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Fracture characteristics of rare-earth phosphate and silicate environmental barrier coatings under molten CMAS corrosion [PDF]

Scientific Reports
The fracture characteristics of rare-earth phosphate (LuPO4) and silicate (Lu2SiO5) environmental barrier coating (EBC) materials under molten calcium–magnesium aluminosilicate (CMAS) corrosion are analyzed.
Subrato Sarkar, Rahul Rahul, Bishnu Pada Majee, Keith Bryce, Lucy Zhang, Liping Huang, Jie Lian, Suvranu De   +7 more
doaj   +2 more sources

Mechanical behavior of ytterbium disilicate EBCs investigated by nanoindentation and micro-impact measurements [PDF]

Scientific Reports
Yb₂Si₂O₇ (YbDS) serves as a key environmental barrier coating (EBC) for SiC ceramic matrix composites in gas turbine systems. This study explores the static and dynamic mechanical properties of air plasma spray (APS) deposited YbDS coatings and bulk YbDS
Santosh Thapa, Michael J. Presby, Hailong Chen, Leland C. Hoffman, Jamesa L. Stokes, Yang-Tse Cheng   +5 more
doaj   +2 more sources

Unveiling microsecond diffusion bonding phenomena enabled by air plasma spraying zirconia thermal barrier ceramics onto rare earth environmental barrier silicates [PDF]

Scientific Reports
While global propulsion and energy technology slowly progresses toward cleaner and renewable sources, gas turbine engines are still a workhorse infrastructure in these domains – for which achieving increased operating efficiency and reduced emissions is ...
Edward J. Gildersleeve V, Emine Bakan, Marcin Rasinski, Moritz Kindelmann, Ashok Vayyala, Egbert Wessel, Joachim Mayer, Robert Vaßen   +7 more
doaj   +2 more sources

New Environmental/Thermal Barrier Coatings Suitable for Hydrogen Doped Gas Turbines [PDF]

发电技术
ObjectivesWith the implementation of the national “Dual Carbon Strategy” (carbon peak and carbon neutrality), it is anticipated that the existing coating structures may not meet the requirements of future gas turbine thermal protection coatings.
WANG You, ZHANG Xiaodong, HAO Pei, HAN Xu, DENG Luwei, LI Guoqiang, WEI Fushuang, JI Xiang   +7 more
doaj   +2 more sources

Thermal shock behaviors and mechanisms of ytterbium silicate environmental barrier coatings modified by MoSi2

Journal of Aeronautical Materials, 2023
Rare-earth silicate environmental barrier coatings（EBCs）are important materials for the application in hot end components of new generation high thrust-to-weight ratio aero engines. However, the rare-earth silicate top layer is prone to form longitudinal
LIANG Ruihui, ZHONG Xin, HONG Du, HUANG Liping, WU Yiming, ZHAO Fangxia, NIU Yaran, ZHANG Zhenzhong, ZHENG Xuebin   +8 more
doaj   +1 more source

Densification method of air-plasma-sprayed environmental barrier coatings achieved by pre-heat treatment

Cailiao gongcheng, 2021
High density of the top coat of environmental barrier coatings (EBC) is important for ensuring its performance in water vapor environment, which is also significant for prolonging service lifetime of SiCf/SiC aero-engine hot components.
YANG Bo, LI Guang-rong, XU Tong, YANG Guan-jun   +3 more
doaj   +1 more source

Improving the anti-thermal-shock properties of Sc2O3-Y2O3-ZrO2-CaF2-PHB abradable coatings by fabricating the textures on ceramic matrix composites: experiment verification and numerical analysis

Frontiers in Materials, 2023
The abradable coating is one of the most important coatings for improving the efficiency of aeroengine. To improve the durability of Sc2O3-Y2O3-ZrO2-CaF2-PHB abradable coating under the conditions of high temperature thermal shock, the femtosecond laser ...
Jian-nong Jing, Jian-nong Jing, Le Zhang, Le Zhang, Qi-lian Li, Qi-lian Li, Chun Wang, Chun Wang, Li-hong Dong, Hai-dou Wang, En Lin   +10 more
doaj   +1 more source

Effect of Si/Yb₂Si₂O₇/Yb₂SiO₅ Coatings on Bending Strength of SiC_f/SiC Composite Material at Room Temperature [PDF]

Cailiao Baohu
    Silicon carbide fiber-reinforced silicon carbide matrix (SiCf / SiC) composites exhibit excellent high-temperature mechanical properties and low density compared with traditional metallic superalloys，making them ...
ZHANG Le, ZHENG Hong, ZHANG Weining, LI Jing, CUI Xiangzhong, WANG Yongsheng, LYU Mingda, YANG Bin
doaj   +1 more source

Correlation between d-orbital bandwidth and local coordination environment in RE2SiO5 compounds with implications in minimizing the coefficient of thermal expansion anisotropy (RE = Sc, Y, La)

AIP Advances, 2022
Y2SiO5 is one of the promising environmental barrier coating (EBC) materials that protect the gas turbine engine components from unfavorable reactions at higher temperatures. The Y2SiO5 compound forms in the monoclinic crystal structure (C2/c space group)
Mukil V. Ayyasamy, Prasanna V. Balachandran   +1 more
doaj   +1 more source

Xenotime-type high-entropy (Dy1/7Ho1/7Er1/7Tm1/7Yb1/7Lu1/7Y1/7)PO4: A promising thermal/environmental barrier coating material for SiCf/SiC ceramic matrix composites

Journal of Advanced Ceramics, 2023
Rare-earth phosphates (REPO4) are regarded as one of the promising thermal/environmental barrier coating (T/EBC) materials for SiCf/SiC ceramic matrix composites (SiC-CMCs) owing to their excellent resistance to water vapor and CaO–MgO–Al2O3–SiO2 (CMAS).
Peixiong Zhang, Xingjun Duan, Xiaochang Xie, Donghai Ding, Tao Yang, Xinmei Hou, Yunsong Zhao, Enhui Wang   +7 more
doaj   +1 more source