Calcia–magnesia–alumina–silicate (CMAS) attack mechanisms and roadmap towards Sandphobic thermal and environmental barrier coatings

A Nieto, R Agrawal, L Bravo… - International …, 2021 - Taylor & Francis
This review critically examines the current understanding of calcia–magnesia–alumina–
silicate (CMAS) degradation mechanisms and mitigation approaches in thermal and …

Experimental and numerical investigation on the thermal and mechanical behaviours of thermal barrier coatings exposed to CMAS corrosion

D Li, P Jiang, R Gao, F Sun, X Jin, X Fan - Journal of Advanced Ceramics, 2021 - Springer
Abstract Calcium-magnesium-alumino-silicate (CMAS) corrosion is a critical factor which
causes the failure of thermal barrier coating (TBC). CMAS attack significantly alters the …

Viscosity of CaO-MgO-Al2O3-SiO2 (CMAS) melts: Experimental measurements and comparison to model calculations

RI Webster, EJ Opila - Journal of Non-Crystalline Solids, 2022 - Elsevier
Aircraft operating temperatures are expected to increase with the implementation of ceramic
matrix composites as hot-section engine materials to replace some traditional nickel-base …

Reaction behaviors and mechanisms of tri-layer Yb2SiO5/Yb2Si2O7/Si environmental barrier coatings with molten calcium-magnesium-alumino-silicate

P Liu, X Zhong, Y Niu, L Huang, H Li, D Fan, Q Li… - Corrosion …, 2022 - Elsevier
The reaction behaviors and corrosion mechanisms of the tri-layer Yb 2 SiO 5/Yb 2 Si 2 O
7/Si EBCs against CMAS melts were explored at 1300–1400° C for 25–50 h. Results …

Tailoring the EB-PVD columnar microstructure to mitigate the infiltration of CMAS in 7YSZ thermal barrier coatings

R Naraparaju, M Hüttermann, U Schulz… - Journal of the European …, 2017 - Elsevier
The CMAS associated degradation of 7YSZ TBC layers is one of the serious problems in the
aero engines that operate in dusty environments. CMAS infiltrates into TBC at high …

Thermochemistry of calcium rare‐earth silicate oxyapatites

G Costa, BJ Harder, NP Bansal… - Journal of the …, 2020 - Wiley Online Library
The calcium rare‐earth (RE) silicate oxyapatite, Ca2RE8 (SiO4) 6O2 (RE= Yb, Er, Y, Dy, Nd,
Gd, and Sm), powders were synthesized by the solid‐state reaction method and …

Roles of composition and temperature in silicate deposit-induced recession of yttrium disilicate

WD Summers, DL Poerschke, D Park, JH Shaw… - Acta Materialia, 2018 - Elsevier
Reactions between silicate deposits and environmental barrier coatings (EBCs) for SiC/SiC
composites can severely degrade coating performance. The goal of the present study is to …

Numerical study on effect of non-uniform CMAS penetration on TGO growth and interface stress behavior of APS TBCs

Z Cai, Z Zhang, Y Liu, X Zhao, W Wang - Chinese Journal of Mechanical …, 2021 - Springer
Abstract The penetration of CaO–MgO–Al 2 O 3–SiO 2 (CMAS) is one of the most significant
factors that induce the failure of air-plasma-sprayed thermal barrier coatings (APS TBCs) …

A chemo-thermo-mechanically constitutive theory for thermal barrier coatings under CMAS infiltration and corrosion

GN Xu, L Yang, YC Zhou, ZP Pi, W Zhu - … of the Mechanics and Physics of …, 2019 - Elsevier
High temperature ceramic corroded by calcium-magnesium-alumino-silicates (CMAS)
deposits is an inevitable part of severe degradation of thermal barrier coatings (TBCs) …

Mechanical properties and damage analysis of S-glass: A reactive molecular dynamics study

J Yeon, SC Chowdhury, JW Gillespie Jr - Composites Part B: Engineering, 2022 - Elsevier
Glass fibers are widely used as reinforcements in composites for applications ranging from
lightweight and damage tolerant structures to protective materials providing high levels of …