Optimization of Pyrolysis and Liquid Silicon Infiltration Parameters for the Processing of C C SiC Composites

2016-11-25
Tulbez, Simge
Esen, Ziya
Dericioğlu, Arcan Fehmi
The aim of the current study is to investigate the production and characterization of Carbon Fiber Reinforced Silicon Carbide (C/C-SiC) Matrix Composites. Liquid silicon infiltration (LSI) method was utilized to produce the C/C-SiC composites. Processing of these composites via LSI process contains there main steps: Carbon Fiber Reinforced Polymer (CFRP) composite production, pyrolysis and liquid silicon infiltration. Each production step has an important effect on the efficiency of the LSI process, therefore, present study investigates the effect of the parameters of each step on the silicon infiltration process by comparing the properties of C/C preforms and resulting C/C-SiC composites obtained by various processing conditions. Increasing pyrolysis temperature results in decreasing density along wtih increasing porosity content and crack opening of the C/C preform which directly affect the efficiency of subsequent LSI process. Comparison of density, microstructure and flexural strength values of resulting C/C-SiC composites revealed that pyroO\VLVPXVWEHDSSOLHGDWƒC and following silicon infiltration of the C/C preforms must EHFRQGXFWHGDWƒC in vacuum atmosphere.
Citation Formats
S. Tulbez, Z. Esen, and A. F. Dericioğlu, “Optimization of Pyrolysis and Liquid Silicon Infiltration Parameters for the Processing of C C SiC Composites,” İstanbul, Türkiye, 2016, p. 48, Accessed: 00, 2021. [Online]. Available: http://www1.metalurji.org.tr/immc2016/IMMC2016_Bildiriler.pdf.