Sellappan, Pathikumar ; Guin, Jean-Pierre ; Rocherulle, Jean ; Celarie, Fabrice ; Rouxel, Tanguy ; Riedel, Ralf (2013)
Influence of diamond particles content on the critical load for crack initiation and fracture toughness of SiOC glass–diamond composites.
In: Journal of the European Ceramic Society, 33 (4)
doi: 10.1016/j.jeurceramsoc.2012.10.012
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The crack initiation load and fracture toughness were characterized as a function of diamond particle content, up to 25 vol%, in silicon oxycarbide glass matrix by means of Vickers indentation and single edge notch beam (SENB) technique, respectively. The larger fracture toughness value of 3.21 ± 0.3 MPa m1/2 was reached for 20 vol% diamond content composites and the value was 4 times higher than that of the unreinforced glass. The addition of diamond particles greatly influenced the crack initiation load, which increased from 2.9 to 49.0 N. The enhancement in the fracture toughness and crack initiation load can be explained by both the intrinsic mechanical properties of diamond (especially the elastic properties; E ∼ 1100 GPa) and the diamond/SiOC glass interfacial bonding. A clear correlation was found between the fracture energy, the reinforced interparticle spacing and the residual stress arising upon cooling due to thermal expansion mismatch between the matrix and the diamond particles.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2013 |
| Autor(en): | Sellappan, Pathikumar ; Guin, Jean-Pierre ; Rocherulle, Jean ; Celarie, Fabrice ; Rouxel, Tanguy ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Influence of diamond particles content on the critical load for crack initiation and fracture toughness of SiOC glass–diamond composites |
| Sprache: | Englisch |
| Publikationsjahr: | April 2013 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 33 |
| (Heft-)Nummer: | 4 |
| DOI: | 10.1016/j.jeurceramsoc.2012.10.012 |
| Kurzbeschreibung (Abstract): | The crack initiation load and fracture toughness were characterized as a function of diamond particle content, up to 25 vol%, in silicon oxycarbide glass matrix by means of Vickers indentation and single edge notch beam (SENB) technique, respectively. The larger fracture toughness value of 3.21 ± 0.3 MPa m1/2 was reached for 20 vol% diamond content composites and the value was 4 times higher than that of the unreinforced glass. The addition of diamond particles greatly influenced the crack initiation load, which increased from 2.9 to 49.0 N. The enhancement in the fracture toughness and crack initiation load can be explained by both the intrinsic mechanical properties of diamond (especially the elastic properties; E ∼ 1100 GPa) and the diamond/SiOC glass interfacial bonding. A clear correlation was found between the fracture energy, the reinforced interparticle spacing and the residual stress arising upon cooling due to thermal expansion mismatch between the matrix and the diamond particles. |
| Freie Schlagworte: | Polymer derived ceramics, Silicon oxycarbide glass–diamond composites, Fracture toughness, Crack initiation, Surface damage resistance |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 04 Feb 2014 09:26 |
| Letzte Änderung: | 04 Feb 2014 09:26 |
| PPN: | |
| Sponsoren: | P. Sellappan acknowledges the Ministry of Higher Education and Research of France for the fellowship. , Région Bretagne (Brittany, France) is acknowledged for instrumental facilities. , German Research Foundation (DFG, Priority Program 1181), Bonn, Germany, and the Fonds der Chemischen Industrie, Frankfurt, Germany, are acknowledged for financial support. |
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