Browsing Institutt for materialteknologi by Title
Now showing items 2342-2361 of 2527
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The real area of nanoporous catalytic surfaces of gold and palladium in aqueous solutions
(Journal article; Peer reviewed, 2018)The determination of the real, or active, area of a catalytic surface is a key requirement to understand or quantify parameters related to its electrochemical behavior. There are several experimental methods available, but ... -
The Reassigned Pseudo Wigner-Ville Transform in Electrochemical Noise Analysis
(Journal article; Peer reviewed, 2019)Several different time–frequency transforms from signal processing were used to analyze electrochemical noise data to determine frequency components contained within the noise record and their time evolution. Bilinear ... -
The relation between microstructure and thermoelectric properties in Ta-substituted A-site deficient CaMnO3
(Master thesis, 2017)Calcium manganite, CaMnO3, is an n-type semiconductor with promising thermoelectric (TE) properties. However, for commercial applications the performance of the material, described by the thermoelectric figure of merit ... -
The Relationship between Hydroxyl Content and Viscosity of Fused Silica for the Czochralski Process
(Master thesis, 2019)Kvartsglass av høy kvalitet brukes i digler til produksjon av monokrystallinske silisium "ingots" i solcellein- dustrien. Monokrystallinske wafere blir laget i slike digler ved Czochralski(CZ)-prosessen. Digelen kan ikke ... -
The Role and Persepective of Electrodialysis in Electrowinning of Silver from Secondary Materials
(Master thesis, 2023)Effektiv resirkulering av sølv er essensielt dersom man skal klare å dekke den stadig økende etterspørselen av sølv i alt fra medisinsk utstyr, til elektriske biler og solceller. Denne masteroppgaven fokuserer derfor på ... -
The role of grain boundary scattering in reducing the thermal conductivity of polycrystalline XNiSn (X=Hf, Zr, Ti) half-Heusler alloys
(Journal article; Peer reviewed, 2017)Thermoelectric application of half-Heusler compounds suffers from their fairly high thermal conductivities. Insight into how effective various scattering mechanisms are in reducing the thermal conductivity of fabricated ... -
The role of isopropanol-containing solvent on the silicon powders properties
(Master thesis, 2023)Denne masteroppgaven tar sikte på å undersøke innflytelsen av ulike løsningsmidler på ulike egenskaper ved silisium, inkludert overflategrupper, partikkelstørrelse, spesifikk overflateareal og morfologi. Silisium blir mye ... -
The role of vacancy condensation for the formation of voids in rutile TiO2 nanowires
(Journal article; Peer reviewed, 2017)Titanium dioxide nanowire (NW) arrays are incorporated in many devices for energy conversion, energy storage, and catalysis. A common approach to fabricate these NWs is based on hydrothermal synthesis strategies. A drawback ... -
The Significance of Gas-Phase Mass Transport in Assessment of k(chem) and D-chem
(Journal article; Peer reviewed, 2013)In this work, the validity of electrical conductivity relaxation (ECR) as a method for the assessment of chemical surface exchange, kchem, and bulk diffusion, Dchem, coefficients is investigated with respect to mass transport ... -
The susceptibility of grade 70 anchor chain steel to HISC
(Master thesis, 2011)Due to recent fractures in grade 70 anchor chains in the fish farming industry, chain supplier Erling Haug AS has initiated an examination of a sandblasted anchor they sell today. The sandblasted anchor chain is of the ... -
The Susceptibility to Hydrogen Induced Stress Cracking for Alloy 718 and Alloy 725
(Master thesis, 2014)The Hydrogen Induced Stress Cracking (HISC) susceptibility of Alloy 718 and Alloy 725 where examined and compared. Pre-charged samples of each alloy where stepwise loaded during polarization in Cortest Proof rings. A safe ... -
The thermophysical properties of raw materials for ferromanganese production
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:47, Doctoral thesis, 2012) -
The Use of Aluminium in Sustainable Concrete Structures
(Master thesis, 2020)Denne masteroppgaven er en del av det norske forskningsprosjektet DARE2C som er finansiert av Norges forskningsråd. Ved å erstatte stålarmering med aluminiumarmering, ønsker DARE2C å utvikle en ny, mer holbar og miljøvennlig ... -
The Use of Biocarbon in the Acheson Process for Production of Silicon Carbide
(Bachelor thesis, 2023)Den største andelen silisiumkarbid (SiC) produseres gjennom Acheson-prosessen, noe som forårsaker høye klimautslipp. For å motvirke dette kan biokarbon brukessom erstatning av petroleumskoks, som er den mest brukte ... -
The Use of Eutectic Fe-Si-B Alloy as a Phase Change Material in Thermal Energy Storage Systems
(Journal article; Peer reviewed, 2019)Fe-26.38Si-9.35B eutectic alloy is proposed as a phase change material (PCM) as it exhibits high latent heat, high thermal conductivity, moderate melting point, and low cost. For successful implementation of it in the ... -
The Use of Eutectic Fe-Si-B Alloy as a Phase Change Material in Thermal Energy Storage Systems
(Journal article; Peer reviewed, 2019)Fe-26.38Si-9.35B eutectic alloy is proposed as a phase change material (PCM) as it exhibits high latent heat, high thermal conductivity, moderate melting point, and low cost. For successful implementation of it in the ... -
Theoretical and Experimental Determination of Thermomechanical Properties of Epoxy-SiO2 Nanocomposites
(Peer reviewed; Journal article, 2023)Improvements in the thermomechanicalproperties of epoxy upon inclusion of well-dispersed SiO2nanoparticles have been demonstrated both experimentally and through molecular dynamics simulations.The SiO2was represented by ... -
Theoretical study and mathematical modelling on the reaction rates in the SiMn-production process
(Master thesis, 2016)AbstractThe reduction rate of MnO and SiO2in the furnace stage of metallurgical silicomanganese productionhas been studied to increase the current understanding of the SiMn-alloy production process. ... -
Thermal and mechanical properties of crack-designed thick lanthanum zirconate coatings
(Journal article; Peer reviewed, 2014)Vertical cracks are beneficial in thermal barrier coatings due to enhanced thermo-mechanical compliance. Accordingly, an aqueous nitrate based precursor solution was atomized on stainless steel substrates by spray pyrolysis ... -
Thermal characterisation of anode materials for Li-ion batteries
(Master thesis, 2012)Coin cells with lithium and graphite electrodes were assembled using different combinations of graphite material and electrolyte. Specifically, three commercially available graphite materials and five electrolyte compositions ...