Evolutions of Microstructures and Properties of SiC Fibers Annealed at Elevated Temperatures

doi:10.12044/j.issn.1007-2330.2019.02.007

Home > Archive>Volume 49, Issue 2, 2019 >36-40. DOI:10.12044/j.issn.1007-2330.2019.02.007

Evolutions of Microstructures and Properties of SiC Fibers Annealed at Elevated Temperatures
DOI:
                        10.12044/j.issn.1007-2330.2019.02.007
                    
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Author:
                        JIN EnzeJIN Enze
Science and Technology on Advanced Functional Composites Laboratory, Aerospace Research Institute of Materials & Processing Technology,Beijing 100076
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SUN WentingSUN Wenting
Science and Technology on Advanced Functional Composites Laboratory, Aerospace Research Institute of Materials & Processing Technology,Beijing 100076
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SUN XinSUN Xin
Science and Technology on Advanced Functional Composites Laboratory, Aerospace Research Institute of Materials & Processing Technology,Beijing 100076
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WANG HaoWANG Hao
Science and Technology on Advanced Functional Composites Laboratory, Aerospace Research Institute of Materials & Processing Technology,Beijing 100076
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LI JunpingLI Junping
Science and Technology on Advanced Functional Composites Laboratory, Aerospace Research Institute of Materials & Processing Technology,Beijing 100076
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Affiliation:Science and Technology on Advanced Functional Composites Laboratory, Aerospace Research Institute of Materials & Processing Technology,Beijing 100076
Clc Number:TQ343
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Abstract:

In order to investigate the relations between microstructures and properties of SiC fibers, SiC fibers are annealed in air and Ar respectively at elevated temperatures in this study. The strength of SiC fibers annealed in air decreases as the temperature increases above 1100℃. When the temperature reaches 1 200℃, bubbles are formed in the silica layer. The strength of SiC fibers annealed in Ar decreases gradually as the temperature increases above 1100℃, while decreases sharply as the temperature increases above 1500℃. accompanied by the transition of β-SiC to α-SiC and the enhancement of SiC grain size

Key words:SiC fiber;Anneal;Tensile strength;Microstructure

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Received:April 29,2018
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Online: April 01,2019
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