Browsing NTNU Open by Title
Now showing items 49160-49179 of 105833
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In situ investigation of spinodal decomposition in hypermonotectic Al–Bi and Al–Bi–Zn alloys
(Journal article; Peer reviewed, 2008)Spinodal decomposition of hypermonotectic Al–6 wt.%Bi, Al–8 wt.%Bi and Al–6 wt.%Bi–8 wt.%Zn alloys has been investigated using synchrotron radiography. In the case of the 6 and 8 wt.%Bi binary alloys undercoolings of ... -
In Situ Measurements of the Chemical Stability of a Cast Aluminum Alloy Embedded in a Cement Paste with a High Amount of Supplementary Cementitious Material
(Peer reviewed; Journal article, 2021)In traditional reinforced concrete, the alkaline pore solution which passivates the steel rebars will get neutralized with time in an exposed environment. Therefore, to prevent corrosion initiation, the permeability of the ... -
In situ micromechanical testing in environmental scanning electron microscope: A new insight into hydrogen-assisted cracking
(Journal article; Peer reviewed, 2018)The susceptibility of Fe–26Al–0.5Cr (at.%) intermetallic alloy to hydrogen assisted cracking was evaluated by micromechanical fracture mechanics specimens. The notched micro-beams were loaded in situ in an environmental ... -
In situ monitoring of pit gas composition during baking of anodes for aluminum electrolysis
(Journal article; Peer reviewed, 2019)Carbon anodes, which are consumed in aluminum electrolysis, are fabricated in separate anode plants where coke and pitch are mixed and vibrocompacted to green anode blocks before being baked in anode baking furnaces. The ... -
In situ nanocomposites for high voltage insulation
(Doctoral theses at NTNU;2022:36, Doctoral thesis, 2021)Rapid technological developments and the expanding scope of human activity has significantly increased energy demands. This has resulted in increasing requirements for insulation systems with improved dielectric, mechanical, ... -
In Situ Nanomechanical Testing of Electrochemical Hydrogen Permeation Membranes - A critical approach to study hydrogen embrittlement
(Master thesis, 2017)The purpose of this thesis is to determine if the new novel approach of investigating the effects of hydrogen, using a custom made hydrogen permeation cell together with a nanoindenter can give insight into the fundamental ... -
In situ nucleation studies of ALD Copper thin films
(Master thesis, 2020)Ettersom moderne elektroniske enheter stadig blir mindre og mer komplekse, vil ultratynne kobberfilmer med skarpe grensesnitt bli uunnværlige i fremtiden. Oppløsning på atomnivå kan oppnåes ved atom lag deponering(ALD), ... -
In situ observation of the carbothermic reduction and foaming of slags in silicomanganese production
(Journal article; Peer reviewed, 2021)The carbothermic reduction of slag in silicomanganese production is accompanied by the release of carbon monoxide. This gas can accumulate as bubbles within the slag, leading to foaming and, potentially, disturbances to ... -
In situ recordings of large gelatinous spheres from NE Atlantic, and the first genetic confirmation of egg mass of Illex coindetii (Vérany, 1839) (Cephalopoda, Mollusca)
(Peer reviewed; Journal article, 2021)In total, 90 gelatinous spheres, averaging one meter in diameter, have been recorded from ~ 1985 to 2019 from the NE Atlantic Ocean, including the Mediterranean Sea, using citizen science. More than 50% had a dark streak ... -
In situ small-scale hydrogen embrittlement testing made easy: An electrolyte for preserving surface integrity at nano-scale during hydrogen charging
(Journal article; Peer reviewed, 2018)An electrolyte for electrochemical hydrogen charging of corrosion-susceptible alloys is developed, which preserves the surface integrity at nano-scale by minimizing the surface roughness alternation. To assure the formation ... -
In situ small-scale mechanical testing under extreme environments
(Journal article; Peer reviewed, 2019)The high precision offered by small-scale mechanical testing has allowed the relationships between mechanical behavior and specific microstructural features to be determined to an unprecedented degree. However, of most ... -
In situ strekkforsøk med EBSD karakterisering av HSLA-stål ved romtemperatur og -60 °C
(Master thesis, 2011)Denne oppgaven har tatt for seg et 420 MPa HSLA stål. Stålet ble sveisesimulertfor å oppnå mikrostruktur tilsvarende grovkornet og interkritisk grovkornetHAZ. Interkritisk grovkornet HAZ ble oppnådd ved en tosyklus ... -
In situ strekktesting og karakterisering av et 9%Ni-stål: ved hjelp av EBSD
(Master thesis, 2012)Denne oppgaven har tatt for seg karakterisering av mikrostruktur og in-situ strekk-testing for et 9%Ni-stål levert av JFE Steel. Dette ble gjennomført ved hjelp av EBSD og et spesialprodusert strekkbord for bruk inne i ... -
In situ synthesis of epoxy nanocomposites with hierarchical surface-modified SiO2 clusters
(Peer reviewed; Journal article, 2020)Polymer nanocomposites are often produced using in situ approaches where an inorganic filler (as the dispersed phase) is synthesized directly in an organic matrix. Such an approach generally leads to improved dispersion and ... -
In situ synthesis of hybrid inorganic-polymer nanocomposites
(Journal article; Peer reviewed, 2018)Hybrid inorganic–polymer nanocomposites can be employed in diverse applications due to the potential combination of desired properties from both the organic and inorganic components. The use of novel bottom–up in situ ... -
In situ synthesis of titania and titanium based organicinorganic nanomaterials
(Doctoral theses at NTNU;2017:230, Doctoral thesis, 2017)Inorganic and organic materials often exhibit opposite trends in properties (e.g. mechanical properties, thermal stability, hydrophobicity, optical properties) and the idea of combining these materials into new materials ... -
In Situ Tensile Testing During Continuous EBSD Mapping of Super Duplex Stainless Steel Containing Sigma Phase
(Master thesis, 2016)Super duplex stainless steels (SDSS) are materials which comprise an extraordinary combination of mechanical properties, corrosion resistance and relatively low cost. SDSS were developed on the basis for use in the North ... -
In situ X-ray absorption spectroscopic studies of unsupported and supported CoRe during ammonia synthesis/ammonia decomposition
(Doctoral theses at NTNU;2021:407, Doctoral thesis, 2021)In situ X-ray absorption spectroscopy (XAS) studies are crucial for studying the local environment, oxidation state and speciation of transition metals during thermal pre-treatments and during working conditions of catalysts. ...