Durable TBCs with self-enhanced thermal insulation based on co-design on macro- and microstructure

Li, Chang-Jiu; Wang, Li-Shuang

doi:10.1016/j.apsusc.2019.03.309

Cited by 61 publications

(15 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The complete TBCs system mainly consists of three components: ceramic top‐coating, bond coating, and super‐alloy substrate, respectively. Since TBCs need to operate under thermal‐cycling conditions, the difference of TECs can result in thermal stresses between different coatings, and ultimately lead to coatings failure . Typically, bond coating and super‐alloy substrate possess higher TECs (∼14 × 10 −6 k −1 ) than ceramic top‐coating .…”

Section: Resultsmentioning

confidence: 99%

“…Since TBCs need to operate under thermal-cycling conditions, the difference of TECs can result in thermal stresses between different coatings, and ultimately lead to coatings failure. 14,48,49 Typically, bond coating and super-alloy substrate possess higher TECs (∼14 × 10 −6 k −1 ) than ceramic topcoating. 3,50 Therefore, increasing the TECs of the ceramic top-coating can effectively alleviate the thermal stress mismatch between the coatings and effectively extend the service life of the TBCs.…”

Section: Thermal Expansionmentioning

confidence: 99%

See 1 more Smart Citation

The thermo‐mechanical properties and ferroelastic phase transition of RENbO₄(RE = Y, La, Nd, Sm, Gd, Dy, Yb) ceramics

Zhou

et al. 2019

J Am Ceram Soc

View full text Add to dashboard Cite

In this work, RENbO4 (RE = Y, La, Nd, Sm, Gd, Dy, Yb) ceramics with low density, low Young's modulus, low thermal conductivity, and high thermal expansion have been systematically investigated, the excellent thermo‐mechanical properties indicate that RENbO4 ceramics possess the potential as the new generation of thermal barrier coatings (TBCs) materials. X‐ray diffraction and Raman spectroscopy phase structure identification reveal that all dense bulk specimens obtained by high‐temperature solid‐state reaction belonged to the monoclinic (m) phase with C12/c1 space group. The ferroelastic domains are detected in the specimens, revealing the ferroelastic transformation between tetragonal (t) and monoclinic (m) phases of RENbO4 ceramics. The Young's modulus and hardness of the RENbO4 ceramics measured by the NanoBlitz 3D nanoindentation method are discussed in details, and the lower Young's modulus (60‐170 GPa) and higher hardness (the maximum value reaches 11.48 GPa) indicating that higher resistance of RENbO4 ceramics to failure and damage. Lower thermal conductivity (1.42‐2.21 W [m k]−1 at 500°C‐900°C) and lower density (5.330‐7.400 g/cm3) than other typical TBCs materials give RENbO4 ceramics the unique advantage of being new TBCs materials. Meanwhile, the thermal expansion coefficients of RENbO4 ceramics reach 9.8‐11.6 × 10−6 k−1 and are comparable or higher than other typical TBCs materials. According to the first‐order derivative of the thermal expansion rate, the temperature of the ferroelastic transformation of RENbO4 ceramics can be observed.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Thermal Expansionmentioning

confidence: 99%

The thermo‐mechanical properties and ferroelastic phase transition of RENbO₄(RE = Y, La, Nd, Sm, Gd, Dy, Yb) ceramics

Zhou

et al. 2019

J Am Ceram Soc

View full text Add to dashboard Cite

show abstract

“…Specifically for nano-multilayer, the thickness of a single layer coating is less than 100 nm. The soft and hard alternating structure and high-density interface of the nano-multilayer coatings are widely considered to be advantages of improving the strength and toughness for its ability to block dislocation movement and inhibit crack growth [52,53]. It is a hot spot for international research in recent years.…”

Section: Design Of Anti-erosion Coating Materials and Structurementioning

confidence: 99%

“…Interface science is an interdisciplinary branch of learning, involving mechanical, physical, material, and so on, which is being paid more and more attention in recent years. Research on interface science is essential and very important to coating technology [52,53,70,71]. Erosion resistant coatings are generally parallel to the surface of the material.…”

Section: Interface Problemmentioning

confidence: 99%

Key Problems Affecting the Anti-Erosion Coating Performance of Aero-Engine Compressor: A Review

Sun

Jiao

et al. 2019

Coatings

View full text Add to dashboard Cite

Sand erosion has always been a key threat to the performance and service life of aero-engines. The compressor, the key component installed at the front of the aero-engine, suffers the most from sand erosion, especially compressors serving in deserts. Ceramic hard coating is a traditional way to improve the hardness and wear resistance of cutting and grinding tools. It may also be used to improve the erosion resistance of aero- engine compressor. However, the mechanism of erosion damage is complicated, which may include wear, secondary erosion, anisotropic erosion, impact, and fatigue. Recent research discovered the major problems with ceramic hard coating on aero-engine compressors. In this paper, these following problems are discussed: the design of coating material and structure, the preparation method and technology, the effects of droplets and clusters of coating surface, microstructure and characteristics of interface. The review of the major problems and possible solutions discussed in this paper may contribute to the future research on erosion coating theoretically and practically.

show abstract

“…Hypereutectic Al-Si alloys are used extensively in many elds, such as automobiles, electronic packaging and military applications, due to their low mass, high corrosion resistance, high thermal conductivity (TC) and outstanding mechanical performance. [1][2][3][4] In the vehicle eld, as piston materials, hypereutectic Al-Si-Cu alloys are required to have a high TC and excellent mechanical properties. Primary Si, an important phase that consists of hypereutectic Al-Si-Cu alloys, exerts a signicant inuence on the properties of the alloy.…”

Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductivity and tensile strength of Al–17Si–3.5Cu with SiC-nanoparticle addition

Jiang

2019

RSC Adv.

View full text Add to dashboard Cite

show abstract

Durable TBCs with self-enhanced thermal insulation based on co-design on macro- and microstructure

Cited by 61 publications

References 65 publications

The thermo‐mechanical properties and ferroelastic phase transition of RENbO₄(RE = Y, La, Nd, Sm, Gd, Dy, Yb) ceramics

The thermo‐mechanical properties and ferroelastic phase transition of RENbO₄(RE = Y, La, Nd, Sm, Gd, Dy, Yb) ceramics

Key Problems Affecting the Anti-Erosion Coating Performance of Aero-Engine Compressor: A Review

Enhanced thermal conductivity and tensile strength of Al–17Si–3.5Cu with SiC-nanoparticle addition

Contact Info

Product

Resources

About

Durable TBCs with self-enhanced thermal insulation based on co-design on macro- and microstructure

Cited by 61 publications

References 65 publications

The thermo‐mechanical properties and ferroelastic phase transition of RENbO4(RE = Y, La, Nd, Sm, Gd, Dy, Yb) ceramics

The thermo‐mechanical properties and ferroelastic phase transition of RENbO4(RE = Y, La, Nd, Sm, Gd, Dy, Yb) ceramics

Key Problems Affecting the Anti-Erosion Coating Performance of Aero-Engine Compressor: A Review

Enhanced thermal conductivity and tensile strength of Al–17Si–3.5Cu with SiC-nanoparticle addition

Contact Info

Product

Resources

About

The thermo‐mechanical properties and ferroelastic phase transition of RENbO₄(RE = Y, La, Nd, Sm, Gd, Dy, Yb) ceramics

The thermo‐mechanical properties and ferroelastic phase transition of RENbO₄(RE = Y, La, Nd, Sm, Gd, Dy, Yb) ceramics