Assessment in Si3N4 of a new method for determining the fracture toughness from a surface notch micro-machined by ultra-short pulsed laser ablation

All of RECERCAT

To access the full text documents, please follow this link: http://hdl.handle.net/2117/26335

Title:	Assessment in Si3N4 of a new method for determining the fracture toughness from a surface notch micro-machined by ultra-short pulsed laser ablation
Author:	Turón Viñas, Miquel; Anglada Gomila, Marc
Other authors:	Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. CIEFMA - Centre d'Integritat Estructural i Fiabilitat dels Materials
Abstract:	The determination of the fracture toughness in a well characterized gas pressure sintered silicon nitride by the single edge V-notch beam method is analyzed in specimens with a surface shallow sharp notch produced by ultra-short pulsed laser ablation. The fracture surfaces and the damage in front of the notch tip are analyzed in detail by using focus ion beam/scanning electron microscopy and micro-Raman spectroscopy. It is concluded that the fracture toughness can be successfully determined by this technique and its importance for nano-grain size ceramics is outlined
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria dels materials -Ceramic materials -Fracture mechanics. -Fracture -Toughness -Ceramics -Nanocomposites -Laser -Materials ceràmics -Materials -- Fatiga
Rights:	Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Published version Article
Published by:	Elsevier
Share: