Preparation and in-situ high-temperature mechanical properties of C_f-SiC_f reinforced geopolymer composites

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• 作者：Shu Yan^a ; ^b ; Peigang He^a ; ^b ; ^{peiganghe@hit.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Yao Zhang^a ; ^b ; Dechang Jia^a ; ^b ; ^{dcjia@hit.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Jinyan Wang^a ; ^b ; Xiaoming Duan^a ; ^b ; Zhihua Yang^a ; ^b ; Yu Zhou^a ; ^b
• 关键词：Hybrid fiber ; Geopolymer ; High-temperature mechanical properties ; Composites
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：549-555
• 全文大小：2625 K

文摘

The hybrid C_f and SiC_f reinforced geopolymer (C_f-SiC_f/KGP) composites were successfully prepared by a simple method that mixing a kind of hybrid fiber preform pre-developed in geopolymer resin. The microstructure evolution and high temperature mechanical properties of the composites were studied. Results showed that all the composites showed typical amorphous structure and changed to leucite after being tested above 1000 °C. The high-temperature mechanical properties of the C_f-SiC_f/KGP samples decreased with the temperature increasing. The composites tested at 800 and 1000 °C showed none catastrophic failure mode, which was attributed to the interface debonding, fiber fracturing and pulling-out.