Tensile behavior of C/SiC composites plate after hypervelocity penetration: Residual strength and fracture mechanism

2018 ◽  
Vol 189 ◽  
pp. 378-385 ◽  
Author(s):  
Tao Li ◽  
Xia Yu ◽  
Huifang Liu ◽  
Hongsheng Yang ◽  
Yulong Li
2014 ◽  
Vol 49 (23) ◽  
pp. 8192-8203 ◽  
Author(s):  
Zhigang Sun ◽  
Xuming Niu ◽  
Zhenjian Wang ◽  
Yingdong Song ◽  
Xianqiao Wang

Ceramics ◽  
2019 ◽  
Vol 2 (4) ◽  
pp. 602-611
Author(s):  
Shoko Suyama ◽  
Masaru Ukai ◽  
Megumi Akimoto ◽  
Toshiki Nishimura ◽  
Satoko Tajima

The corrosion behaviors of SiC/SiC composite constituent materials in pure water at operating conditions, such as 300 °C and 8.5 MPa, were studied for potential application in accident-tolerant light water reactor (LWR) fuel cladding and core structures. Five kinds of SiC fibers, four kinds of SiC matrices, and three kinds of fiber/matrix interphase materials were examined in autoclaves. The potential constituent materials for future use in SiC/SiC composites were selected by considering corrosion rates and residual strength characteristics. The mass changes and the residual strength of each specimen were measured. SEM images of the surface layers were also inspected. The SiC fibers, regardless of their purity, crystallinity or stoichiometric ratio, decreased in strength due to the hydrothermal corrosion. For its part, the hydrothermal corrosion resistance of CVD-SiC, as a SiC matrix, was found to be affected by manufacturing conditions such as raw material gas type and synthesis temperature, as well as post-machining morphology. The CVD-carbon (CVD-C), as a fiber/matrix interphase material, showed good hydrothermal corrosion resistance. In order to protect the SiC fibers and the SiC matrices from hydrothermal corrosion, it would appear to be necessary to apply a dense CVD-C coating to both every fiber and the entire surface of the SiC matrices.


2006 ◽  
Vol 54 (11) ◽  
pp. 1967-1971 ◽  
Author(s):  
Junqiang Ma ◽  
Yongdong Xu ◽  
Litong Zhang ◽  
Laifei Cheng ◽  
Jingjiang Nie ◽  
...  

2014 ◽  
Vol 40 (10) ◽  
pp. 16635-16640 ◽  
Author(s):  
Hui Mei ◽  
Qianglai Bai ◽  
Haiqing Li ◽  
Changkui Yu ◽  
Laifei Cheng

2013 ◽  
Vol 544 ◽  
pp. 48-51 ◽  
Author(s):  
Yu Hong Chen ◽  
Lan Er Wu ◽  
Wen Zhou Sun ◽  
Yong Jiang ◽  
You Jun Lu

Particle reinforced SiC composites with the addition of TiB2 were fabricated in range of 1750°C to 1950°C by pressureless sintering by utilizing liquid phase with AlN-Y2O3 as sintering additives. The effective of sintering aids in densification, the mechanical properties of sintered sample and the microstructure had been investigated in this paper. The results showed that the best densification behaviors occurred in AlN:Y2O3 at 60 :40%mol ratio not at eutectic point. Adding TiB2 to SiC matrix increase the toughness and decreased the hardness. Microstructure analysis showed that the increasing of toughness was due to the crack deflection with some contribution intergranular fracture mechanism.


2020 ◽  
Vol 79 (4) ◽  
pp. 212-220
Author(s):  
Peng Chen ◽  
Xuming Niu ◽  
Xihui Chen ◽  
Zhigang Sun ◽  
Pengjian Zou ◽  
...  

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