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Metallurgy and Ceramics/Superplasticity in Metals and Ceramics

Description: In the past three years, we have carried out a number of studies on the deformation and superplasticity of fine-structured materials. The goal was to develop an understanding on the deformation microstructure relationship in these advanced materials and to improve further their properties through microstructural control. In this report, we describe only some of the key results and observations from these studies.
Date: February 6, 2002
Creator: Nieh, T G
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[Ceramics Workshop]

Description: Photograph of a ceramics workshop in China. A row of pitchers are visible on a table in the foreground. A woman sits behind the table painting one of the pitchers. Other tables and workers are visible behind her.
Date: unknown
Creator: Gough, Ray
Item Type: Refine your search to only Photograph
Partner: UNT College of Visual Arts + Design

[Ceramics Factory]

Description: Photograph of a Chinese ceramics factory. In the foreground, vases and dishes are laid out on wooden racks. Terracotta vessels are piled up in woven baskets in the center. Two people stand in front of a kiln in back. More racks are visible in the background.
Date: unknown
Creator: Gough, Ray
Item Type: Refine your search to only Photograph
Partner: UNT College of Visual Arts + Design
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Ceramics for fusion applications

Description: Ceramics are required for a variety of uses in both near-term fusion devices and in commercial powerplants. These materials must retain adequate structural and electrical properties under conditions of neutron, particle, and ionizing irradiation; thermal and applied stresses; and physical and chemical sputtering. Ceramics such as Al/sub 2/O/sub 3/, MgAl/sub 2/O/sub 4/, BeO, Si/sub 3/N/sub 4/ and SiC are currently under study for fusion applications, and results to date show widely-varying respo… more
Date: January 1, 1986
Creator: Clinard, F.W. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Microwave processing of ceramics

Description: This paper discusses the following topics on microwave processing of ceramics: Microwave-material interactions; anticipated advantage of microwave sintering; ceramic sintering; and ceramic joining. 24 refs., 4 figs. (LSP)
Date: January 1, 1989
Creator: Katz, J.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Microwave processing of ceramics

Description: Recent work in the areas of microwave processing and joining of ceramics is briefly reviewed. Advantages and disadvantages of microwave processing as well as some of the current issues in the field are discussed. Current state and potential for future commercialization of this technology is also addressed.
Date: April 1, 1993
Creator: Katz, J. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Forming of superplastic ceramics

Description: Superplasticity in ceramics has now advanced to the stage that technologically viable superplastic deformation processing can be performed. In this paper, examples of superplastic forming and diffusion bonding of ceramic components are given. Recent work in biaxial gas-pressure forming of several ceramics is provided. These include yttria-stabilized, tetragonal zirconia (YTZP), a 20% alumina/YTZP composite, and silicon. In addition, the concurrent superplastic forming and diffusion bonding of a… more
Date: May 1, 1994
Creator: Lesuer, D. R.; Wadsworth, J. & Nieh, T. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ceramics for fusion devices

Description: Ceramics are required for a number of applications in fusion devices, among the most critical of which are magnetic coil insulators, windows for RF heating systems, and structural uses. Radiation effects dominate consideration of candidate materials, although good pre-irradiation properties are a requisite. Materials and components can be optimized by careful control of chemical and microstructural content, and application of brittle material design and testing techniques. Future directions for… more
Date: January 1, 1984
Creator: Clinard, F. W. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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HVEM in ceramics research

Description: Some research programs already under way with magnetic materials such as ferrites, and refractory ceramics like Si/sub 3/N/sub 4/ and its complex derivatives the ''Sialons'' are described. (GHT)
Date: October 1, 1977
Creator: Thomas, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Microwave processing of ceramics

Description: Recent work in the areas of microwave processing and joining of ceramics is briefly reviewed. Advantages and disadvantages of microwave processing as well as some of the current issues in the field are discussed. Current state and potential for future commercialization of this technology is also addressed.
Date: January 1, 1993
Creator: Katz, J.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Erosion of composite ceramics

Description: The theoretical basis to describe solid-particle erosion of monolithic ceramics is well developed. In many cases, the models can account for the impact velocity, impact angle and erodent-size dependencies of the steady-state erosion rate. In addition, the models account for effects of materials parameters such as fracture toughness and hardness. Steady-state erosion measurements on a wide variety of composite ceramics, including SiC whisker-reinforced Al[sub 2]O[sub 3], Si[sub 3]N[sub 4] contai… more
Date: August 1, 1992
Creator: Routbort, J.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Erosion of Composite Ceramics

