Blar i Institutt for materialteknologi på tittel
Viser treff 524-543 av 2496
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Dielectric and piezoelectric properties of barium calcium zirconate titanate ceramics
(Master thesis, 2019)Det ferroelektriske systemet barium calcium zirconate titanate er av høy interesse for bruk i industrielle applikasjoner på grunn av eksepsjonelt høye piezoelektriske koeffisienter. Videre så utgjør det et interessant ... -
Diffusion couple study of the interaction between Cr2O3 and MnCo2O4 doped with Fe and Cu
(Peer reviewed; Journal article, 2019)Manganese cobalt spinel oxides are promising coating materials for the protection of ferritic stainless steel interconnects in solid oxide fuel cell (SOFC) stacks. The interaction between such coatings and the steel is ... -
Diffusion of alkali metals in the first stage graphite intercalation compounds by vdW-DFT calculations
(Journal article; Peer reviewed, 2015)Diffusion of alkali metal cations in the first stage graphite intercalation compounds (GIC) LiC6, NaC6, NaC8 and KC8 has been investigated with density functional theory (DFT) calculations using the optPBE-vdW van der Waals ... -
Diffusion studies of Fe in amorphous quartz for the PV industry
(Master thesis, 2020)Kvartsdiglene som brukes til å støpe multikrystallinsk silisium (mc-Si) til solcelleindustrien er en dominerende forurensningskilde i silisiumproduksjonen. For høye konsentrasjoner av metalliske urenheter, som jern, i ... -
Digitalisering av energi sektoren
(Bachelor thesis, 2019)Repsol er i ferd med å utvikle Nidaros feltet og vil lære av erfaringer gjort ved Kalvskinnet feltet. Erfaringene fra Kalvskinnet er at feltet hadde store produksjonstap knyttet til uplanlagte hendelser, og da spesielt ... -
Digitalisering og automatisering av inspeksjonsdata for offshore prosessrørledninger
(Bachelor thesis, 2021)Sammendrag Denne bacheloroppgaven er skrevet i samråd med NTNU og MainTech AS. Rapporten tar for seg problemstillingen; «hvordan kan digitalisering av beregninger og resultater effektivisere oversikten over rørkomponentenes ... -
Dimensionality-induced change in topological order in multiferroic oxide superlattices
(Peer reviewed; Journal article, 2021)We construct ferroelectric ðLuFeO3Þm=ðLuFe2O4Þ superlattices with varying index m to study the effect of confinement on topological defects. We observe a thickness-dependent transition from neutral to charged domain walls ... -
Dipentamethylene thiuram tetrasulfide-based cathodes for rechargeable magnesium batteries
(Peer reviewed; Journal article, 2020)Rechargeable Mg batteries (RMBs) represent a possible route for low-cost energy storage applications, but they are lacking a satisfactory cathode material. Conventional sulfur (S8) cathodes have shown promise, yet they ... -
Direct electrochemical reduction of hematite pellets in alkaline solutions
(Journal article, 2014)Our previous studies on the electrowinning of iron from hematite particles suspended in sodium hydroxide solutions demonstrated that iron was produced through a direct solid phase electrochemical reduction of the oxide ... -
Direct Method for Producing Scandium Metal and Scandium-Aluminium Intermetallic Compounds from the Oxides
(Journal article; Peer reviewed, 2018)The electrochemical de-oxidation process, also called FFC-Cambridge process, has been proposed previously to produce reactive metals and their alloys through reduction of their metal oxides. The process works by introducing ... -
Direct monitoring of minority carrier density during light induced degradation in Czochralski silicon by photoluminescence imaging
(Journal article; Peer reviewed, 2013)In this paper, we present a new method for studying the light induced degradation process, in which the minority carrier density is monitored directly during light soaking by photoluminescence imaging. We show experimentally ... -
Direct observation of ferroelectric field effect and vacancy-controlled screening at the BiFeO3/LaxSr1−xMnO3 interface
(Journal article, 2014)The development of interface-based magnetoelectric devices necessitates an understanding of polarization-mediated electronic phenomena and atomistic polarization screening mechanisms. In this work, the LSMO/BFO interface ... -
Direct Production of Aluminum Manganese and Silicon Alloys in Aluminum Reduction Cells: A Laboratory Test
(Journal article, 2022)Aluminum smelters produce pure aluminum in reduction cells by the Hall-Héroult process but supply a variety of alloys to their customers. The alloys are produced in the cast house, as master alloys containing the desired ... -
Direct Production of Aluminum Titanium Alloys in Aluminum Reduction Cells: A Laboratory Test.
(Journal article, 2022)Aluminum smelters produce pure aluminum in reduction cells by the Hall-Héroult process, however, aluminum is usually supplied as a variety of alloys to their customers. The alloys are produced in the casthouse, as desired ... -
Directed Lithiation of Protected 4-Chloropyrrolopyrimidine: Addition to Aldehydes and Ketones Aided by Bis(2-dimethylaminoethyl)ether
(Peer reviewed; Journal article, 2023)Pyrrolopyrimidines are important scaffolds for the preparation of bioactive molecules. Therefore, developing efficient and flexible ways for selective functionalization of the pyrrolopyrimidine skeleton is of interest. We ... -
Directionality and column arrangement principles of precipitates in Al-Mg-Si-(Cu) and Al-Mg-Cu linked to line defect in Al
(Journal article, 2016)In the structures of all metastable precipitates in Al-Mg-Cu and Al-Mg-Si alloys, we find that column surrounding of an element column in the needle/lath direction order according to simple principles. Advanced transmission ... -
Discussion of bi-film index and LiMCA data in industrial aluminum remelting trials
(Journal article; Peer reviewed, 2018)The trend in the aluminum high end market is to set unrealistic quality requirements e.g. inclusion free metal. The importance of quality and the ability to measure is growing. LiMCA is a unique, well-established tool for ... -
Disintegration of Six Different Quartz Types during Heating to 1600 °C
(Journal article; Peer reviewed, 2023) -
Dislocation behavior in a polycrystalline Mg-Y alloy using multi-scale characterization and VPSC simulation
(Peer reviewed; Journal article, 2022)In this study, the dislocation behavior of a polycrystalline Mg-5Y alloy during tensile deformation was quantitatively studied by an in-situ tensile test, visco-plastic self-consistent (VPSC) modeling, and transmission ...