High temperature and high strength Y2Zr2O7 flexible fibrous membrane for efficient heat insulation and acoustic absorption

Xie, Yongshuai; Wang, Lin; Peng, Ying; Mao, Dehua; Zhu, Luyi; Zhang, Guanghui; Wang, Xinqiang

doi:10.1016/j.cej.2021.128994

Cited by 55 publications

(29 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High-performance, lightweight, and flexible materials that can meet the high-temperature requirements have been recently proposed. For example, fabrication of 44 mg/m 3 [26] and even 27.34 mg/m 3 [27] have been reported, with the possibility of peeling transparent single-layers fibrous membranes. The extremely low density is achieved by electro-spinning, which allows to obtain a very high porosity of the substrate membrane.…”

Section: Discussion and Fabrication Challengesmentioning

confidence: 99%

Directed Energy Accelerated Lightsails

Santi¹,

Favaro²,

Corso³

et al. 2021

Preprint

View full text Add to dashboard Cite

A lightsail accelerated via directed energy is a candidate technology to send a probe into the deep space in a time period compatible with human life. The light emitted by a ground-based large-aperture phased laser array is directed onto the lightsail to produce a thrust by transferring the momentum of the incident photons. To achieve high efficiency propulsion, the lightsail must be characterized by extremely low mass, high reflectance and minimal absorption in the Doppler-shifted laser wavelength range, while high emissivity in the infrared is required for thermal management. Optimized multilayer structures allow ultralight spacecraft being accelerated by laser radiation pressure up to 20% of the light velocity, and eventually even above, as long as a compromise between efficiency and weight is achieved. Key aspect is the ability to survive to the temperature increase during the acceleration phase, which can be fateful for the system.

show abstract

Section: Discussion and Fabrication Challengesmentioning

confidence: 99%

Directed Energy Accelerated Lightsails

Santi¹,

Favaro²,

Corso³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Solution spinning method is a two-step process, in which nano building blocks (e.g., nanofibers, nanospheres) are first produced by solution blown spinning technique (such as electrospinning), [85][86][87][88][89][90][91][92][93][94][95][96] then the nano building blocks are used to construction a porous network in solvent, as illustrated in Fig. 3c.…”

Section: Solution Spinning Methodsmentioning

confidence: 99%

“…In addition to single-component aerogels, various composite aerogels that combined with different oxide components and structures have also been extensively studied, which endows aerogels with excellent thermal properties. [88] Oxide composite aerogels is aimed at improving the comprehensive performance of the target aerogels, which can realize the structure and performance regulation. For instance, various oxide composite aerogels with both superior mechanical and thermal properties have been reported, such as silica-based [158] and alumina-based composite aerogels.…”

Section: Other Aerogelsmentioning

confidence: 99%

Design, Synthesis, and Use of High Temperature Resistant Aerogels Exceeding 800 oC

Hu¹,

Liu²,

Zhao³

et al. 2021

ES Mater. Manuf.

View full text Add to dashboard Cite

As a type of ultra-light and super thermal insulation solid state porous materials, aerogels have attracted increasing attention for aerospace, transportation, and building insulation applications. However, when aerogels are applied in these fields, resistance to high temperature is a prerequisite for them. The most traditional silica aerogels can resist up to 600 ℃, but their porous structures are destroyed at higher temperatures and no longer possess the excellent thermal insulation capacity and low density. Though a great number of new aerogels have been reported in the past two decades, the number of aerogels that could resist to ultra-high temperature, e.g. >800 ℃, is relative few. Nevertheless, it's exciting to see that more and more aerogels that can resist to temperatures higher than 1000 ℃, and even up to 1500 ℃, have been reported in the past few years. This paper gives an overview of aerogels that could resist to more than 800 ℃, and they defined as high temperature resistant aerogels (HTRAs) in this review. The synthetic strategies, mechanisms, chemical compositions, and specific applications of the HTRAs will be reviewed and discussed. This paper would be a timely review to summarized the most recent progress in the HTRAs, and provide insights into the designing of various HTRAs.

show abstract

“…On the other hand, yttrium compounds such as Y 2 Ti 2 O 7 , Y 2 Zr 2 O 7 , Y 2 Hf 2 O 7 , YTaO 4, and YNbO 4 have been reported as candidates of TBC materials in the literature due to low thermal conductivities and excellent high-temperature properties. [29][30][31][32][33][34][35] The crystal structures of these compounds are different. Y 2 TiO 7 has a cubic pyrochlore structure, while Y 2 Zr 2 O 7 and Y 2 Hf 2 O 7 have the cubic defect fluorite structure.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, yttrium compounds such as Y 2 Ti 2 O 7 , Y 2 Zr 2 O 7 , Y 2 Hf 2 O 7 , YTaO 4, and YNbO 4 have been reported as candidates of TBC materials in the literature due to low thermal conductivities and excellent high‐temperature properties 29–35 . The crystal structures of these compounds are different.…”

Section: Introductionmentioning

confidence: 99%

High‐entropy yttrium pyrochlore ceramics with glass‐like thermal conductivity for thermal barrier coating application

et al. 2022

View full text Add to dashboard Cite

A 2 B 2 O 7 -type oxides with low thermal conductivities are potential candidates for next-generation thermal barrier coatings. The formation of high-entropy ceramics is considered as a newly effective way to further lower their thermal conductivities. High-entropy Y 2 (Ti 0.2 Zr 0.2 Hf 0.2 Nb 0.2 Ta 0.2 ) 2 O 7 (5HEO) and Y 2 (Ti 0.25 Zr 0.25 Hf 0.25 Ta 0.25 ) 2 O 7 (4HEO) ceramics were prepared by in situ solid reaction sintering, considering the important roles of B-site cations on thermal conductivities of the A 2 B 2 O 7 -type oxides. Reaction process, phase structures, microstructures, and thermal conductivities of the as-sintered ceramics were investigated. Lattice distortion effects on their thermal conductivities were also discussed by using the proposed criterion based on the supercell volume difference of the individual compounds. Near fully-dense 5HEO and 4HEO ceramics were obtained after being sintered at 1600 • C. The former one had a dual-phase structure containing high-entropy Y 2 (Ti 0.227 Zr 0.227 Hf 0.227 Nb 0.136 Ta 0.182 ) 2 O 7.318 pyrochlore oxide (5HEO-P) and Y(Nb, Ta)O 4 solid solution, while the latter one was a single-phase pyrochlore oxide (4HEO-P) with homogeneous element distribution. The formed 5HEO-P oxide has larger lattice distortion than 4HEO-P oxide due to the larger total amounts of Nb and Ta cations at B sites in the 5HEO-P oxide. It results in lower thermal conductivity of 5HEO ceramics (keeping at 1.8 W⋅m -1 ⋅K -1 ) than those of 4HEO ceramics (ranging from 1.8 to 2.5 W⋅m -1 ⋅K -1 ) at temperatures from 25 • C to 1400 • C. Their glass-like thermal conductivities were determined by the selection of B site cations and high-entropy effects. These results provide some useful information for the material design of novel thermal barrier coating materials.

show abstract

High temperature and high strength Y2Zr2O7 flexible fibrous membrane for efficient heat insulation and acoustic absorption

Cited by 55 publications

References 58 publications

Directed Energy Accelerated Lightsails

Directed Energy Accelerated Lightsails

Design, Synthesis, and Use of High Temperature Resistant Aerogels Exceeding 800 oC

High‐entropy yttrium pyrochlore ceramics with glass‐like thermal conductivity for thermal barrier coating application

Contact Info

Product

Resources

About