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About 10,000 papers for “ceramic processing”

CERAMIC PROCESSING.

Defense Technical Information Center (DTIC) · 1968

Earlier studies by the Materials Advisory Board, in 1961 and 1963, emphasized that a detailed examination of ceramic processing was a necessary step toward obtaining reliable high-integrity ceramic materials with superior properties. In 1964, at the instigation of the Navy Bureau of Weapons, the Department of Defense requested the Materials Advisory Board to initiate such an examination. During the course of this study, the committee making the study provided guidance and stimulation for a relevant research-and-development effort among the military services. This report discusses and summarizes the conclusions and recommendations of the study committee and emphasizes the work yet to be done to produce ceramic materials with the characteristics required for use in structures and, to a degree, electrical and electronic applications. (Author)

Cited by 0

Ceramic Processing

Ewsuk, Kevin G.; Tandon, Rajan; Chambers, Robert S.; Stavig, Mark E. · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2014

Ceramics represent a unique class of materials that are distinguished from common metals and plastics by their: (1) high hardness, stiffness, and good wear properties (i.e., abrasion resistance); (2) ability to withstand high temperatures (i.e., refractoriness); (3) chemical durability; and (4) electrical properties that allow them to be electrical insulators, semiconductors, or ionic conductors. Ceramics can be broken down into two general categories, traditional and advanced ceramics. Traditional ceramics include common household products such as clay pots, tiles, pipe, and bricks, porcelain china, sinks, and electrical insulators, and thermally insulating refractory bricks for ovens and fireplaces. Advanced ceramics, also referred to as ''high-tech'' ceramics, include products such as spark plug bodies, piston rings, catalyst supports, and water pump seals for automobiles, thermally insulating tiles for the space shuttle, sodium vapor lamp tubes in streetlights, and the capacitors, resistors, transducers, and varistors in the solid-state electronics we use daily. The major differences between traditional and advanced ceramics are in the processing tolerances and cost. Traditional ceramics are manufactured with inexpensive raw materials, are relatively tolerant of minor process deviations, and are relatively inexpensive. Advanced ceramics are typically made with more refined raw materials and processing to optimize a given property or combination of properties (e.g., mechanical, electrical, dielectric, optical, thermal, physical, and/or magnetic) for a given application. Advanced ceramics generally have improved performance and reliability over traditional ceramics, but are typically more expensive. Additionally, advanced ceramics are typically more sensitive to the chemical and physical defects present in the starting raw materials, or those that are introduced during manufacturing.

Cited by 0Open access

Ceramic Processing

EWSUK,KEVIN G. · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2014

Ceramics represent a unique class of materials that are distinguished from common metals and plastics by their: (1) high hardness, stiffness, and good wear properties (i.e., abrasion resistance); (2) ability to withstand high temperatures (i.e., refractoriness); (3) chemical durability; and (4) electrical properties that allow them to be electrical insulators, semiconductors, or ionic conductors. Ceramics can be broken down into two general categories, traditional and advanced ceramics. Traditional ceramics include common household products such as clay pots, tiles, pipe, and bricks, porcelain china, sinks, and electrical insulators, and thermally insulating refractory bricks for ovens and fireplaces. Advanced ceramics, also referred to as ''high-tech'' ceramics, include products such as spark plug bodies, piston rings, catalyst supports, and water pump seals for automobiles, thermally insulating tiles for the space shuttle, sodium vapor lamp tubes in streetlights, and the capacitors, resistors, transducers, and varistors in the solid-state electronics we use daily. The major differences between traditional and advanced ceramics are in the processing tolerances and cost. Traditional ceramics are manufactured with inexpensive raw materials, are relatively tolerant of minor process deviations, and are relatively inexpensive. Advanced ceramics are typically made with more refined raw materials and processing to optimize a given property or combination of properties (e.g., mechanical, electrical, dielectric, optical, thermal, physical, and/or magnetic) for a given application. Advanced ceramics generally have improved performance and reliability over traditional ceramics, but are typically more expensive. Additionally, advanced ceramics are typically more sensitive to the chemical and physical defects present in the starting raw materials, or those that are introduced during manufacturing.

Cited by 0Open access

Ceramic Processing

National Research Council · National Academies Press eBooks · 1968

Cited by 0

Ceramic Processing

Ewsuk, Kevin G. · University of North Texas Digital Library (University of North Texas) · 1999

