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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
91

Microstructure/electrical property correlations in ceramic matrix composites

Kokan, Julie Runyan 08 1900 (has links)
No description available.
92

High dielectric constant materials development and electrical simulation of embedded capacitors

Rao, Yang 05 1900 (has links)
No description available.
93

INFLUENCE OF FERRITE PHASE IN ALITE-CALCIUM SULFOALUMINATE CEMENTS

Duvallet, Tristana Y 01 January 2014 (has links)
Since the energy crisis in 1970’s, research on low energy cements with low CO2-emissions has been increasing. Numerous solutions have been investigated, and the goal of this original research is to create a viable hybrid cement with the components of both Ordinary Portland cement (OPC) and calcium sulfoaluminate cement (CSAC), by forming a material that contains both alite and calcium sulfoaluminate clinker phases. Furthermore, this research focuses on keeping the cost of this material reasonable by reducing aluminum requirements through its substitution with iron. The aim of this work would produce a cement that can use large amounts of red mud, which is a plentiful waste material, in place of bauxite known as an expensive raw material. Modified Bogue equations were established and tested to formulate this novel cement with different amounts of ferrite, from 5% to 45% by weight. This was followed by the production of cement from reagent chemicals, and from industrial by-products as feedstocks (fly ash, red mud and slag). Hydration processes, as well as the mechanical properties, of these clinker compositions were studied, along with the addition of gypsum and the impact of a ferric iron complexing additive triisopropanolamine (TIPA). To summarize this research, the influence of the addition of 5-45% by weight of ferrite phase, was examined with the goal of introducing as much red mud as possible in the process without negatively attenuate the cement properties. Based on this PhD dissertation, the production of high-iron alite-calcium sulfoaluminate-ferrite cements was proven possible from the two sources of raw materials. The hydration processes and the mechanical properties seemed negatively affected by the addition of ferrite, as this phase was not hydrated entirely, even after 6 months of curing. The usage of TIPA counteracted this decline in strength by improving the ferrite hydration and increasing the optimum amount of gypsum required in each composition. The mechanical data were equivalent to OPC strengths for some compositions with 25% ferrite. This preliminary work constitutes the first research phase of this novel cement and requires additional research for its improvement. Topics for additional research are identified in this dissertation.
94

High-resolution analytical electron microscopy and creep deformation of silicon nitride ceramics /

Jin, Qiang. January 1998 (has links)
Thesis (Ph.D.) -- McMaster University, 1998. / Includes bibliographical references (leaves 186-196). Also available via World Wide Web.
95

Evaluation of pre and post treatment filtration performance of Kinetico Macrolite ceramic media compared to traditional sand/anthracite and GAC filters in drinking water treatment process

Cochran, Jeff W. January 2008 (has links) (PDF)
Thesis (Ph. D.)--University of Alabama at Birmingham, 2008. / Additional advisors: Robert A. Angus, Joe J. Gauthier, Jason T. Kirby, Robert W. Peters. Description based on contents viewed June 12, 2008; title from title screen. Includes bibliographical references (p. 85-87).
96

Modeling of the reaction-based processing of aluminum oxide (RBAO) and alumina-aluminide alloys (3A) /

Gaus, Shaun Patrick, January 1997 (has links)
Thesis (Ph. D.)--Lehigh University, 1997. / Includes vita. Includes bibliographical references (leaves 218-227).
97

Corrosion resistance of modified [beta]-Eucryptite /

Battu, Laurent P., January 1991 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 65-68). Also available via the Internet.
98

A study on electrolytic in-process dressing (ELID) grinding of sapphire with acoustic emission monitoring /

Han, Peidong. January 2009 (has links)
Thesis (M.S.)--University of Toledo, 2009. / Typescript. "Submitted as partial fulfillments of the requirements for The Master of Science Degree in Mechanical Engineering." "A thesis entitled"--at head of title. Bibliography: leaves 104-110.
99

Ultrasonic nondestructive evaluation of armor ceramics

Brennan, Raymond. January 2007 (has links)
Thesis (Ph. D.)--Rutgers University, 2007. / "Graduate Program in Ceramic and Materials Science and Engineering." Includes bibliographical references (p. 494-501).
100

Pressureless sintering and oxidation resistance of zrb2 based ceramic composites

Peng, Fei. January 2009 (has links)
Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Robert F. Speyer; Committee Member: George Kardomateas; Committee Member: Preet Singh; Committee Member: Robert L. Snyder; Committee Member: Thomas H. Sanders, Jr.

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