumina. This study aims the ...

    • Vacuum and Gas Refining of Silicon for Solar Cell Applications 

      Kermani, Arman Hoseinpur (Doctoral theses at NTNU;2021:244, Doctoral thesis, 2021)
      In this research, the vacuum and gas refining for P and B removal from Si to reach solar grade silicon (SoG – Si) are studied. The vacuum refining process is modeled by applying the Hertz – Knudsen – Langmuir evaporation ...

    • Vacuum evaporation of pure metals 

      Safarian, Jafar; Engh, Thorvald Abel (Journal article; Peer reviewed, 2013)
      Theories on the evaporation of pure substances are reviewed and applied to study vacuum evaporation of pure metals. It is shown that there is good agreement between different theories for weak evaporation, whereas there ...

    • Vacuum refining of silicon at ultra-high temperatures 

      Hoseinpur Kermani, Arman; Safarian, Jafar (Peer reviewed; Journal article, 2020)
      In the production of solar grade silicon (SoG-Si), Phosphorus (P) removal from Si is a challenge as it cannot be eliminated effectively by the final key directional solidification step in the value chain of the silicon ...

    • Valorization of aluminum dross with copper via high temperature melting to produce al-cu alloys 

      Kudyba, Artur; Akhtar, Shahid; Johansen, Inge; Safarian, Jafar (Peer reviewed; Journal article, 2021)
      The valorization of aluminum dross for Al recovery was performed via its mixing with metallic copper to produce Al-Cu alloys. This approach was with the intention of establishing a new smelting process to treat the dross ...

    • WETTABILITY OF MOLTEN Fe-Si-B ALLOY ON GRAPHITE, Al2O3, AND h-BN SUBSTRATES 

      Jiao, Jianmeng; Grorud, Bettina; Safarian, Jafar; Tangstad, Merete (Chapter, 2019)
      Fe-26.38Si-9.35B alloy (numbers in mass %) is of interest as a phase change material (PCM) because it exhibits high thermal conductivity, moderate melting point, high latent heat, and low cost. This study offers valuable ...

    • Wetting Behavior and Reactivity of Molten Silicon with h-BN Substrate at Ultrahigh Temperatures up to 1750 °C 

      Polkowski, Wojciech; Sobczak, Natalia; Nowak, Rafal; Kudyba, Artur; Bruzda, Grzegorz; Polkowska, Adelajda; Homa, Marta; Turalska, Patrycja; Tangstad, Merete; Safarian, Jafar; Moosavi-Khoonsari, Elmira; Datas, Alejandro (Journal article; Peer reviewed, 2017)
      For a successful implementation of newly proposed silicon-based latent heat thermal energy storage systems, proper ceramic materials that could withstand a contact heating with molten silicon at temperatures much higher ...