Ceramics represent a unique class of materials that are distinguished from common metals and plastics by their: (1) high hardness, stiffness, and good wear properties (i.e., abrasion resistance); (2) ability to withstand high temperatures (i.e., refractoriness); (3) chemical durability; and (4) electrical properties that allow them to be electrical insulators, semiconductors, or ionic conductors. Ceramics can be broken down into two general categories, traditional and advanced ceramics. Traditional ceramics include common household products such as clay pots, tiles, pipe, and bricks, porcelain china, sinks, and electrical insulators, and thermally insulating refractory bricks for ovens and fireplaces. Advanced ceramics, also referred to as ''high-tech'' ceramics, include products such as spark plug bodies, piston rings, catalyst supports, and water pump seals for automobiles, thermally insulating tiles for the space shuttle, sodium vapor lamp tubes in streetlights, and the capacitors, resistors, transducers, and varistors in the solid-state electronics we use daily. The major differences between traditional and advanced ceramics are in the processing tolerances and cost. Traditional ceramics are manufactured with inexpensive raw materials, are relatively tolerant of minor process deviations, and are relatively inexpensive. Advanced ceramics are typically made with more refined raw materials and processing to optimize a given property or combination of properties (e.g., mechanical, electrical, dielectric, optical, thermal, physical, and/or magnetic) for a given application. Advanced ceramics generally have improved performance and reliability over traditional ceramics, but are typically more expensive. Additionally, advanced ceramics are typically more sensitive to the chemical and physical defects present in the starting raw materials, or those that are introduced during manufacturing.

Cited by 0Open access

Ceramic Processing

H. P. Buchkremer, N. H. Menzler · JuSER (Forschungszentrum Jülich) · 2007

Cited by 0

(Ceramic powder processing)

Gary M. Crosbie · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 1988

The traveler attended and presented a technical paper at the Second International Powder Processing Conference and participated in the data analysis of the working group meeting of the International Energy Agreement Annex II. Of particular interest were discussions and papers about the status of German projects for Si{sub 3}N{sub 4} powder characteristics for sinterability, tests relating Si{sub 3}N{sub 4} ceramic properties to powder properties, and advances in understanding hardness of agglomerates and dry-pressing theory. These advances in ceramic technology are likely to be bases for improvements in several energy R D activities. In the IEA meeting, the traveler presented a discussion of the X-ray diffraction methods which were used in Ford's contributions to the round robin. 8 refs., 9 figs.

Cited by 4Open access

Multilayer Ceramic Processing

Andrew J. Bell · Birkhäuser Basel eBooks · 1993

Ferroelectric ceramics appear most often in the market place in the form of multilayer components. In this paper, the advantages offered by the multilayer format are highlighted, followed by a review of the methods employed to form ceramic green sheets, particularly that of tape-casting. An attempt is made to define the factors which determine the composition of a tape-casting formulation. In conclusion, examples of how market-oriented issues may influence the future of ferroelectric ceramics development are examined.

Cited by 13

Ceramic Processing Science

Gary L. Messing, Shin‐ichi Hirano, Ludwig J. Gauckler · Journal of the American Ceramic Society · 2006

Cited by 31

Ceramics, Ceramic Processing

Kevin G. Ewsuk · Kirk-Othmer Encyclopedia of Chemical Technology · 2000

Abstract In the manufacture of ceramic components, chemical composition and microstructure are specified to optimize the properties (eg, mechanical, electrical, and magnetic) of the finished product for a given application. Optimum properties are achieved by developing and refining processes to produce a target microstructure, and by controlling processes to minimize the concentration and scale of the defects in the finished part. The tolerance of the finished ceramic to defects determines the degree of control that must be exercised during processing. Ceramic component fabrication involves simultaneously optimizing multiple processes ranging from raw materials beneficiation to post‐sinter machining. To manufacture reliable ceramic components with reproducible properties, process–microstructure–property relationships must be understood and controlled during processing. These relationships can be determined by characterizing the ceramic raw materials, mixes, and the formed ceramic body intermittently during the various stages of processing and after final thermal consolidation. Established relationships between processing, microstructure, and properties can be applied to control manufacturing processes and optimize properties, and to identify and correct process deficiencies when less than optimal properties are obtained.

Cited by 2

STUDIES OF CERAMIC PROCESSING

E. J. Smoke, C. M. Ringel, P. L. Fleischner · 1965

Abstract : The object of this program is to improve the structure of ceramics by processing. The overall temperature range of interest is 1800 F to above 3000 F. In the high portion of the range, 3000 F and above, spinel MgO-Al2O3 is presently under study. The parameters have been established for preparing suitable starting materials. Pure alums which by proper heat treatment result in the formation of ultra fine, pure magnesia and alumina, have been studied along with the formation of spinel. DTA, TGA, X-ray, electron microscopy, etc., have been utilized. Three compositions are of particular interest namely, 0.9Mg0.1. OAl2O3, 1.OMg0.1.OAl2O3 and 1.OMgO.0.9Al2O3. They have been studied as starting materials prereacted over the temperature range 950-1200 C and as bodies made of these prereacted materials and fired over the range 1370-1650 C. The intermediate temperature range 2600-3000 F, was studied utilizing the presintering approach to the prereacted raw materials technique and the results were reported in earlier reports. The low range, 1800-2600 F, was studied using the devitrification approach of the prereacted raw material technique. Cordierite is the crystalline phase of particular interest because of its low thermal expansion. The one-glass and the two-glass approaches have been studied.

Cited by 0

BASIC CERAMIC PROCESSING TECHNIQUES

Richard M. Fulrath · eScholarship (California Digital Library) · 1974

troduction Ceramic processing consists of a series of steps each of ,>.which is important in producing a ceramic material for a given application.~n the technical ceramic field the most .. important applications of ceramics are in the structural, /:.;',::'

Cited by 0Open access