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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.
31

Iron phosphate glass for the vitrification of INEEL sodium bearing waste and Hanford low activity waste

Leerssen, Robert Douglas, January 2002 (has links) (PDF)
Thesis (M.S.)--University of Missouri--Rolla, 2002. / Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed August 25, 2008) Includes bibliographical references.
32

Properties and performance of a ceramic composite component /

Dunyak, Thomas John, January 1991 (has links)
Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 186-194). Also available via the Internet.
33

Ionic mobility and superplasticity in ceramics /

Vilette, Anne L., January 1994 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 84-86). Also available via the Internet.
34

Discrete element modelling of silicon nitride ceramics crack formation and propagation in indentation test and four point bending test /

Senapati, Rajeev. January 2009 (has links)
Thesis (M.S.)--University of Texas at El Paso, 2009. / Title from title screen. Vita. CD-ROM. Includes bibliographical references. Also available online.
35

Study on machinability of high strength gray cast irons and steels with ceramic and carbide tools

Ham, Inyong, January 1958 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1958. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 171-177).
36

Studies of silica supported metal catalysts

Brown, Carole Elizabeth. Stiegman, Albert E. January 2006 (has links)
Thesis (M.S.)--Florida State University, 2006. / Advisor: Albert E. Stiegman, Florida State University, College of Arts and Sciences, Dept. of Chemistry and Biochemistry. Title and description from dissertation home page (viewed Sept. 19, 2006). Document formatted into pages; contains xiii, 83 pages. Includes bibliographical references.
37

Phase stability and defect structure determination of polytitanate compunds in the BaO-TiO2 system /

Javadpour, Jafar, January 1988 (has links)
Thesis (Ph. D.)--Oregon Graduate Center, 1988.
38

A study of clay bodies and glazes for the South African studio potter

Boyum, Karin 07 August 2014 (has links)
M.Tech. (Ceramics) / The research project attempts to fill a void by assembling data dealing with a comprehensive range of South African clay and glaze materials, suited to the needs of the studio potter, and recording test results. South African kaolins, ball clays, fireclays, miscellaneous clays, grogs, bentonites, felspathic materials, alkaline earths, silica, refractory materials (other than clays) and mineral pigments are dealt with. A limited selection of foreign materials, frequently referred to in studio-potter publications, was also used in comparative tests. The materials are recorded with reference to the ultimate analysis, seger formula, proximate analysis (where applicable), properties and results of trials using the materials in clay bodies and/or glazes. It was demonstrated that South African materials are largely of good quality e.g. kaolin, felspars and silica. Variability of clay supplies because of lack of stockpiling and blending practices, especially by small suppliers, is often a problem. When the composition of glaze materials and trials indicated that imported equivalents were superior because of variability of local supplies or poor grade material, then substitutes were tested using South African materials. Basic clay bodies and glazes covering a wide temperature range from Egyptian Paste, low-fired wares such as raku, terracotta-and-white-earthenwares, stoneware and soft-porcelain bodies and glazes are dealt with giving a brief outline of the requirements for each type. Suggestions of suitable South African materials for their composition are made. Trials and results are recorded. The knowledge gained of South African materials available and a study of the materials enables the studio potter to utilize local materials with awareness and confidence
39

Residual stress development in laminated ceramic bodies /

Brubaker, Burton Dale January 1962 (has links)
No description available.
40

PTCR effect in La2CO3 doped BaTiO2 ceramic sensors

Puli, Venkata Sreenivas Unknown Date (has links)
The positive temperature coefficient of resistivity (PTCR) sensors is resistor materials that undergo a sharp change in resistivity at a designed Curie temperature due to its unique structure and chemical composition. This effect serves important control functions in a wide variety of electronic circuitry and similar applications. Conventional calcining of mixed oxides method (CMO) is used for fabricating lanthanum doped barium titanate (BaTiO3) for PTCR behaviour through solid-state-sintering route, at 1100°C, 1350°C. Two batches of samples were fabricated at low and high sintering temperatures of 1100°C, 1350°C respectively. The effect of different concentrations of donor dopant on BaTiO3 on the electrical properties of Ba(1-x)LaxTiO3 with x= 0.0005, 0.001, 0.002, 0.0025, 0.003 mol%, is investigated at low sintering temperature. The influence of lantanum doping with Al2O3+SiO2+TiO2 (AST) as sintering aids on the electrical properties of Ba(1-x)LaxTiO3 with x= 0.0005, 0.001, 0.003 mol%, is also investigated. The results of the electrical characterization for the first batch of samples showed an increase in room temperature resistance with increaisng donor concentration. Also the results of the electrical characterization for the second batch of samples also showed the same increase in room temperature resistance with increasing donor concentration. For first batch of sensors the high room temperature resistance keeps the jump small and these materials showed V-shaped NTCR-PTCR multifunctional cryogenic sensor behavior with a strong negative coefficient of resistance effect at room temperature.Where as the second batch of sensors showed few orders of magnitude rise in resistivity values. The La-doped BaTiO3 ceramics co-doped with Mn gives an enhanced PTCR effect which can be exploited for various sensor applications.

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