Journal ArticleDOI
Studies on Preparation and Property of 2.5D SiO2f/ SiO2 Composites
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Abstract:
In this paper, 2.5D SiO2f/SiO2 composites were fabricated via sol-gel process employing 2.5D braided silica fiber fabrics as reinforcements and high pure silicasol as slurry. The process parameters are optimized and the optimal parameters are as follows: the silicasol of 30.8 wt. % as slurry, microwave drying, and sintering at 900 °C. Utilizing the optimal process parameters, the density and the flexural strength of the composites can reach 1.65 g•cm-3 and 80.68 MPa respectively. Dielectric properties of the 2.5D SiO2f/SiO2 composites were also measured, and the real part of the permittivity is 3.40 at 5 GHz. The excellent mechanical and dielectric properties of the 2.5D SiO2f/SiO2 composites can well meet the requirements of radome materials.read more
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Journal ArticleDOI
Mechanical properties and microstructure of 3D orthogonal quartz fiber reinforced silica composites fabricated by silicasol-infiltration-sintering
TL;DR: In this paper, the fracture toughness of 3D orthogonal quartz fiber reinforced silica composites has been enhanced by a wide margin using digital camera and scanning electron microscopy.
Journal ArticleDOI
Sol-gel process and high-temperature property of SiO2/ZrO2-SiO2 composites
TL;DR: SiO 2 /ZrO 2 -SiO2 composites were fabricated by the sol-gel process, and their high-temperature flexural properties were explored.
Journal ArticleDOI
High-temperature properties of 2.5D SiO2f/SiO2 composites by sol–gel
TL;DR: In this article, the fracture behavior of SiO2f/SiO2 composites under higher temperature was investigated and the results showed that the fracture mechanism was a combination of brittle and ductile fracture.
Journal ArticleDOI
Mechanical behavior of 2.5D (shallow bend-joint) and 3D orthogonal quartzf/silica composites by silicasol-infiltration-sintering
Yong Liu,Jianxun Zhu,Zhaofeng Chen,Yun Jiang,Binbin Li,Long Lin,Tianru Guan,Xiangna Cong,Chengdong Li +8 more
TL;DR: In this article, the effect of two different fiber architectures on the mechanical properties of the quartz fiber-reinforced silica composites processed by silicasol-infiltration-sintering (SIS) has been investigated.
Journal ArticleDOI
Mechanical properties and microstructure of 2.5D (shallow straight-joint) quartz fibers-reinforced silica composites by silicasol-infiltration-sintering
Yong Liu,Jianxun Zhu,Zhaofeng Chen,Yun Jiang,Chengdong Li,Binbin Li,Long Lin,Tianru Guan,Zhaohai Chen +8 more
TL;DR: In this paper, 2.5D (shallow straight-joint) quartz fibers-reinforced silica composites were successfully prepared by silicasol-infiltration-sintering method.