Fiber reinforced highly porous γ-Y2Si2O7 ceramic fabricated by foam-gelcasting-freeze drying method. (15th March 2018)

• Record Type: Journal Article
• Authors: Wu, Zhen; Sun, Luchao; Pan, Jingjing; Wang, Jingyang
• Is Part Of: Scripta materialia. Number 146(2018)
• Page Start: 331
• Page End: 334
• Publication Date: 2018-03-15
• Subjects: Fiber reinforced porous ceramic -- Foam-gelcasting-freeze drying method -- Thermal insulation -- Mechanical property; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.12.017
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Advanced thermal insulators request excellent properties, including low thermal conductivity, lightweight (high porosity) and high strength. It was a challenge to coordinatively achieve extremely high porosity (> 90%) and high strength. We herein report a foam-gelcasting-freeze drying method to process highly porous ceramic. Yttria-Stabilized Zirconia (YSZ) fiber strengthening approach is incorporated to enhance its mechanical property. Our YSZ fiber reinforced porous γ-Y2 Si2 O7 ceramic shows very high porosity (92.9%), high compressive strength (1.35 MPa), and extremely low thermal conductivity (0.090 W/(m·K)). The developed highly porous composite is a promising high-temperature thermal insulator. Graphical abstract: Image 1