Preparation and Characterization of Hydrolyzed Zirconia Film on Basalt Fiber by the Sol-gel Process PDF Download
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Author: Taehwan Jung
Publisher:
ISBN:
Category : Zirconium oxide
Languages : en
Pages : 156
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Book Description
Author: Taehwan Jung
Publisher:
ISBN:
Category : Zirconium oxide
Languages : en
Pages : 156
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Book Description
Author: Wade H. Shafer
Publisher: Springer
ISBN: 9780306437328
Category : Science
Languages : en
Pages : 448
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Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Oata Analysis and Synthesis (CINOAS) * at Purdue. University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 33 (thesis year 1988) a total of 13,273 theses titles from 23 Canadian and 1 85 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 33 reports theses submitted in 1988, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Author:
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 70
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Book Description
Materials with nanometer size particles exhibit unique and physical properties. In particular, nanocomposite materials, composed of nanometric metal and metal oxide particles embedded in vitreous matrices, present a variety of interesting magnetic, electric and catalytic properties, that are strongly size-dependent. Among the different preparation methods which can be used to obtain this kind of materials, the sol-gel process is particularly interesting because it is affected by several parameters which allow a versatile control of the structural, textural and chemical properties of the final products.
Author: C. W. Turner
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Khwanchit Wongcharee
Publisher:
ISBN:
Category : Ceramic materials
Languages : en
Pages : 402
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Author: R. Reisfeld
Publisher:
ISBN:
Category :
Languages : en
Pages : 41
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Book Description
Thin glass films prepared by the sol-gel method were deposited on glass supports. Divalent cobalt and divalent copper were used as optical probes for changes in the glass formation and re-arrangement of the silicate groups during the heat-treatments whereby the cobalt ion initially octahedrally coordinated was transformed into lower coordination as a result of elimination of water and increase of density of the glass. Divalent copper is also effective in infrared absorption and silver particles embedded in the films form narrow-band absorbing filter. Characterization of surfaces of thin films applied in coatings for lasers and laser windows is important in understanding and preventing damage of these materials. (jes).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
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Book Description
We have investigated the effects of precursor nature and heat treatment schedule on the densification and crystallization behavior of sol-gel derived zirconia thin films. Precursor solutions were prepared from n-propanol, zirconium (IV) n-propoxide, and either acetic acid, or 2,4-pentanedione (acac) and water additions. By controlling the ligand type and ligand-to-metal ratio, we were able to prepare films which displayed significant differences in densification behavior. We attribute the dissimilarity in densification to variations in the nature of the as-deposited films, as influenced by ligand type and concentration. While the acac- derived film was a physical gel, (i.e., a physical aggregation of the oligomeric species), the acetic acid-derived film, which exhibited less consolidation, was a chemical gel that could not be redissolved in the parent solvent. Films prepared with large acac/metal ratios and small water additions exhibited minimal crosslinking at 25°C, displayed the greatest consolidation ((approximately)86% shrinkage) and the highest refractive index (n = 2.071) when heat treated. These results indicate the importance that M-O-M bonds (crosslinks) formed at low temperature can have on densification behavior. We also report on the effects of heat-treatment schedules and ramp rates on densification behavior. All of the films of the present study crystallized into the cubic phase, at temperatures ranging from (approximately)400°C to greater than 700°C, depending on the heating rate.
Author: Les Vickers
Publisher: Springer
ISBN: 9812873112
Category : Technology & Engineering
Languages : en
Pages : 135
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Book Description
The book covers the topic of geopolymers, in particular it highlights the relationship between structural differences as a result of variations during the geopolymer synthesis and its physical and chemical properties. In particular, the book describes the optimization of the thermal properties of geopolymers by adding micro-structural modifiers such as fibres and/or fillers into the geopolymer matrix. The range of fibres and fillers used in geopolymers, their impact on the microstructure and thermal properties is described in great detail. The book content will appeal to researchers, scientists, or engineers who are interested in geopolymer science and technology and its industrial applications.
Author: Young-Min Kwon
Publisher:
ISBN:
Category : Colloids
Languages : en
Pages : 350
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Book Description
Author:
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 2676
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Book Description
