Blar i Institutt for materialteknologi på tittel
Viser treff 1037-1056 av 2496
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Hole annihilation vs. induced convection: Breakdown of different contributions to the photocorrosion mechanism of oxide-covered iron
(Peer reviewed; Journal article, 2021)The mechanism behind corrosion rate increase of anodised iron under illumination has been studied by comparing photocurrents with corrosion currents from polarisation curves under controlled convection. Under illumination ... -
Hollow-structured Cu0.4Zn0.6Fe2O4 as a novel negative electrode material for high-performance lithium-ion batteries
(Peer reviewed; Journal article, 2021)Novel hollow-structured Cu0.4Zn0.6Fe2O4 porous negative electrode material is synthesized using a one-step spray pyrolysis method, which exhibits excellent rate capability, high cycling stability, and fast charge-discharge ... -
Horizontal-to-tilt irradiance conversion for high-latitude regions: a review and meta-analysis
(Peer reviewed; Journal article, 2023)This review focuses on the solar irradiance model chain for horizontal-to-tilted irradiance conversion at high latitudes. The main goals of the work are 1) to assess the extent to which the literature accounts for decomposition ... -
Hot corrosion of Gd2Zr2O7, Gd2Zr2O7/YbSZ, YSZ+Gd2Zr2O7/YbSZ, and YSZ thermal barrier coatings exposed to Na2SO4+V2O5.
(Peer reviewed; Journal article, 2020)Gd2Zr2O7 ceramic is considered as a potential candidate for thermal barrier coatings. Here we present hot corrosion behavior of single layer Gd2Zr2O7 (GZO), Gd2Zr2O7 + 50 wt% YbSZ (GZO/YbSZ), YSZ and double-layer ... -
Hot Pressing and Characterization of Powder Based Silicon Substrates for Photovoltaic Applications.
(Master thesis, 2012)High purity silicon material in solar cell fabrication constitutes 40% of the total cost for conventional solar cell production. One approach to reduce costs would be to use less of this expensive silicon by making thin ... -
Hot pressing and degradation of TiB inert cathodes
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:127, Doctoral thesis, 2009)Primary aluminium production is an energy intensive process, and the aluminiumindustry strives to lower the energy consumption. However, with the current technology a considerable reduction in the energy consumption is ... -
How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As-Cast A356 Alloy with Cu Addition
(Journal article; Peer reviewed, 2018)The present work investigates a narrow range of secondary dendrite arm spacing (SDAS), in an as-cast A356 alloy with and without copper (Cu) additions. Cu was added to the base A356 alloy melt to reach the target concentration ... -
How to probe structure, kinetics and dynamics at complex interfaces in situ and operando by optical spectroscopy
(Chapter, 2017)Techniques using light in a large spectral range are well suited to study interfaces. Photon-based techniques have a special strength when it comes to application in situ and operando. This article introduces some of the ... -
Hvordan Ilmenitt Reduksjon med Hydrogengass Endres ved Introduksjon av Vanndamp
(Bachelor thesis, 2020)I dette prosjektet ble det gjennomført to forsøk. Begge forsøkene ble gjort for å undersøke reduksjonen av ilmenitt ved 900°C. Startproduktet var for-oksidert sandilmenitt fra Mosambik. Test 1 brukte 100% hydrogengass i ... -
Hvordan salting påvirker snøforholdene i skiløyper og nærliggende natur
(Bachelor thesis, 2019)I løpet av dette prosjektet har det blitt diskutert ulike metoder for salting av snø i håp om å finne en optimal løsning for salting av snø i skiløyper. En forklaring på hvordan snø dannes, i tillegg til utvalgte fysiske ... -
Hybrid Aminopropyl Silane-based Coatings on Steel
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:276, Doctoral thesis, 2012)Thin coatings applied to metals is a material-saving process to improve the surface properties such as abrasion and corrosion resistance of the substrate. Pure inorganic coatings are generally too thin to offer long-term ... -
Hybrid epoxy nanocomposites for high voltage application
(Master thesis, 2022)Hybrid epoksy nanokompositter med uorganiske TiO2 eller Al2O3 nanopartikler som fyllmateriale har vist seg å ha utmerkede dielektriske egensk-\\aper og kan bli brukt som isolasjon i høyspenningsapplikasjoner. Epoksy ... -
Hybrid Nanocomposites for High Voltage Insulation
(Master thesis, 2019)Bruken av nanopartikler som fyllmateriale i organiske polymerer har vist seg å forbedre ønskede egenskaper i polymerer for høyspenningsinsolasjon. Det eksisterer mange ulike metoder for forberedelse av hybride nanokompositter ... -
Hydraulic Characterization of Ceramic Foam Filters Used in Aluminum Filtration
(Peer reviewed; Journal article, 2023)Ceramic Foam Filters (CFF) are frequently used during the filtration of aluminum (Al) melts to produce high-quality products. In the present study, the physical and hydraulic characteristics of alumina (Al2O3)-based CFF ... -
Hydrides of Laves type Ti–Zr alloys with enhanced H storage capacity as advanced metal hydride battery anodes
(Peer reviewed; Journal article, 2020)The present work was focused on the studies of the effect of variation of stoichiometric composition of Ti–Zr based AB2±x Laves phase alloys by changing the ratio between A (Ti + Zr) and B (Mn + V + Fe + Ni) components ... -
Hydrogen embrittlement and corrosion evaluation of Alloy 725 alloyed with B and Cu
(Doctoral theses at NTNU;2023:40, Doctoral thesis, 2023)The need to achieve materials with higher strength and better corrosion resistance results in producing new alloys. Nickel base alloys are among the materials which have been subjected to several studies related to producing ... -
Hydrogen induced stress cracking of alloy 718: Effects of chemical composition and microstructure
(Master thesis, 2014)This master thesis have examined the effect of variations in composition and microstructure on the HISC susceptibility of Inconel-718. 6 different Inconel-718 variants with different compositions and heat treatments were ... -
Hydrogen Induced Stress Cracking of Inconel 625 - Effect of Production Method, Heat Treatment and Cold Working
(Master thesis, 2016)The following work has examined the effect of heat treatment, production method and cold working (CW) on the hydrogen induced stress cracking (HISC) susceptibility of Inconel 625 (UNS N06625). This was done by hydrogen ... -
Hydrogen Induced Stress Cracking of Spheroidal Graphite Cast Iron
(Master thesis, 2020)Abstract will be available on 2023-06-17 -
Hydrogen permeation in different microstructures of 66SiMnCrMo6-6-4 steel
(Master thesis, 2023)Diffusiviteten til hydrogen i stål er bestemmes av ulike mekanismer som forårsaker sprøhet. Avhengig av mikrostrukturen kan hydrogensprøhet være forårsaket av mange typer mekanismer, som derfor gjør det utfordrende å forutsi ...