Morphology and microstructure of SiC/SiC composites ablated by oxyacetylene torch at 1800°C

Yu, Guoqiang; Du, Jinkang; Zhao, Xuecan; Xie, Chuyang; Gao, Xiguang; Song, Yingdong; Wang, Fang

doi:10.1016/j.jeurceramsoc.2021.06.026

Cited by 24 publications

(8 citation statements)

References 27 publications

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“…Figure a shows the XRD patterns of two different char layers before and after ZB modification. Two broad peaks appearing at 2θ angles of 9.42 and 21.96° were attributed to SiO 2 (PDF 51-1377, 51-1379), respectively, which provides a barrier to outside gases. , Three sharp peaks observed at 2θ angles of about 35.43, 59.86, and 71.71° are the characteristic peaks of SiC (PDF #29-1129). It is speculated that SiC is produced in situ by siloxane ceramization or a carbothermal reaction, which contributes to high temperature and ablation resistance of the composites. , Besides, the characteristic peak observed at 27.75° was attributed to B 2 O 3 (PDF 06-0297), which can be presumed to be a decomposition product of ZB.…”

Section: Results and Discussionmentioning

confidence: 99%

“…Two broad peaks appearing at 2θ angles of 9.42 and 21.96°were attributed to SiO 2 (PDF 51-1377, 51-1379), respectively, which provides a barrier to outside gases. 60,61 Three sharp peaks observed at 2θ angles of about 35.43, 59.86, and 71.71°are the characteristic peaks of SiC (PDF #29-1129). It is speculated that SiC is produced in situ by siloxane ceramization or a carbothermal reaction, which contributes to high temperature and ablation resistance of the composites.…”

Section: Synergistic Mechanism Of Ablation-resistant Reinforced and I...mentioning

confidence: 99%

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Flexible Thermal Protection Polymeric Materials with Self-Sensing and Self-Adaptation Deformation Abilities

Chi

Cai

Yan

et al. 2023

ACS Appl. Mater. Interfaces

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Based on the strategy of killing two birds with one stone, we introduce thermally expandable microspheres into a silicone rubber matrix to fabricate temperature-responsive controllable deformation materials, which exhibit intelligent deformation properties as well as enhanced thermal protection performance, for dynamic thermal protection in the next-generation morphing aircrafts. The formation of hollow structures endows the material with intelligent thermal management ability and makes the thermal conductivity controllable, meeting the requirements of rapid deformation and excellent thermal insulation. The dimensions of the material adaptively expand with increasing temperature, and a constant 50N force can be provided to ensure reliable sealing. Moreover, benefiting from the synergistic effect of the hollow structure and zinc borate in the ceramization process of the silicone rubber, the 10 mm thick material can reduce the temperature from 2000 to 63 °C, and the mass ablation rate is only 4.8 mg/s. To broaden the application of our material, a sensor with a sandwich structure composed of different functional layers is designed. It is pleasantly surprising to observe that the sensor can provide real-time remote warning of fire and overheating sites with a response time as short as 1 s. This synergistic strategy opens a new possibility to fabricate intelligent thermal protection materials.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Synergistic Mechanism Of Ablation-resistant Reinforced and I...mentioning

confidence: 99%

Flexible Thermal Protection Polymeric Materials with Self-Sensing and Self-Adaptation Deformation Abilities

Chi

Cai

Yan

et al. 2023

ACS Appl. Mater. Interfaces

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show abstract

“…Many scholars have researched the ablation mechanism of composites such as C/C, C/SiC, and SiC/SiC [7][8] . CMCs have good anti-ablation performance below 2000℃, but as the temperature continues to rise, CMCs are unable to meet the required ablation performance [9] . Many scholars have studied the ablation performance of CMCs with added refractory metal compounds.…”

Section: Introductionmentioning

confidence: 99%

Ablation Performance of C/SiC-ZrC Composites

Hailang,

ZHANG,

Jinkang

et al. 2024

Preprint

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To reveal the ablation performance of C/SiC-ZrC composites under different ablation methods, C/SiC-ZrC composites were prepared by chemical vapor deposition and precursor impregnation cracking methods. Single ablation and cyclic ablation tests were conducted on C/SiC-ZrC composites using an oxyacetylene flame to obtain ablation parameters and macroscopic and microscopic ablation morphology for different ablation methods. The results show that the line ablation rate and mass ablation rate of different ablation methods decrease with increasing time; The linear ablation rate and mass ablation rate of cyclic ablation are 12% and 24.2% lower than those of single ablation; Within the same ablation time, the C/SiC-ZrC composites subjected to cyclic ablation has shallower and more evenly distributed pits caused by high-temperature airflow ablation; The material surface has a white oxide layer composed of SiO2 and ZrO2, and the carbon fibers inside are wrapped by oxide particles, which improves the ablation resistance of C/SiC-ZrC composites.

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“…Many scholars have researched the ablation mechanism of composites such as C/C, C/SiC, SiC/SiC, and other composites [8][9][10][11][12][13][14]. CMCs have good anti-ablation performance below 2000 • C, but as the temperature continues to rise, CMCs are unable to meet the required ablation performance [15]. Many scholars have studied the ablation performance of CMCs with added refractory metal compounds.…”

Section: Introductionmentioning

confidence: 99%

Cyclic Ablation Properties of C/SiC-ZrC Composites

Ge,

Zhang,

Zhang

et al. 2024

Aerospace

Self Cite

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To reveal the ablation performance of C/SiC-ZrC composites under different ablation modes, C/SiC-ZrC composites were prepared using chemical vapor deposition, precursor infiltration, and pyrolysis. Single ablation and cyclic ablation tests were conducted on the C/SiC-ZrC composites using an oxyacetylene flame, in order to obtain ablation parameters, as well as macroscopic and microscopic ablation morphology for the different ablation modes. The results show that the linear ablation rate and mass ablation rate of different ablation modes decrease with increasing time. The linear ablation rate and mass ablation rate of cyclic ablation are 12% and 24.2% lower than those of single ablation. Within the same ablation time, the C/SiC-ZrC composites subjected to cyclic ablation exhibit shallower and more evenly distributed pits, caused by high-temperature airflow ablation. The material surface has a white oxide layer composed of SiO2 and ZrO2, and the carbon fibers inside are wrapped by oxide particles, enhancing the ablation resistance of C/SiC-ZrC composites.

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Morphology and microstructure of SiC/SiC composites ablated by oxyacetylene torch at 1800°C

Cited by 24 publications

References 27 publications

Flexible Thermal Protection Polymeric Materials with Self-Sensing and Self-Adaptation Deformation Abilities

Flexible Thermal Protection Polymeric Materials with Self-Sensing and Self-Adaptation Deformation Abilities

Ablation Performance of C/SiC-ZrC Composites

Cyclic Ablation Properties of C/SiC-ZrC Composites

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