In situ synthesis of three‐dimensional nanofiber‐knitted ceramic foams via reactive sintering silicon foams

Huo, Wenlong; Zhang, Xiaoyan; Xu, Jie; Hu, Zunlan; Yan, Shu

doi:10.1111/jace.16225

Cited by 15 publications

(5 citation statements)

References 31 publications

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“…The self-assembly of powder particles at the air-water interface during the particle-stabilized foaming process greatly weakens the bridging effect between powder particles. [49,50] In addition, the almost no-linear shrinkage of the equiaxed grains constituting the fragments during sintering will further reduce porosity at the grain boundaries. [51,52] Using equiaxed grains as seeds to replace powder particles for hot-pressing sintering not only improves the relative density and flexural strength of bulk ceramics, but also increases the fracture toughness by coarsening to form plate-like grains induced by additives.…”

Section: Resultsmentioning

confidence: 99%

Strong and Tough Alumina Ceramic from the Particle‐Stabilized Foam

et al. 2022

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Strength and toughness are two vital and contradictory properties, especially in alumina structural ceramics. This mutual exclusion limits the widespread application of advanced alumina ceramics in harsh environments. To deal with this issue, self‐toughening alumina bulk ceramics without any ductile phase and with a unique combination of excellent toughness and reliable strength by combining the foam ceramics with hot‐pressing sintering are prepared. Foam ceramics with honeycomb cellular structures are prepared by particle‐stabilized foaming. Then, the foam ceramics is directly hot pressed sintered, in which the cellular structure is fractured into fragments and completely dense under pressure. Equiaxed grains that constituting the fragments grow anisotropically into plate‐like grains with a large diameter–thickness ratio during hot‐pressing sintering. Plate‐like grains improve the material's fracture toughness by exerting a toughening mechanism similar to that of fibers. The self‐toughening alumina ceramics exhibit a unique combination of high flexural strength (874 ± 31 MPa) and high fracture toughness (6.2 ± 0.1 MPa m1/2). The Vickers hardness also can reach 21 GPa. Herein, a new strategy with relatively simple processing to fabricate high‐performance ceramics based on the widespread ceramic processing techniques are provided.

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Section: Resultsmentioning

confidence: 99%

Strong and Tough Alumina Ceramic from the Particle‐Stabilized Foam

et al. 2022

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“…A schematic diagram of its microsphere formation is shown in Figure 5 . Huo [ 53 ] sintered silicon nitride nanofiber knitted ceramic foam by an in situ reaction on the basis of a stable silicon foam. This new silicon carbide ceramic foam consists of a three-dimensional nanofiber assembly network with a diameter of 15–100 nm.…”

Section: Ceramic Nanofibersmentioning

confidence: 99%

Fabrication and Applications of Ceramic-Based Nanofiber Materials Service in High-Temperature Harsh Conditions—A Review

Zhang

Zhang²,

Wang

et al. 2023

Gels

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Ceramic-based nanofiber materials have attracted attention due to their high-temperature resistance, oxidation resistance, chemical stability, and excellent mechanical performance, such as flexibility, tensile, and compression, which endow them with promising application prospects for filtration, water treatment, sound insulation, thermal insulation, etc. According to the above advantages, we, therefore, reviewed the ceramic-based nanofiber materials from the perspectives of components, microstructure, and applications to provide a systematical introduction to ceramic-based nanofiber materials as so-called blankets or aerogels, as well as their applications for thermal insulation, catalysis, and water treatment. We hope that this review will provide some necessary suggestions for further research on ceramic-based nanomaterials.

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“…Moreover, BN exhibits a high thermal conductivity, a desired mechanical property and is electrically insulator, so can be widely used for structural, thermal, electrical, and optical applications. Silicon nitride (Si 3 N 4 ) is another nitride ceramic compound which is widely applied in fiber preparation [91][92][93]. GaN fiber, as an important functional fiber, shows great application potential in semiconductor devices [94].…”

Section: Materials For Preparation Of Fcfsmentioning

confidence: 99%

Flexible Ceramic Fibers: Recent Development in Preparation and Application

Jia

Luo

et al. 2022

Adv. Fiber Mater.

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Flexible ceramic fibers (FCFs) have been developed for various advanced applications due to their superior mechanical flexibility, high temperature resistance, and excellent chemical stability. In this article, we present an overview on the recent progress of FCFs in terms of materials, fabrication methods, and applications. We begin with a brief introduction to FCFs and the materials for preparation of FCFs. After that, various methods for preparation of FCFs are discussed, including centrifugal spinning, electrospinning, solution blow spinning, self-assembly, chemical vapor deposition, atomic layer deposition, and polymer conversion. Recent applications of FCFs in various fields are further illustrated in detail, including thermal insulation, air filtration, water treatment, sound absorption, electromagnetic wave absorption, battery separator, catalytic application, among others. Finally, some perspectives on the future directions and opportunities for the preparation and application of FCFs are highlighted. We envision that this review will provide readers with some meaningful guidance on the preparation of FCFs and inspire them to explore more potential applications.

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In situ synthesis of three‐dimensional nanofiber‐knitted ceramic foams via reactive sintering silicon foams

Cited by 15 publications

References 31 publications

Strong and Tough Alumina Ceramic from the Particle‐Stabilized Foam

Strong and Tough Alumina Ceramic from the Particle‐Stabilized Foam

Fabrication and Applications of Ceramic-Based Nanofiber Materials Service in High-Temperature Harsh Conditions—A Review

Flexible Ceramic Fibers: Recent Development in Preparation and Application

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