<trans-title>Optimizing Microstructure and Properties of SiC<sub>f</sub>/SiC Composites Prepared by Reactive Melt Infiltration </trans-title>

Junmin ZHANG; Xiaowu CHEN; Chunjin LIAO; Feiyu GUO; Jinshan YANG; Xiangyu ZHANG; Shaoming DONG

doi:10.15541/jim20210091

Journal of Inorganic Materials, Volume. 36, Issue 10, 1103(2021)

Optimizing Microstructure and Properties of SiC_f/SiC Composites Prepared by Reactive Melt Infiltration

Junmin ZHANG1...2,3, Xiaowu CHEN1,2,*, Chunjin LIAO1,2, Feiyu GUO1,2,3, Jinshan YANG1,2, Xiangyu ZHANG1,2, and Shaoming DONG12,* |Show fewer author(s)

Author Affiliations

¹1. State Key Laboratory of High Performance Ceramics and Superﬁne Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

²2. Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

³3. School of Physical Science and Technology, Shanghai Tech University, Shanghai 200031, China

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Figures & Tables(10)

. Flowchart of SiC_f/SiC composites fabrication process

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. SEM images of pyrolytic carbon prepared with different organic pore former contents ((a) Pure PF; (b) Organic pore former: PF=0.1; (c) Organic pore former: PF=0.2, (d) Organic pore former: PF=0.3); (e) Pore size distribution of pyrolytic carbon

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. Cross-sectional SEM images of preforms ((a) Pre-1, (b) Pre-2, (c) Pre-3), and (d) pore size distribution of the preforms

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. XRD patterns of SiC_f/SiC composites prepared with different impregnation treatments

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. Cross-sectional SEM images of SiC_f/SiC (a) Com-1, (b) Com-2 and (c) Com-3

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. Elemental analyses of inter/intra-bundle matrix in composites

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$(a) Bending load-displacement curves of composites, and fractural surface SEM images of composite ((b) Com-1, (c) Com-2 and (d) Com-3)$

. (a) Bending load-displacement curves of composites, and fractural surface SEM images of composite ((b) Com-1, (c) Com-2 and (d) Com-3)

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. (a) Schematic of reaction layer generated during the RMI, (b) curves of cumulative volume percentage vs pore diameter of preforms, and (c) variation of pore radius with infiltration time for preforms

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Table 1.
Different impregnation treatments to the preforms
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Table 1.
Different impregnation treatments to the preforms
Preform Preparing process Further impregnation Composites
Pre-1 Slurry impregnation None Com-1
Pre-2 Slurry impregnation Pure PF Com-2
Pre-3 Slurry impregnation Polymer blend Com-3

Table 2.
Comparison of the mechanical properties of the SiC_f/SiC composites

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Table 2.
Comparison of the mechanical properties of the SiC_f/SiC composites

Composites	Density/(g·cm^-3)	Open porosity/%	Flexural strength/MPa	Elastic modulus/GPa
Com-1	(2.41±0.08)	(10.08±0.50)	(96.04±9.50)	(42.53±0.73)
Com-2	(2.57±0.08)	(8.39±0.58)	(176.76±3.78)	(67.55±0.46)
Com-3	(2.61±0.05)	(7.92±0.61)	(200.50±7.33)	(79.19±0.65)

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Junmin ZHANG, Xiaowu CHEN, Chunjin LIAO, Feiyu GUO, Jinshan YANG, Xiangyu ZHANG, Shaoming DONG. Optimizing Microstructure and Properties of SiC_f/SiC Composites Prepared by Reactive Melt Infiltration [J]. Journal of Inorganic Materials, 2021, 36(10): 1103

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