Article
Materials Science, Ceramics
Xiang Li, Si Li, Yameng Wan, Mengya Tao, Yuan Kong, Lujun Yang, Shishuai Tian, Xinghui Hou, Chengliang Ma
Summary: High-strength porous mullite was successfully prepared using natural lignin fibers as the pore-forming agent via gel-casting. The water transport capacity of the lignin fibers improved the dispersion of the gel system and the flowability of the slurry. By optimizing the lignin fiber content, the flexural strength of the green body was significantly increased. The resulting porous mullite ceramics displayed a homogeneous microstructure with a certain porosity.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Zheng Qin, Xiaojing Xu, Tengfei Xu, Yueqi Cao, Jinyu Wu, Liwen YAn, Feng Hou, Jiachen Liu, Anran Guo
Summary: This study presents a new approach to dramatically improve the strength of fibrous porous ceramics while maintaining low density and thermal conductivity. By using nanoemulsion electrospinning and dry pressing method, high-strength mullite fiber-based ceramics composed of interlocked porous mullite fibers were prepared. The results show that the porous ceramics exhibited a higher compressive strength than solid ceramics due to the denser three-dimensional skeletal structure composed of porous mullite fibers. Moreover, the porous structure in the fibers also contributed to superior high-temperature heat insulation, providing new insights into the development of thermal insulators.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Lei Yuan, Tianpeng Wen, Linyang Jiang, Zhenli Liu, Chen Tian, Jingkun Yu
Summary: The study developed a novel hydrophobic and lipophilic material for oil-water separation using bionic surface modification technology on porous ceramics, achieving excellent oil-water separation performance with high oil absorption and holding capacities, as well as recyclability.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Yuhan Ren, Biao Zhang, Junda Shao, Jian Ye, Qiang Liu, Ye Gao, Haoqian Zhang, Zhaoxin Zhong, Yang Wang, Feng Ye
Summary: Integrated porous Al2O3-SiO2 ceramics were successfully prepared for load-bearing/wave-transmitting applications, with controlled mullite whisker morphology. The prepared ceramics exhibit high strength, high porosity, and good dielectric properties.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Feiyue Yang, Shuang Zhao, Wencai Sun, Kunfeng Li, Jun Chen, Zhifang Fei, Zichun Yang
Summary: In this study, fibrous porous mullite ceramics with high porosity and an interconnected pore structure were prepared, followed by modification of the pore structure with in situ grown mullite whiskers. The resultant hierarchical material exhibited superior sound absorption performance and low thermal conductivity.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Hailu Wang, Shujing Li, Yuanbing Li, Ruofei Xiang, Han Luo, Zimeng Zhou, Zhihao Zhang, Weijie Guo
Summary: This study successfully fabricated prickly porous ceramics (PPCs) with mullite whisker structures on the inside and outside surfaces, demonstrating large surface areas and high mechanical strength, paving the way for the fabrication of high-performance porous ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Bijaylaxmi Biswal, D. K. Mishra, Satyaprakash Narayan Das, Satyanarayan Bhuyan
Summary: The synthesized mullite ceramics demonstrate high dielectric constants and suitability for electronics-related applications, making them potential excellent materials.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Paula V. Lopez, Maria F. Hernandez, Diego Richard, Maria S. Conconi, Nicolas M. Rendtorff
Summary: This work explores the influence of the crystallinity of raw kaolinite clay on the properties of mullite ceramics. Two well and poorly crystallized kaolinite samples were assessed, along with two samples where the growth of mullite grains was promoted by adding a MoO3 precursor. The role of kaolinite crystallinity and the MoO3 precursor on the ceramic properties was studied.
APPLIED CLAY SCIENCE
(2023)
Article
Engineering, Manufacturing
Yueqi Cao, Xiaojing Xu, Zheng Qin, Chong He, Liwen Yan, Feng Hou, Jiachen Liu, Anran Guo
Summary: In this study, vat photopolymerization 3D printing was used to prepare highly complex Mu(f)-based porous ceramics. By adjusting the aspect ratio and content of mullite fiber, porous ceramics with low density and low thermal conductivity were obtained.
ADDITIVE MANUFACTURING
(2022)
Article
Materials Science, Ceramics
Xiang Li, Si Li, Ziyang Yin, Wuyang Shi, Mengya Tao, Wei Liu, Zhengxia Gao, Chengliang Ma
Summary: In this study, mullite porous ceramics with high apparent porosity were successfully prepared using a non-toxic and economical poly-gamma-glutamic acid (gamma-PGA) gelling system and the foaming method. The effects of the foaming agent and sintering temperature on the microstructure, apparent porosity, and mechanical properties of mullite porous ceramics were investigated. The prepared mullite porous ceramics exhibited excellent properties and were validated for potential use as catalyst supports.
CERAMICS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Xueying Zhang, Anran Guo, Xiaohui Ma, Haiyan Du, Liwen Yan, Feng Hou, Jiachen Liu
Summary: A novel porous fibrous ceramic with a unique fiber-based dual structure of lamellas is designed and fabricated based on the lightweight cuttlefish bone. The effects of lamellar components on the microstructure and mechanical performances of the product are systematically investigated. Compared with traditional porous fibrous materials, the cuttlefish-bone-structure-like lamellar porous fiber-based ceramics exhibit prominent comprehensive performances, making them a promising candidate for high-temperature thermal insulation systems.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Xiangtao Huo, Bin Xia, Tianzhuo Hu, Mei Zhang, Min Guo
Summary: In this paper, high-strength porous mullite ceramics were prepared by utilizing high alumina fly ash and MoO3 additive through a calcination method. MoO3 addition was found to significantly influence the pore structure and mechanical properties of the ceramics. The mechanism of MoO3 in promoting the growth of mullite whiskers and improving the matrix strength was explained. The optimized porous mullite ceramic exhibited a high porosity of 49.4% and an improved compressive strength of 13.03 MPa with the addition of 10 wt% MoO3, calcinated at 1300 degrees C.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Linghao Wu, Cuiwei Li, Yufeng Chen, Chang-an Wang
Summary: Porous anorthite/mullite whisker ceramics with high strength and low thermal conductivity were successfully prepared through a combination of seed-assisted in situ synthesis and foam-freeze casting techniques. The materials exhibited a high apparent porosity, low bulk density, high compressive strength, and low thermal conductivity, making them suitable for thermal insulating applications.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Kezhuo Li, Shengtao Ge, Gaoqian Yuan, Haijun Zhang, Jun Zhang, Jiangfeng He, Quanli Jia, Shaowei Zhang
Summary: The study shows that adding 2% V2O5 can significantly improve the flexural and compressive strength of columnar self-reinforced mullite porous ceramics, while maintaining a low thermal conductivity.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Yulong Yang, Wanyi Fu, Xixi Chen, Li Chen, Congyu Hou, Yanyi Wang, Tianhao Tang, Xihui Zhang
Summary: This study overcomes the problem of silica sol aggregation during the drying process by using sodium silicate solution and glass fibers in the fabrication of MFPCs. The resulting MFPCs exhibit low sintering temperature, high compressive strength, and porosity, ensuring uniformity.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
