scholarly journals A lanthanum monazite coated silicon carbide fiber reinforced SiBCN composite with improved mechanical properties for high temperature applications

2018 ◽  
Vol 126 (8) ◽  
pp. 632-640
Author(s):  
Xi TAN ◽  
Wei LIU ◽  
Lamei CAO ◽  
Shenglong DAI
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
High Temperature ◽  
Silicon Carbide Fiber ◽  
Fiber Reinforced ◽  
Temperature Applications

Mechanical Properties and Microstructure of KD-1 SiCf/SiC Composites Fabricated by Vapor Silicon Infiltration

2011 ◽  
Vol 675-677 ◽  
pp. 151-153
Author(s):  
Hong Lei Wang ◽  
Xin Gui Zhou ◽  
Ying Bin Cao ◽  
Jin Shan Yu ◽  
Rong Jun Liu
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Open Porosity ◽  
Silicon Carbide Fiber ◽  
Fiber Reinforced ◽  
Sic Fibers ◽  
Carbide Matrix ◽  
Silicon Carbide Matrix ◽  
Sic Composites ◽  
Polymer Impregnation

Continuous silicon carbide fiber reinforced silicon carbide matrix (SiCf/SiC) composites were fabricated by a combining polymer impregnation and pyrolysis (PIP) and vapor silicon infiltration (VSI) process. The mechanical properties and microstructure of the SiCf/SiC composites were studied. The results show that the open porosity of the SiCf/SiC composites is near zero. The density and mechanical properties of SiCf/SiC increase with decreasing the porosity of SiCf/C. However, the SiC fibers are damaged during the VSI process due to the reaction between SiC fibers and vapor Si.

scholarly journals Fabrication of Silicon Carbide Fiber-Reinforced Silicon Carbide Matrix Composites Using Binder Jetting Additive Manufacturing from Irregularly-Shaped and Spherical Powders

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1766 ◽  
Author(s):  
Igor Polozov ◽  
Nikolay Razumov ◽  
Dmitriy Masaylo ◽  
Alexey Silin ◽  
Yuliya Lebedeva ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Additive Manufacturing ◽  
Matrix Composites ◽  
Silicon Carbide Fiber ◽  
Fiber Reinforced ◽  
Microstructure And Mechanical Properties ◽  
Sic Composites ◽  
Polymer Infiltration ◽  
Binder Jetting

In this paper, silicon carbide fiber-reinforced silicon carbide (SiCf/SiC) composites were fabricated using binder jetting additive manufacturing followed by polymer infiltration and pyrolysis. Spherical SiC powders were produced using milling, spray drying, and thermal plasma treatment, and were characterized using SEM and XRD methods. Irregularly shaped and spherical SiC powders were used to obtain SiCf/SiC blends for the application in binder jetting. The effect of SiC powder shape on densification behavior, microstructure, and mechanical properties of binder jetted SiCf/SiC composites was evaluated. The highest density of 2.52 g/cm3 was obtained after six polymer infiltration and pyrolysis cycles. The microstructure and mechanical properties of the fabricated SiCf/SiC composites were characterized. Using the spherical SiC powder resulted in higher fracture toughness and hardness, but lower flexural strength compared to the irregularly shaped powder. It was shown that it is feasible to fabricate dense SiCf/SiC composites using binder jetting followed by polymer infiltration and pyrolysis.

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