Results 1 to 10 of about 167 (149)

A novel hollow alumina sphere-based ceramic bonded by in situ mullite whisker framework

Materials and Design, 2020
In this study, a novel hollow alumina sphere-based ceramic enhanced by in situ mullite whisker framework was recommended. Hollow alumina spheres selected as the main pore-forming agent were bonded together by an active mullite powder at high temperature.
Xiaofang Zhang, Xudong Luo, Zijun Peng   +2 more
exaly   +3 more sources

A three-dimensional mullite-whisker network ceramic with ultra-light weight and high-strength prepared by the foam-gelcasting method

Journal of Asian Ceramic Societies, 2020
A three-dimensional mullite-whiskers network ceramic with ultra-light weight and high-strength was obtained by the foaming gel-casting method with active mulllite powders and NH4F.
Xiaofang Zhang, Zijun Peng
exaly   +2 more sources

Preparation of porous mullite ceramics composed entirely of overlapping and interlocking mullite whiskers through whisker in-situ growth

Journal of Advanced Ceramics
A novel porous mullite ceramic with overlapping and interlocking mullite whiskers was prepared using in-situ whisker growth technology. Without the use of any pore-foaming agents, the formation of a porous structure was facilitated by the atomic ...
Ruoyu Zhang, Jingjing Li, Ziqing Wang, Chenchen Qi, Jing Zhuo, Yange Wan, Yajie Zhang, Hongli Liu, Bo Xiao, Mingchao Wang   +9 more
doaj   +2 more sources

Preparation and strengthening mechanisms of in-situ HF catalyzed highly porous mullite with whisker frame structure

Xibei Gongye Daxue Xuebao, 2021
Using HF as catalyst and based on sol-gel chemical precursor powder molding and sintering process, porous mullite with whisker frame structure was in-situ synthesized in the blank body.

doaj   +1 more source

Corrosion behavior and failure mechanism of SiC whisker and c-AlPO4 particle-modified novel tri-layer Yb2Si2O7/mullite/SiC coating in burner rig tests

Journal of Advanced Ceramics, 2022
The corrosion behavior of environmental barrier coatings (EBCs) directly affects the service life and stability of ceramic matrix composite (CMC) structural parts in the aero-engines. The silicon carbide (SiC) whisker toughening phase and c-AlPO4 bonding
Pengju Chen, Peng Xiao, Xian Tang, Yang Li   +3 more
doaj   +1 more source

Structure and composition characterization of submicronic mullite whiskers [PDF]

Journal of Materials Research, 1991
Two sets of submicronic mullite whiskers, which have potential applications for fiber reinforced composites or as a thermal insulator, have been characterized to be tetragonal or orthorhombic using x-ray and electron microscopy techniques. The whiskers decompose upon heating under vacuum with a continuous loss of silicon and reduction in oxygen content
Merk, N., Thomas, G.
openaire   +2 more sources

Filtering performance of ceramic filter with mullite whisker for non-exhaust particulate matter from transportation

Journal of Materials Research and Technology, 2023
Fabrication and filtering performance of ceramic filter were investigated to reduce non-exhaust particulate matter (PM) from vehicles. For this purpose, filter needs to be porous structure with high mechanical strength, thus it can be operated with low ...
Cheol Shin, Do-Kyeong Lee, Seung-Hwa Oh, Jung-Hun Choi, Kwang-Taek Hwang, Kyu-Sung Han, Jin-Ho Kim   +6 more
doaj   +1 more source

Molten salt synthesis of mullite whiskers entirely derived from fly ash for electronic packaging toughening ceramic applications

Journal of Materials Research and Technology, 2022
Preparation of mullite from high-alumina coal fly ash (CFA) has become one of the most important ways for high-value utilization. However, low Al2O3/SiO2 ratio, poor reaction activity and various impurities in fly ash led to poor quality of mullite ...
Jian-ming Gao, Bo Wang, Zongyuan Du, Yanxia Guo, Fangqin Cheng   +4 more
doaj   +1 more source

In situ mullite whisker network formation for high strength and lightweight ceramic proppants [PDF]

Processing and Application of Ceramics
In this study, a facile in situ sintering method has been proposed for fabricating high strength lightweight mullite whisker network reinforced proppants. The effect of TiO2 on the microstructure, properties and fracture behaviours of the mullite whisker
Chen Xudong, Li Saisai, Shang Yudong, Wang Jun, Zheng Jiaojiao   +4 more
doaj   +1 more source

Crucial effect of SiC particles on in situ synthesized mullite whisker reinforced Al2O3-SiC composite during microwave sintering

Processing and Application of Ceramics, 2017
Mullite whisker reinforced Al2O3-SiC composites were in situ synthesized by microwave sintering at 1500°C for 30min. The influence of SiC particle size on heating process and properties of Al2O3-SiC composite were investigated. The XRD and SEM techniques
Meng Wei, Rui Zhang, Keke Guan, Bingbing Fan, Weimin Long, Jia Ma, Hongsong Zhang   +6 more
doaj   +1 more source