Description: The theoretical basis to describe solid-particle erosion of monolithic ceramics is well developed. In many cases, the models can account for the impact velocity, impact angle and erodent-size dependencies of the steady-state erosion rate. In addition, the models account for effects of materials parameters such as fracture toughness and hardness. Steady-state erosion measurements on a wide variety of composite ceramics, including SiC whisker-reinforced Al{sub 2}O{sub 3}, Si{sub 3}N{sub 4} contai… more
Date: August 1992
Creator: Routbort, J. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Transformation Toughening in Ceramics

Description: The origin of transformation toughening in ceramics is examined using two separate approaches: one based on the stress field ahead of the crack and the other on the changes in thermodynamic potential during a crack increment. Both approaches yield essentially similar predictions of trends in toughness with particle size, temperature, composition, etc. The stress intensity analysis provides fully quantitative predictions of the toughness. These indicate that the shielding of the crack by the tra… more
Date: December 1, 1980
Creator: Evans, A. G.; Marshall, D. B. & Burlingame, N. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Ceramics]

Description: Video footage from the WBAP-TV station in Fort Worth, Texas to accompany a news story about the Southwest Ceramics and Hobby Show at Fair Park in Dallas, with a large collection of ceramic artwork on display.
Date: April 21, 1955
Duration: 1 minute 10 seconds
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
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Creep in electronic ceramics

Description: High-temperature creep measurements combined with microstructural investigations can be used to elucidate deformation mechanisms that can be related to the diffusion kinetics and defect chemistry of the minority species. This paper will review the theoretical basis for this correlation and illustrate it with examples from some important electronic ceramics having a perovskite structure. Recent results on BaTiO{sub 3}, (La{sub 1{minus}x}Sr){sub 1{minus}y}MnO{sub 3+{delta}}, YBa{sub 2}Cu{sub 3}O{… more
Date: April 27, 2000
Creator: Routbort, J. L.; Goretta, K. C. & Arellano-Lopez, A. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Ceramics]

Description: Video footage from the WBAP-TV station in Fort Worth, Texas to accompany a news story about the Botanic Gardens in Fort Worth hosting the Ceramic Art Guild's sixth annual show.
Date: October 23, 1958
Duration: 1 minute 40 seconds
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Strong, Tough Ceramics Containing Microscopic Reinforcements: Tailoring In-Situ Reinforced Silicon Nitride Ceramics

Description: Ceramics with their hardness, chemical stability, and refractoriness could be used to design more efficient energy generation and conversion systems as well as numerous other applications. However, we have needed to develop a fundamental understanding of how to tailor ceramics to improve their performance, especially to overcome their brittle nature. One of the advances in this respect was the incorporation of very strong microscopic rod-like reinforcements in the form of whiskers that serve to… more
Date: June 27, 1999
Creator: Becher, P.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

BRAZING OF CERAMICS. Progress Report

Description: Brazing alloys such as 48 Ti-48 Zr-4 Be (wt%) and 49 Ti-49 Cu-2 Be (wt%) have been found to readily flow on oxide and graphite ceramics. Two demonstrati on fuel element assemblies were fabricated to illustrate the usefulness of these procedures for nuclear applications. One of these assemblies contained graphite tubes and end caps which were brazed to a molybdenum hanger. The second demonstration fuel element was composed of a compartmented aluminum oxide plate to which aluminum oxide cover pla… more
Date: November 1, 1962
Creator: Fox, C.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Irradiation experiment for lithium ceramics

Description: Solid breeder materials are required in D-T fusion reactor blankets to convert fusion neutrons to tritium and thermal energy while providing some neutron shielding for the magnets. Lithium compounds such as Li/sub 2/O, LiAlO/sub 2/, Li/sub 4/SiO/sub 4/ and Li/sub 2/ZrO/sub 3/ have been proposed as solid breeder materials. Tritium is necessary to maintain the fuel supply for the D-T fusion reaction. No high burnup irradiation performance data is available for these materials in a neutron environ… more
Date: March 1, 1982
Creator: Hollenberg, G.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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