Thermal properties, oxidation corrosion behavior, and the in situ ceramization mechanism of SiB6@BPR/HF composites under high-temperature corrosion

Zou, Zhenyue; Qin, Yan; Xue, Chenyi; Zhu, Di; Fu, Huadong; Deng, Zongyi; Zhang, Huang

doi:10.1016/j.corsci.2021.109913

Cited by 15 publications

(4 citation statements)

References 25 publications

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“…These peaks from high bond energy to low bond energy belong to B 2 O 3 , not completely oxidized B (B x O, 1 < x < 6) and B–B, respectively. 38–40…”

Section: Resultsmentioning

confidence: 99%

“…These peaks from high bond energy to low bond energy belong to B 2 O 3 , not completely oxidized B (B x O, 1 < x < 6) and B-B, respectively. [38][39][40] Compared with the raw material B, B@LiF in the process of ball milling preparation, the B particles were broken down and generated new B 2 O 3, increasing B 2 O 3 on the B surface. The newly formed B 2 O 3 could protect the internal active B from being oxidized, so the B x O content on the surface of B@LiF decreased and the B-B content increased.…”

Section: Surface Compositionmentioning

confidence: 99%

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Dual-core–shell structure B@LiF@AP with multi-effect synergies to improve processibility and energy release characteristics of B

et al. 2023

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“…These peaks from high bond energy to low bond energy belong to B 2 O 3 , not completely oxidized B (B x O, 1 < x < 6) and B–B, respectively. 38–40…”

Section: Resultsmentioning

confidence: 99%

Section: Surface Compositionmentioning

confidence: 99%

Dual-core–shell structure B@LiF@AP with multi-effect synergies to improve processibility and energy release characteristics of B

et al. 2023

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“…To address these challenges, many works have been carried out, such as the introduction of B-based ceramics, 12,13 Si-based ceramics, 14,15 Zr-based ceramics 16,17 into PR, many studies have shown that the introduction of ceramics prevents the oxidation of residue char, as a high temperature resistant ceramic coating can be formed during the ablation. However, in the actual manufacturing process, there are certain manufacturing difficulties due to the difference in density between the filler and the resin matrix.…”

Section: Introductionmentioning

confidence: 99%

Enhanced ablation resistance of carbon/phenolic composites based on mesophase pitch reinforced particles

Yue,

Huang,

Zou

et al. 2023

J of Applied Polymer Sci

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Phenolic resin (PR)‐based composites are the main materials used in thermal protection system (TPS) at present. However, the low graphitization degree of the char layer formed by PR easily leads to cracks and other defects. In this study, carbon/phenolic composites were modified by mesophase pitch (MP) to improve the structural strength, fracture toughness and crack propagation resistance. The ablation rate was significantly decreased after MP modification compared with the blank sample. With the increase of MP, the size of cracks and char blocks on the ablation center of the composites were reduced, and the surface was flat and dense. The Interlaminar shear strength (ILSS) of carbonized composites (5 wt% MP) were 9.79 MPa, and the flexural strength was 121.5 MPa, which improved 62.9% and 40.8% relative to the pure sample. The flexural strength of 5 wt% MP‐reinforced carbon/phenolic composites reached 525.6 MPa, which was 26.9% higher than that of pure carbon/phenolic composites, mainly due to the particle reinforcement effect of MP distributed between carbon fibers. The above results show that the carbon/phenolic composites modified by MP has great application prospects in the field of aircraft thermal protection.

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“…When used in harsh environments, such as hypersonic aircrafts, the polymer matrices of the ceramifiable composites are often selected to have a high char yield [21]. Zou et al [22] used boron phenolic resin, high silica fiber, and SiB 6 to prepare the ceramifiable boron phenolic resin matrix composites. The results showed that the linear ablation rates of composites reached 7.5 µm/s, and the ceramization reaction prevented the corrosion of composites under an aerobic high-temperature environment of about 1800-1900 • C.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stability, Mechanical Properties and Ceramization Mechanism of Epoxy Resin/Kaolin/Quartz Fiber Ceramifiable Composites

Xue

Qin

et al. 2022

Polymers

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The application of epoxy resins in high temperature and thermal protection fields is limited due to their low decomposition temperature and low carbon residual rate. In this paper, epoxy resin (EP)/quartz fiber (QF) ceramifiable composites were prepared using a prepreg-molding process. The thermal stability, phase change and mechanical properties after high-temperature static ablation and ceramization mechanism of EP/QF ceramifiable composites were investigated. The addition of glass frits and kaolinite ceramic filler dramatically increases the thermal stability of the composites, according to thermogravimetric (TG) studies. The composite has a maximum residual weight of 61.08%. The X-ray diffraction (XRD) results show that the mullite ceramic phase is generated, and a strong quartz diffraction peak appears at 1000 °C. The scanning electron microscope (SEM) and element distribution analyses reveal that the ceramic phase generated inside the material, when the temperature reaches 1000 °C, effectively fills the voids in composites. The composites have a bending strength of 175.37 MPa at room temperature and retain a maximum bending strength of 12.89 MPa after 1000 °C treatment.

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Thermal properties, oxidation corrosion behavior, and the in situ ceramization mechanism of SiB6@BPR/HF composites under high-temperature corrosion

Cited by 15 publications

References 25 publications

Dual-core–shell structure B@LiF@AP with multi-effect synergies to improve processibility and energy release characteristics of B

Dual-core–shell structure B@LiF@AP with multi-effect synergies to improve processibility and energy release characteristics of B

Enhanced ablation resistance of carbon/phenolic composites based on mesophase pitch reinforced particles

Thermal Stability, Mechanical Properties and Ceramization Mechanism of Epoxy Resin/Kaolin/Quartz Fiber Ceramifiable Composites

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