Kounga Njiwa, Alain Brice ; Aulbach, Emil ; Rödel, Jürgen ; Neubrand, Achim (2006)
Mechanical Properties of Dry-Pressed Powder Compacts: Case Study on Alumina Nanoparticles.
In: Journal of the American Ceramic Society, 89 (8)
doi: 10.1111/j.1551-2916.2006.01088.x
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Young's modulus and fracture toughness of dry-pressed powder compacts of nanocrystalline alumina powders have been determined for different relative densities and average grain size. The powder with a grain size of 40 nm yielded a maximum Young's modulus of 15 GPa and a peak fracture toughness of 0.12 MPa·m1/2. These high values are rationalized using a model based on contact flattening between particle spheres, which allows a discussion of the influence of grain size and particle packing on the mechanical properties of green bodies.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2006 |
| Autor(en): | Kounga Njiwa, Alain Brice ; Aulbach, Emil ; Rödel, Jürgen ; Neubrand, Achim |
| Art des Eintrags: | Bibliographie |
| Titel: | Mechanical Properties of Dry-Pressed Powder Compacts: Case Study on Alumina Nanoparticles |
| Sprache: | Englisch |
| Publikationsjahr: | August 2006 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 89 |
| (Heft-)Nummer: | 8 |
| DOI: | 10.1111/j.1551-2916.2006.01088.x |
| Kurzbeschreibung (Abstract): | Young's modulus and fracture toughness of dry-pressed powder compacts of nanocrystalline alumina powders have been determined for different relative densities and average grain size. The powder with a grain size of 40 nm yielded a maximum Young's modulus of 15 GPa and a peak fracture toughness of 0.12 MPa·m1/2. These high values are rationalized using a model based on contact flattening between particle spheres, which allows a discussion of the influence of grain size and particle packing on the mechanical properties of green bodies. |
| 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: | 18 Mai 2011 15:20 |
| Letzte Änderung: | 05 Mär 2013 09:47 |
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