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091215e19990629dcu s| f1|||||eng|d |
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|a (TOE)ost11174
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|a (TOE)11174
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|a TOE
|c TOE
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|a GDWR
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|a 36
|2 edbsc
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|a E 1.99:ANL/ET/CP-97896
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|a E 1.99:ANL/ET/CP-97896
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|a ANL/ET/CP-97896
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|a Mechanical property characterization of multidirectional Si₃N₄/BN fibrous monoliths.
|h [electronic resource]
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| 260 |
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|a Washington, D.C :
|b United States. Dept. of Energy ;
|a Oak Ridge, Tenn. :
|b distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
|c 1999.
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| 300 |
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|a 13 pages.
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| 336 |
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|a text
|b txt
|2 rdacontent.
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| 337 |
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|a computer
|b c
|2 rdamedia.
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| 338 |
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|a online resource
|b cr
|2 rdacarrier.
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| 500 |
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|a Published through the Information Bridge: DOE Scientific and Technical Information.
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| 500 |
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|a 06/29/1999.
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| 500 |
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|a "ANL/ET/CP-97896"
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|a American Ceramic Society 101st Annual Meeting, Indianapolis, IN (US), 04/25/1999--04/28/1999.
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| 500 |
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|a Tlustochowicz, M.
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| 520 |
3 |
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|a Fibrous monoliths (FMs) of Si₃N₄/BN ({approx}85 vol% Si₃N₄/15 vol% BN) with three different cell architectures (unidirectional, 0{degree}/90{degree}, and {+-}45{degree}) were tested in four-point-bend mode under ambient conditions. The FM constituents (hot-pressed monolithic Si₃N₄ and BN) were also characterized. The unidirectional Si₃N₄/BN FM demonstrated the best properties, with ultimate strength of 476 {+-} 30 MPa and work-of-fracture of 12.6 {+-} 1.9 kJ/m², while Si₃N₄/BN FM with {+-}45{degree} cell architecture had the lowest strength (175 {+-} 13 MPa) and work-of-fracture (2.7 {+-} 1.7 kJ/m². The 0{degree}/90{degree} FM had intermediate values of 379 {+-} 86 MPa and 4.9 {+-} 2.2 kJ/m². High work-of-fracture for the unidirectional Si₃N₄/BN was correlated to toughening mechanisms such as extensive delamination and crack deflection. Predictions for the elastic moduli of the Si₃N₄/BN FMs based on laminate theory correlated well with the observed elastic moduli for the unidirectional and 0{degree}/90{degree} Si₃N₄/BN FMs. However, large discrepancies were observed between predictions and observed values for the {+-}45{degree} Si₃N₄/BN FMs, possibly due to the increasing role of the BN phase on mechanical properties in these FMs. Mechanical properties of monolithic Si₃N₄ and BN compared well with literature values.
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| 536 |
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|b W-31109-ENG-38.
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| 650 |
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7 |
|a Silicon Nitrides.
|2 local.
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| 650 |
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7 |
|a Boron Nitrides.
|2 local.
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| 650 |
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7 |
|a Ceramics.
|2 local.
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| 650 |
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|a Mechanical Properties.
|2 local.
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| 650 |
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|a Ultimate Strength.
|2 local.
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| 650 |
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7 |
|a Composite Materials.
|2 local.
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| 650 |
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|a Crystal Structure.
|2 local.
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| 650 |
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7 |
|a Elasticity.
|2 local.
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| 650 |
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7 |
|a Materials Science.
|2 edbsc.
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| 710 |
2 |
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|a Argonne National Laboratory.
|4 res.
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| 710 |
2 |
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|a United States.
|b Department of Energy.
|4 spn.
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| 710 |
2 |
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|a United States.
|b Department of Energy.
|b Office of Scientific and Technical Information.
|4 dst.
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| 856 |
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|u http://www.osti.gov/servlets/purl/11174-W5I1de/webviewable/
|z Online Access
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| 907 |
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|a .b56199132
|b 03-06-23
|c 12-15-09
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| 998 |
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|a web
|b 12-15-09
|c f
|d m
|e p
|f eng
|g dcu
|h 0
|i 1
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|a Information bridge
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|s c772006c-db3d-5752-a921-affafad45cf9
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| 952 |
f |
f |
|p Can circulate
|a University of Colorado Boulder
|b Online
|c Online
|d Online
|e E 1.99:ANL/ET/CP-97896
|h Superintendent of Documents classification
|i web
|n 1
|
