Iranian Journal of Ceramic Science & Engineering
Volume 12, Issue 1 (spring 2023)
2023, 12(1): 65-91 |
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Mashhadi M, Farhang Rad F. Investigating the influence of ZrB2-ZrC-SiC powders amount on density and resistance to ablation of C/C-ZrB2-ZrC-SiC composite built of carbon fabric and felt developed by the method of pressureless sintering. Iranian Journal of Ceramic Science & Engineering 2023; 12 (1) :65-91
URL: http://ijcse.ir/article-1-934-en.html
URL: http://ijcse.ir/article-1-934-en.html
1- , me_mashadi@yahoo.com
Abstract: (1121 Views)
As a result of their low weight and significant physical, mechanical and ablation behaviors, the carbon fabric composites and reinforced felt with ultrahigh temperature ceramics (UHTCs) have become the focus of aerospace industries. In this research, carbon fabric composites and resin have been used as matrix and the combination of ZrB2 76 wt%, ZrC 10 wt%, SiC 10 wt% powders as reinforcement and B4C 4% powder has been utilized as additive the mixture of mentioned powders with weight ratio of 25, 50, 75 precent was splashed on the carbon fabric and felt layers. for comparison, samples of 100% ceramic powder and 100% carbon fabric and felt were made as control samples. When the samples become dried up, they were pressed and sintered by pressureless sintering method. The results indicated that increasing the amount of powders led to samples density and shrinkage increase. The highest density is related to the sample without carbon fabric and felt with a relative density of 98.5. Also, the porosity decreased with the increase in the weight percentage of the powder, and the lowest porosity is related to the sample without carbon fabric and felt with a value of 0.5%. In this research, it was found that the lowest linear oxidation is related to the sample containing 75% ceramic powder in the carbon fabric group with a value of 3.17×10-2 (mm/s) (mm/s)
Keywords: carbon/carbon composite, UHTC composites, ZrB2-ZrC-SiC composites, carbon fabric, felt, oxidation.
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