Mageto maxwell (26 Ergebnisse)

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Taschenbuch. Zustand: Neu. Al-Mg-Si Alloys: Micostructure, Hardness and Tensile Properties | TEM Studies of Microstructure in Relation to Hardness and Ductility in Al-Mg-Si (6xxx) Alloys | Maxwell Mageto | Taschenbuch | 116 S. | Englisch | 2010 | LAP LAMBERT Academic Publishing | EAN 9783838329222 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu.…

Taschenbuch. Zustand: Neu. Optical and Electromagnetic Properties of doped Titanium Oxide Films | Maxwell Mageto | Taschenbuch | 240 S. | Englisch | 2019 | LAP LAMBERT Academic Publishing | EAN 9783659553172 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu.…

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Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Two different solution heat treatments were used to study precipitation in two 6xxx (Al-Mg-si) dispersoid-free-alloys with composition: 0.721 at % Si, 0.577 at % Mg and 0.57 at %Si 0.72 at % Mg. The relation between their microstructure and macroscopical properties such as hardness and ductility has been investigated. Tensile tests, hardness measurements, electrical conductivity sigma tests, grain size measurements in optical microscope and microstructure characterization in Transmission Electron Microscope (TEM) have all been done. The effect of alloy composition and solution heat treatment temperature and time on the microstructure and the resulting macroscopical properties (hardness, yield stress, tensile strength and ductility) was investigated. The results indicate that when alloy A3 is solution treated at 520°C for 10 minutes and then annealed for 3 hours at 175°C, its hardness, yield stress and tensile strength as well as ductility is optimised i.e.A3 has better mechanical properties and low cost of production at these conditions. It has been proved that the strengthening was solely due to precipitation particles and not grain size. 116 pp. Englisch.…

Zustand: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: MAGETO MAXWELLMaxwell J. Mageto, MSc: Studied Physics at the Norwegian University of Science and Technology, Norway. PhD candidate at Uppsala University, Sweden. Assistant lecturer University of Eastern Africa, Baraton, Kenya and Mas.…

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Titanium oxide has been extensively studied because of its usefulness in a wide variety of applications, including photo-catalysis, pigments and sensors. In this book, TCO thin films of TiO2:Nb and TiO2:Co were made by the spray pyrolysis technique. The films were deposited on Corning 7059, silicon and glass substrates at temperature 500 C and 475 C respectively using an alcoholic precursor solution consisting of titanium (iv) Isopropoxide with NbCl5 or Co(NO3)2. All as prepared films were amorphous, which were highly crystallized to be anatase TiO2 after air or hydrogen annealing. The TiO2:Nb films were then studied with regard to opto-electronic applications while TiO2:Co films were explored for magneto-optic applications. The influence of increasing Nb or Co dopant concentration on the electrical, optical, structural and (magneto-optical for CoxTi1-xO2) properties was investigated. The minimum resistivity, 3.36 cm, for Ti1-xNb2O2 film (x = 0.15) was obtained after 1 hour post deposition annealing in hydrogen atmosphere. Dispersion analysis using a model for dielectric susceptibility of the film consisting of two parts: Drude and Kim terms was used to simulate data. 240 pp. Englisch.…

Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Two different solution heat treatments were used to study precipitation in two 6xxx (Al-Mg-si) dispersoid-free-alloys with composition: 0.721 at % Si, 0.577 at % Mg and 0.57 at %Si 0.72 at % Mg. The relation between their microstructure and macroscopical properties such as hardness and ductility has been investigated. Tensile tests, hardness measurements, electrical conductivity sigma tests, grain size measurements in optical microscope and microstructure characterization in Transmission Electron Microscope (TEM) have all been done. The effect of alloy composition and solution heat treatment temperature and time on the microstructure and the resulting macroscopical properties (hardness, yield stress, tensile strength and ductility) was investigated. The results indicate that when alloy A3 is solution treated at 520°C for 10 minutes and then annealed for 3 hours at 175°C, its hardness, yield stress and tensile strength as well as ductility is optimised i.e.A3 has better mechanical properties and low cost of production at these conditions. It has been proved that the strengthening was solely due to precipitation particles and not grain size.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 116 pp. Englisch.…

Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Two different solution heat treatments were used to study precipitation in two 6xxx (Al-Mg-si) dispersoid-free-alloys with composition: 0.721 at % Si, 0.577 at % Mg and 0.57 at %Si 0.72 at % Mg. The relation between their microstructure and macroscopical properties such as hardness and ductility has been investigated. Tensile tests, hardness measurements, electrical conductivity sigma tests, grain size measurements in optical microscope and microstructure characterization in Transmission Electron Microscope (TEM) have all been done. The effect of alloy composition and solution heat treatment temperature and time on the microstructure and the resulting macroscopical properties (hardness, yield stress, tensile strength and ductility) was investigated. The results indicate that when alloy A3 is solution treated at 520°C for 10 minutes and then annealed for 3 hours at 175°C, its hardness, yield stress and tensile strength as well as ductility is optimised i.e.A3 has better mechanical properties and low cost of production at these conditions. It has been proved that the strengthening was solely due to precipitation particles and not grain size.…

Zustand: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: MAGETO MAXWELLMaxwell Mageto: Studied Physics at Moi University, Norwegian University of Science and Technology and University of Eldoret. He studied at Uppsala University under the sandwich programme with Moi University and sponsor.…

Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Titanium oxide has been extensively studied because of its usefulness in a wide variety of applications, including photo-catalysis, pigments and sensors. In this book, TCO thin films of TiO2:Nb and TiO2:Co were made by the spray pyrolysis technique. The films were deposited on Corning 7059, silicon and glass substrates at temperature 500¿C and 475¿C respectively using an alcoholic precursor solution consisting of titanium (iv) Isopropoxide with NbCl5 or Co(NO3)2. All as prepared films were amorphous, which were highly crystallized to be anatase TiO2 after air or hydrogen annealing. The TiO2:Nb films were then studied with regard to opto-electronic applications while TiO2:Co films were explored for magneto-optic applications. The influence of increasing Nb or Co dopant concentration on the electrical, optical, structural and (magneto-optical for CoxTi1-xO2) properties was investigated. The minimum resistivity, 3.36 ¿ cm, for Ti1-xNb2O2 film (x = 0.15) was obtained after 1 hour post deposition annealing in hydrogen atmosphere. Dispersion analysis using a model for dielectric susceptibility of the film consisting of two parts: Drude and Kim terms was used to simulate data.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 240 pp. Englisch.…

Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Titanium oxide has been extensively studied because of its usefulness in a wide variety of applications, including photo-catalysis, pigments and sensors. In this book, TCO thin films of TiO2:Nb and TiO2:Co were made by the spray pyrolysis technique. The films were deposited on Corning 7059, silicon and glass substrates at temperature 500 C and 475 C respectively using an alcoholic precursor solution consisting of titanium (iv) Isopropoxide with NbCl5 or Co(NO3)2. All as prepared films were amorphous, which were highly crystallized to be anatase TiO2 after air or hydrogen annealing. The TiO2:Nb films were then studied with regard to opto-electronic applications while TiO2:Co films were explored for magneto-optic applications. The influence of increasing Nb or Co dopant concentration on the electrical, optical, structural and (magneto-optical for CoxTi1-xO2) properties was investigated. The minimum resistivity, 3.36 cm, for Ti1-xNb2O2 film (x = 0.15) was obtained after 1 hour post deposition annealing in hydrogen atmosphere. Dispersion analysis using a model for dielectric susceptibility of the film consisting of two parts: Drude and Kim terms was used to simulate data.…

Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Le CH3NH3PbI3-xClx a été étudié expérimentalement et a donné des résultats prometteurs pour l'application photovoltaïque. Pour améliorer ses performances, cette étude a examiné l'effet de la variation de l'épaisseur du FTO, du TiO2 et du CH3NH3PbI3-xClx pour une cellule solaire en pérovskite ayant la structure verre/FTO/TiO2/ CH3NH3PbI3-xClx /Spiro-OMeTAD/Ag étudiée à l'aide du logiciel SCAPS-1D. Les paramètres de sortie obtenus dans la littérature pour l'appareil étaient de 26,11mA/cm2, 1,25V, 69,89% et 22,72% pour Jsc, Voc, FF et respectivement. La cellule solaire optimisée avait une épaisseur de 100 nm, 50 nm et 300 nm pour les couches de FTO, TiO2 et CH3NH3PbI3-xClx respectivement et le rendement de l'appareil était de 25,79 mA/cm2, 1,45 V, 78,87 % et 29,56 % pour Jsc, Voc, FF et respectivement montrant une augmentation remarquable de FF de 8,98 % et 6,84 % pour le rendement de la cellule solaire. L'étude a commencé par une modélisation optique des films minces monocouches de FTO et multicouches de FTO/TiO2 sur un substrat de verre. Les films multicouches ont été caractérisés et optimisés par des simulations optiques utilisant la modélisation MATLAB basée sur les équations de Fresnel et le formalisme de la matrice de Macleod en utilisant les valeurs n et k de la littérature. Les résultats de la simulation montrent le potentiel de fabrication.…

Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - CH3NH3PbI3-xClx is experimenteel onderzocht en heeft veelbelovende resultaten laten zien voor fotovoltaïsche toepassingen. Om de prestaties te verbeteren, heeft deze studie het effect van verschillende diktes van FTO, TiO2 en CH3NH3PbI3-xClx voor een perovskite-zonnecel met de structuur glas/FTO/TiO2/ CH3NH3PbI3-xClx /Spiro-OMeTAD/Ag onderzocht met behulp van SCAPS-1D software. De uit de literatuur verkregen uitgangsparameters voor het apparaat waren 26,11mA/cm2, 1,25V, 69,89% en 22,72% voor respectievelijk Jsc, Voc, FF en. De geoptimaliseerde zonnecel had een dikte van 100nm, 50nm en 300nm voor FTO, TiO2 en CH3NH3PbI3-xClx lagen respectievelijk en het apparaat output waren 25.79mA/cm2, 1.45V, 78.87% en 29.56% voor Jsc, Voc, FF en met een opmerkelijke toename van FF met 8.98% en 6.84% voor zonnecel rendement. De studie is begonnen met het uitvoeren van optische modellering van FTO single layer en FTO/TiO2 multilayer thin films op glassubstraat. De meerlaagse films werden gekarakteriseerd en geoptimaliseerd door optische simulaties met behulp van MATLAB-modellering op basis van Fresnel-vergelijkingen en Macleod Matrix-formalisme door gebruik te maken van n- en k-waarden uit de literatuur. De simulatieresultaten tonen het potentieel aan van het fabriceren van een verbeterde.…

Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - CH3NH3PbI3-xClx by¿ badany do¿wiadczalnie i wykazä obiecuj¿ce wyniki dla zastosowä fotowoltaicznych. W celu zwi¿kszenia jego wydajno¿ci badano wp¿yw ró¿nej grubo¿ci FTO, TiO2 i CH3NH3PbI3-xClx na perowskitowe ogniwo s¿oneczne o strukturze szk¿o/FTO/TiO2/ CH3NH3PbI3-xClx /Spiro-OMeTAD/Ag badane przy u¿yciu oprogramowania SCAPS-1D. Uzyskane z literatury parametry wyj¿ciowe urz¿dzenia wynosi¿y odpowiednio 26,11mA/cm2, 1,25V, 69,89% i 22,72% dla Jsc, Voc, FF i 22,72%. Zoptymalizowane ogniwo s¿oneczne miäo grubo¿¿ 100nm, 50nm i 300nm odpowiednio dla warstw FTO, TiO2 i CH3NH3PbI3-xClx, a wydajno¿¿ urz¿dzenia wynosi¿a 25,79mA/cm2, 1,45V, 78,87% i 29,56% dla warstw Jsc, Voc, FF oraz wykazäa znacz¿cy wzrost FF o 8,98% i 6,84% dla wydajno¿ci ogniwa. Badania rozpocz¿¿y si¿ od pierwszego przeprowadzenia optycznego modelowania jednowarstwowych i wielowarstwowych cienkich warstw FTO/TiO2 na szklanym pod¿o¿u. Wielowarstwowe folie scharakteryzowano i zoptymalizowano poprzez symulacje optyczne z wykorzystaniem modelowania MATLAB opartego na równaniach Fresnela i formalizmie Macleod Matrix, wykorzystuj¿c warto¿ci n i k z literatury. Wyniki symulacji wskazuj¿ na potencjä wytwarzania ulepszonych.…

Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - CH3NH3PbI3-xClx tem sido estudado experimentalmente e tem mostrado resultados promissores para aplicação fotovoltaica. Para melhorar seu desempenho, este estudo investigou o efeito da variação de espessura de FTO, TiO2 e CH3NH3PbI3-xClx para uma célula solar perovskite com a estrutura de vidro/FTO/TiO2/ CH3NH3PbI3-xClx /Spiro-OMeTAD/Ag estudada usando o software SCAPS-1D. Os parâmetros de saída obtidos da literatura para o dispositivo foram 26,11mA/cm2, 1,25V, 69,89% e 22,72% para Jsc, Voc, FF e respectivamente. A célula solar optimizada teve uma espessura de 100nm, 50nm e 300nm para as camadas FTO, TiO2 e CH3NH3PbI3-xClx respectivamente e a saída do dispositivo foi de 25,79mA/cm2, 1,45V, 78,87% e 29,56% para Jsc, Voc, FF e mostrando um notável aumento de 8,98% e 6,84% para a eficiência da célula solar, respectivamente. O estudo teve início com a primeira modelação óptica de filmes finos FTO monocamada e FTO/TiO2 multicamadas sobre substrato de vidro. Os filmes multicamadas foram caracterizados e optimizados por simulações ópticas utilizando a modelação MATLAB baseada em equações Fresnel e formalismo Macleod Matrix, empregando valores n e k da literatura. Os resultados das simulações mostram o potencial de fabricação.…

Taschenbuch. Zustand: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - CH3NH3PbI3-xClx è stato studiato sperimentalmente e ha mostrato risultati promettenti per l'applicazione fotovoltaica. Per migliorare le sue prestazioni, questo studio ha studiato l'effetto del variare dello spessore di FTO, TiO2 e CH3NH3PbI3-xClx per una cella solare perovskite con struttura in vetro/FTO/TiO2/ CH3NH3PbI3-xClx /Spiro-OMeTAD/Ag studiata con il software SCAPS-1D. I parametri di uscita ottenuti dalla letteratura per il dispositivo sono stati 26,11mA/cm2, 1,25V, 69,89% e 22,72% per Jsc, Voc, FF e rispettivamente. La cella solare ottimizzata aveva uno spessore di 100nm, 50nm e 300nm per gli strati FTO, TiO2 e CH3NH3PbI3-xClx e l'uscita del dispositivo era rispettivamente di 25,79mA/cm2, 1,45V, 78,87% e 29,56% per Jsc, Voc, FF e mostravano rispettivamente un notevole aumento di FF del 8,98% e 6,84% per l'efficienza della cella solare. Lo studio è iniziato con l'esecuzione di una prima modellazione ottica di film sottili FTO monostrato e FTO/TiO2 multistrato su substrato di vetro. I film multistrato sono stati caratterizzati e ottimizzati mediante simulazioni ottiche utilizzando la modellazione MATLAB basata sulle equazioni di Fresnel e il formalismo di Macleod Matrix utilizzando i valori n e k della letteratura. I risultati della simulazione mostrano il potenziale di fabbricare una migliore.…

Zustand: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. CH3NH3PbI3-xClx wurde experimentell untersucht und hat vielversprechende Ergebnisse fuer die photovoltaische Anwendung gezeigt. Um die Leistung zu verbessern, untersuchte diese Studie den Effekt der unterschiedlichen Dicke von FTO, TiO2 und CH3NH3PbI3-xClx f.…