Skirl, Siegfried ; Krause, Ralph ; Wiederhorn, Sheldon M. ; Rödel, Jürgen (2001)
Processing and Mechanical Properties of Al2O3/Ni3Al Composites with Interpenetrating Network Microstructure.
In: Journal of the American Ceramic Society, 84 (9)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Composites with microstructures of interpenetrating networks were manufactured by gas pressure infiltration of Ni3Al into porous preforms of aluminum oxide. Composites with Ni-3,Al contents of between 15% and 30% by volume were made and evaluated mechanically at temperatures between room temperature and 1000 degreesC. The fracture strength, the fracture toughness, Young's modulus, and the thermal expansion coefficient were measured for each composite and test condition and were correlated with the microstructures of the composites. Composites with low Ni3Al contents had strengths below 400 Wa, presumably due to microcracking along the interface between the Ni3Al and the Al2O3. The composite with the highest content of Ni3Al, 30 vol%, had a mean fracture strength of 675 +/- 16 MPa, a Weibull modulus of 23.9, and a room-temperature toughness of 9.2 +/- 0.5 MPa(.)m(1/2).
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2001 |
| Autor(en): | Skirl, Siegfried ; Krause, Ralph ; Wiederhorn, Sheldon M. ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Processing and Mechanical Properties of Al2O3/Ni3Al Composites with Interpenetrating Network Microstructure |
| Sprache: | Englisch |
| Publikationsjahr: | September 2001 |
| Verlag: | AMER CERAMIC SOC, 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 USA |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 84 |
| (Heft-)Nummer: | 9 |
| Kurzbeschreibung (Abstract): | Composites with microstructures of interpenetrating networks were manufactured by gas pressure infiltration of Ni3Al into porous preforms of aluminum oxide. Composites with Ni-3,Al contents of between 15% and 30% by volume were made and evaluated mechanically at temperatures between room temperature and 1000 degreesC. The fracture strength, the fracture toughness, Young's modulus, and the thermal expansion coefficient were measured for each composite and test condition and were correlated with the microstructures of the composites. Composites with low Ni3Al contents had strengths below 400 Wa, presumably due to microcracking along the interface between the Ni3Al and the Al2O3. The composite with the highest content of Ni3Al, 30 vol%, had a mean fracture strength of 675 +/- 16 MPa, a Weibull modulus of 23.9, and a room-temperature toughness of 9.2 +/- 0.5 MPa(.)m(1/2). |
| Freie Schlagworte: | ADVANCED STRUCTURAL CERAMICS; INTERMETALLIC COMPOUNDS; AL2O3/AL COMPOSITES; MELT-INFILTRATION; BEHAVIOR; STRENGTH; FRACTURE; NI3AL; COMMERCIALIZATION; OXIDATION |
| ID-Nummer: | 472BF |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 14 Jul 2011 10:32 |
| Letzte Änderung: | 05 Mär 2013 09:50 |
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