| Advanced Processing of Silicon Nitride Ceramics |
92 |
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| Authors:
J. T. Neil; S. Natansohn; A. E. Pasto; GTE LABS INC WALTHAM MA
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 | The results of a study designed to improve the mechanical strength and reliability of structural silicon nitride components are reported. The objective of study was to eliminate the frequently found metallic inclusions that originate from the abrasive wear that occurs in processing this hard material in metallic equipment and which adversely affects the material properties. The feasibility of replacing metals with polymeric materials in equipment where substantive wear occurs was ... |
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| Ceramic Whisker- and Particulate-Composites: Properties, Reliability, and Applications |
FEB 89 |
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| Authors:
S-t. Buljan; A. E. Pasto; H. J. Kim
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| Major efforts are underway to apply structural ceramics to automotive engines for wear components and turbochargers; in gas turbines as rotary and stationary components, recuperators, and regenerators; and ceramic bearings for both rotary and reciprocating engines. In the United States, military and space applications have made an impact on the intensity of development; however, one of the main driving forces of this research over the years has been government support ... |
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| Silicon Nitride Ceramics for Heat-Engine Applications |
88 |
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| Authors:
W. Koenigsberg; G. Bandyopadhyay; A. E. Pasto; K. W. French; J. T. Neil; GTE LABS INC WALTHAM MA
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| Properties are characterized for three GTE silicon nitride products formed by injection molding. The products are: SNW-1000 (silicon nitride plus 13 yttria and 3 alumina); AY6 (silicon nitride plus 6 yttria and 1.5 alumina); and PY6 (silicon nitride plus 6 yttria) (wt.%). |
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| Silicon Nitride-Cordierite Composites for Diesel Engine Applications |
MAY 84 |
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| Authors:
A. E. Pasto
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| A new family of silicon nitride-based ceramics is being developed for applications in diesel engines. These composite ceramics are characterized by low thermal conductivity, low thermal expansion, high strength, and high oxidation resistance. Properties may be tailored widely by adjusting the cordierite/silicon nitride ratio and/or the crystallinity of the cordierite phase. |
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| Eu(sub 2)O(sub 3): PROPERTIES AND IRRADIATION BEHAVIOR |
AUG 77 |
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| Authors:
A. E. Pasto; M. M. Martin; OAK RIDGE NATIONAL LAB TENN
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| Europium sesquioxide is an excellent candidate control material for fast reactors. Its properties and behavior have been under extensive investigation at ORNL since 1972. This report is a compilation of the results of these efforts. Processes for synthesizing powders and fabricating dense pellets from them are described. Physical and chemical properties data measured on these pellets, along with their irradiation behavior, are also summarized. |
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