Elevated temperature mechanical properties of continuous metallic glass ribbon-reinforced glass-ceramic matrix composites

1991 ◽  
Vol 26 (5) ◽  
pp. 1391-1394 ◽  
Author(s):  
R. U. Vaidya ◽  
K. N. Subramanian
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperature ◽  
Metallic Glass ◽  
Glass Ceramic ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Glass Ribbon ◽  
Matrix Composites ◽  
Metallic Glass Ribbon

Fabrication, microstructure, and mechanical properties of TaC particulate and SiC fiber-reinforced lithia-alumina-silica composites

1995 ◽  
Vol 10 (3) ◽  
pp. 602-608 ◽  
Author(s):  
Hyun-Ho Shin ◽  
Randolph Kirchain ◽  
Robert F. Speyer
Keyword(s):  
Mechanical Properties ◽  
Glass Ceramic ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Particulate Reinforcement ◽  
Sic Fiber ◽  
Reinforced Composite ◽  
Ceramic Route ◽  
Particulate Reinforced

Additions of O to 9 mol % Ta2O5 to a lithia-alumina-silica glass-ceramic matrix Nicalon SiC-reinforced composite increased the elastic modulus and ultimate strength of the composite. The additive fostered sphereulitic growth of β-eucriptite solid solution crystals which concentrated Ta2O5 at sphereulite boundaries and adjacent to the fiber-matrix carbon-rich interphases. These regions reacted with the interphases as well as soluble carbon monoxide gas to convert them to TaC. The former reaction was shown to be thermodynamically favorable above 983 °C, while the latter was favorable above 1249 °C. The improvement in mechanical properties was attributed to TaC particulate reinforcement, and suggests a simple glass-ceramic route to the fabrication of particulate-reinforced ceramic matrix composites.

Effect of Oxidation at Elevated Temperature on Elastic and Interface Properties of Ceramic Matrix Composites

2005 ◽  
Vol 290 ◽  
pp. 340-343
Author(s):  
Johann Brandstetter ◽  
Petr Glogar ◽  
Dieter Loidl ◽  
Karl Kromp
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperature ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Interface Properties ◽  
Matrix Composites ◽  
Elasticity Moduli ◽  
Hot Air

Unidirectionally reinforced ceramic matrix composites (CMC) with matrix derived by pyrolysis of polymethylsiloxane or polymethylphenylsiloxane resins and reinforced with Nicalon or Nextel fibres were investigated. In order to assess and mutually compare their mechanical properties and stability when exposed to hot air up to 1200°C their elasticity moduli were measured prior to and after this exposure. The oxidation - induced damage of the material was monitored also in terms of microstructural features. Moreover, an attempt was undertaken to assess the bonding level by monitoring the push - through of macroscopic bundles of fibres using a flat indentor.

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