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  • Influences of Replacing Cr with Mo in Fe25Co25Ni25Cr25-XMoX High Entropy Alloy Series on the Microstructure and Mechanical Properties

    Creator:
    Xu, Yifan
    Abstract:
    Fe25Co25Ni25Cr25-XMoX High Entropy Alloys were fabricated in mini arc-melter and then cast into 4mm diameter cylinders by injection casting technique and 1cm diameter cylinders by water quenching technique. Heat transfer modeling during solidification of FeCoNiCr HEA was simulated. Combining X-Ray Diffraction, Optical Microscopy, Scanning Electron Microscope, Energy Dispersive X-ray analysis,...
    Resource Type:
    Masters Thesis
    Full Text:
    Replacing Cr with Mo in Fe25Co25Ni25Cr25-XMoX High Entropy Alloy Series on the Microstructure and

  • Development of new high-temperature piezoelectric perovskite ceramics

    Creator:
    Ansell, Troy Youngmin
    Abstract:
    Lead zirconate titanate (PZT) is the dominant ferroelectric material in the market due to its excellent piezoelectric properties, relatively high Curie transition temperature (T[subscript C]), low cost, etc. However, because of emerging applications with requirements for high temperature (T[subscript C] > 400 °C) ferroelectrics, researchers are increasingly looking at alternative...
    Resource Type:
    Dissertation
    Full Text:
    . Appl. Phys. 41, 2099–2104 (2002). 4. Bao, X., Bar-Cohen, Y., Sherrit, S., Badescu, M. & Shrout, T. R

  • Novel ternary graphite intercalation compounds of alkali metal cations and amines

    Creator:
    Maluangont, Tosapol
    Abstract:
    Novel ternary graphite intercalation compounds (GICs) of alkali metal cations and a wide variety of amines have been synthesized by one-pot chemical syntheses. Alkali metals studied includes Li, Na and K. The families of amines employed are nalkylamines, branched alkylamines, and different structural isomers of diamines and polyamines. Intragallery structures...
    Resource Type:
    Dissertation
    Full Text:
    when appropriate. A homologous series of M-n-alkylamine-GICs (M = Na, Li) is reported for the

  • Mental Models of Mere Mortals with Explanations of Reinforcement Learning

    Creator:
    Anderson, Andrew A.
    Abstract:
    How should reinforcement learning (RL) agents explain themselves to humans not trained in AI? To gain insights into this question, we conducted a 124 participant, four-treatment experiment to compare participants’ mental models of an RL agent in the context of a simple Real-Time Strategy (RTS) game. The four treatments isolated...
    Resource Type:
    Masters Thesis
    Full Text:
    Mere Mortals with Explanations of Reinforcement Learning Abstract approved: Margaret M. Burnett How

  • Mechanical Behavior of Elastomer Polymer under Shear and Compression: Experimental Investigation Using Digital Image Correlation

    Creator:
    Raheem, Hassan M.
    Abstract:
    Due to their viscoelastic properties, polymers and hydrogels are widely used in many applications. In this study, the viscoelastic properties of elastomer polymers were investigated for a series of hydrogel, hydrogel composites and silicon materials. A primary application for hydrogels and hydrogel composites is as a replacement for the degenerated...
    Resource Type:
    Dissertation
    Full Text:
    ). ................................. 34 Figure 3.4 The average stress- strain data of 1.5 wt.% agarose and 4 wt.% agarose samples under

  • Graphite intercalation with fluoroanions by chemical and electrochemical methods

    Creator:
    Özmen Monkul, Bahar
    Abstract:
    New acceptor-type graphite intercalation compounds (GICs) containing perfluoroalkyl anions have been synthesized by using both chemical and electrochemical methods and characterized by elemental and thermogravimetric analyses. Investigation into these graphite intercalation compounds can provide novel materials and a detailed understanding of their properties. GICs of composition Cx[FB(C₂F₅)₃]·δF are prepared for...
    Resource Type:
    Dissertation
    Full Text:
    . H 0 298 (net intercalation reaction) = H 0 298 (step 1 + step 2 + step 3 + step 4) (1.6

  • Exploratory Studies Within the Exotic Lyonsite Structure

    Creator:
    Tang, Joseph N.
    Abstract:
    Structure-property relationships have always underpinned the field of solid state chemistry; dependable structural descriptions are integral to understanding and controlling the physical properties of inorganic compounds old and new. While a handful of crystal structures are celebrated for their versatility, flexibility, and functionality, the existence of more exotic structures is...
    Resource Type:
    Dissertation
    Full Text:
    ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203 B.3 Average degradation plot for MB over 2 h irradiation time. . . . . . . 204 B.4 Degradation

  • Structure-property relationships in oxides containing tellurium

    Creator:
    Siritanon, Theeranun
    Abstract:
    Oxides of post-transition metals often show unique structures and properties due to the presence of lone pair electrons and the diffused s orbitals. The present work focuses on synthesis and characterizations of oxides containing Te, a heavy post transition metal. New series of pyrochlore oxides of the formula Cs(M,Te)₂O₆ (M...
    Resource Type:
    Dissertation
    Full Text:
    metal. New series of pyrochlore oxides of the formula Cs(M,Te)2O6 (M = Al, Ga, Cr, Fe, Co, In, Ho

  • New luminescent materials and high-performance solution-processed oxide thin films

    Creator:
    Jiang, Kai
    Abstract:
    Crystals of an incongruent-melting compound, Ba₃MgSi₂O₈, were grown by the flux method and its structure was determined by single crystal X-ray diffraction methods. Ba₃MgSi₂O₈ crystallizes in trigonal space group P-3[bar]m1 with a = 5.6123(3) Å, c = 7.2667(9) Å and Z = 1. Eu²⁺ ions prefer one crystallographic Ba site...
    Resource Type:
    Dissertation
    Full Text:
    .; Teich, M. C. Fundamental of Photonics, 2nd edition, Wiley: New Jersey, 2007. [3] McIntyre, D. H

  • Dynamic and Dual Streaming Methods for H.264 Video and Parallel Performance Modeling

    Creator:
    Johnson, Taylor N.
    Abstract:
    Traditional approaches to streaming H.264 video over a network typically rely on a single method of transport (i.e., reliable or unreliable) and/or use static values for parameters that can have a significant negative impact on the perceptual quality of the received video. This dissertation presents a dynamic method for wireless...
    Resource Type:
    Dissertation
    Full Text:
    Transmission using H.264 over WLANs 4 2.1 Introduction