Browsing Institutt for materialteknologi by Title
Now showing items 1735-1754 of 2513
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Photoelectrochemical Characterization of Dye-sensitized Solar Cells
(Master thesis, 2018)Dye-sensitized solar cells, DSSCs, are thin film solar cells based on a photoelectrochemical system where a photo-sensitized anode and an electrolyte forms a semiconductor. Upon exposure of sunlight, the surface of the ... -
Photoelectrochemical Hydrogen Production
(Master thesis, 2012)The possibilities for using CaNb2O6 as a photocatalyst in direct water splitting have been evaluated by investigating the electronic structure of the material. In addition the oxide was doped with nitrogen in order to ... -
Physical and Mechanical Properties of Graphene Nanoplatelets Reinforced Al6061-T6 Composites processed by Spark Plasma Sintering
(Peer reviewed; Journal article, 2020)Aluminium matrix composites with high specific strength are attracting attention for use in automobile and aerospace applications. Graphene nanoplatelets (GNPs) were added in 0.1, 0.5, and 1 weight fractions to an Al6061 ... -
Physual Designing - A Supportive Framework for Dispersed Engineering Design
(Dr. ingeniøravhandling, 0809-103X; 2003:56, Doctoral thesis, 2003)Corporations involved in engineering design face multiple challenges; collaboration in complex, geographically dispersed value chains, increasing pressure to reduce lead times to improve their competitive positions, and ... -
Piezoelectric K0.5Na0.5NbO3 Ceramics Textured Using Needlelike K0.5Na0.5NbO3 Templates
(Journal article; Peer reviewed, 2014)Improved performance by texturing has become attractive in the field of lead-free ferroelectrics, but the effect depends heavily on the degree of texture, type of preferred orientation, and whether the material is a rotator ... -
Piezoelectricity and rotostriction through polar and non-polar coupled instabilities in bismuth-based piezoceramics
(Peer reviewed; Journal article, 2016)Coupling of order parameters provides a means to tune functionality in advanced materials including multiferroics, superconductors, and ionic conductors. We demonstrate that the response of a frustrated ferroelectric state ... -
Piezoresponse force microscopy and nanoferroic phenomena
(Journal article; Peer reviewed, 2019)Since its inception more than 25 years ago, Piezoresponse Force Microscopy (PFM) has become one of the mainstream techniques in the field of nanoferroic materials. This review describes the evolution of PFM from an imaging ... -
Pilot scale fabrication of lanthanum tungstate supports for H<inf>2</inf> separation membranes
(Peer reviewed; Journal article, 2022)This paper reports the fabrication of asymmetric tubular geometry lanthanum tungstate-based membranes for high temperature H2 separation applications. As starting materials, powders with the compositions La28-yW4+yO54+δ ... -
Pilot Scale Production of Manganese Ferroalloys Using Heat-Treated Mn-Nodules
(Journal article; Peer reviewed, 2017)Pilot-scale experiments are one way to investigate the process patterns and the reaction mechanisms of processes and raw materials. To understand a process fully, both theoretical considerations as well as small-scale ... -
Pilot-Scale Test of Flue Gas Recirculation for The Silicon Process
(Peer reviewed; Journal article, 2022)Flue gas recirculation (FGR) for the silicon process may facilitate increasing the CO2 concentration in the off-gas, which will be beneficial for potential future carbon capture. Lower oxygen concentration in the combustion ... -
Pinpointing basic sites formed upon incorporation of iron in hierarchical SAPO-11 using catalytic model reactions
(Peer reviewed; Journal article, 2022)By utilizing previously established catalytic model reactions, a method for probing the topological location of transition metal sites incorporated in hierarchical silicoaluminophosphates (SAPOs) is presented. For the first ... -
Pistachio‐Shuck‐Like MoSe2/C Core/Shell Nanostructures for High‐Performance Potassium‐Ion Storage
(Journal article; Peer reviewed, 2018)Potassium‐ion batteries (KIBs) have recently attracted intensive attention because of the abundant potassium resources and their low cost and high safety. However, the major challenge faced by KIBs lies in the lack of ... -
Pitting and Crevice Corrosion of Stainless Steel under Offshore Conditions
(Master thesis, 2012)AISI 316/316L has traditionally been used in offshore topside environments when operating under low temperatures. It has been observed that the AISI 316/316L piping suffer from severe attacks of pitting and crevice corrosion ... -
Pitting corrosion of additive manufactured AISI 316L and Alloy 718
(Master thesis, 2020)Additivprodusert stål har gunstige produksjonsaspekter i både et effektivt og økonomisk syn sammenlignet med tradisjonelle produksjonsmetoder. Før tradisjonelt produserte korrosjonsbestandige legeringer blir skiftet ut med ... -
Pitting Corrosion of Super Duplex Stainless Steel - Effect of Isothermal Heat Treament
(Master thesis, 2016)Super duplex stainless steels (SDSS), with a chromium content of 25 wt$\%$, contain a duplex structure which consists of ferrite and austenite, and have a pitting resistance equivalent number (PREN) equal or higher than ... -
Pitting Corrosion of Super Duplex Stainless Steel - Effect of Tungsten and Isothermal Heat Treatments
(Master thesis, 2017)Duplex stainless steels (DSS) and super duplex stainless steels (SDSS) can be described as austenitic-ferritic stainless steels with a chromium content of 22 and 25 %, respectively. Because of their good combination of ... -
Pitting on Carbon Cathodes in Aluminium Electrolysis Cells
(Journal article; Peer reviewed, 2018)Uneven cathode wear is one of the key challenges for the lifetime of aluminium electrolysis cells. Here we report on autopsy of several potlinings with focus on the surface morphology of the carbon cathodes. The surface ... -
Plastic-Anisotropy Modelling: Texture, Strain-Rate and Strain-Path Changes
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:304, Doctoral thesis, 2013)The work presented in this thesis deals with the computational modelling of the plastic anisotropy induced in the materials during the deformation process on three different scales. The main mechanism responsible for plastic ... -
Plasticity of solid solution Al-Mn and Al-Mn-Si alloys
(Journal article, 2024)The influence of Mn and Si on the mechanical properties of solid solution Al-Mn and Al-Mn-Si alloys have been studied at 4 K, 78 K, and 298 K. The solute strengthening potency of the yield strength increases with decreasing ... -
Plastpellets i marint miljø: kildesporing og nedbrytning av pellets fra utslipp ved kysten av Sør-Afrika og Norge
(Bachelor thesis, 2021)Utslipp av plastpellets er en av de mest omfattende kildene til plastforurensning i det marine miljø. Pelletene defineres som mikroplast, og kan potensielt medføre store konsekvenser for livet i havet. Utslippene gir ...