Mechanical evaluation of SiC particle reinforced oxynitride glass and glass-ceramic composites

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90087-6· OSTI ID:7037050

Rouxel, T; Lavelle, C ^[1]; Garnier, C; Verdier, P; Laurent, Y ^[2]

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1. CNRS 320, Limoges (France). Lab. de Materiaux Ceramiques et Traitements de Surface
2. Univ. de Rennes 1 (France). Lab. de Chimie des Materiaux

In silicon oxynitride glasses, the nitrogen occupies anion sites and is bonded to three silicons. Hence, replacement of divalent oxygen ions by trivalent nitrogen ones results in a considerable improvement of the mechanical resistance. In this exploratory work, the authors investigate some basic mechanical properties at room temperature of composite materials prepared by adding some SiC particles to a highly refractory Y-Mg-Si-Al-O-N oxynitride glass. Taking advantage of both constituents, the brittle particulate composites exhibit much better fracture strength and toughness and higher elastic moduli than the glassy matrix. Due to the easy crystallization of the selected glass, a further improvement is attainable through a crystallization treatment of the matrix. Fracture toughness and Young's modulus as high as 5.4 MPa.m[sup 0.5] and 215 GPa respectively have been measured on the glass-ceramic composite containing 50 vol.% SiC.

• OSTI ID: 7037050
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 31:1; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
CARBIDES
CARBON COMPOUNDS
COMPOSITE MATERIALS
DATA
EXPERIMENTAL DATA
FRACTURE PROPERTIES
GLASS
INFORMATION
MAGNESIUM COMPOUNDS
MATERIALS
MECHANICAL PROPERTIES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXYGEN COMPOUNDS
SILICON CARBIDES
SILICON COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS