Co-enhancement of oxidation resistance and mechanical properties of Cf/LAS composites: The effects of h-BN addition

Crystallization and sintering studies on an anomalous Li2O‐Al2O3‐SiO2 glass for making tunable thermal expansion ceramic

“…Low expansion GCs reinforced with SiC, 16 B 4 C, 17 alumina, 18 carbon fiber, 19 and combination of systems 20 are being investigated for structural applications. Recently, there is research inclination toward processing the glass-alumina composites for structural and functional applications.…”

“…The multivariate curve resolution (MCR) method 19,[26][27][28] decomposes the set of experimental Raman spectra in the spectra of pseudo pure components (called loadings) and relative abundances of these components (called scores). It is essential to emphasize that MCR does not use any data of the system composition.…”

“…The minimization of the system ' s Gibbs energy has to be performed with respect to the molar amount of each system species constrained by the overall system composition to reach the equilibrium system composition. 18,19 The presentday databases of thermodynamic properties comprising the molar Gibbs energies of various species (e.g. the FACT database 20,21 ) enable the routine construction of the Shakhmatkin and Vedishcheva model for many significant multicomponent glass systems.…”

Lithium aluminosilicate (LAS) glass-ceramics: a review of recent progress

“…García-Moreno introduced a hybrid process for making desired LAS precursor wherein TEOS, alumina, kaolinite and Li 2 CO 3 in appropriate ratios were mixed in ethanol medium [195]. Sol-gel route is really advantageous while processing LAS matrix fibre reinforced composites [196][197][198], and it enables easy impregnation of prepreg or fibre tows. This route ensures high purity and homogeneity of the material produced.…”

“…The composite was found to exhibit increased fracture strength and toughness than the C f /LAS composites [238]. Wu et al hot pressed (with 10 MPa at 1350°C for 0.5 h) unidirectional continuous T300 carbon fibre (32–35%) reinforced LAS (1:1:4) ceramic matrix composite with 2 wt-% h-BN addition which was found to exhibit higher mechanical strength ( 910 MPa and K IC 21 MPa m 1/2 ) and enhanced oxidation resistance in 60% porous form [197]. After 1 h oxidation exposure at 600°C, 800°C and 1000°C the 2 wt-% h-BN doped C f /LAS composite demonstrated higher residual strength 47%, 35% and 32%, respectively [197].…”