The ablation and mechanical behaviors of C/(SiC-ZrC)n multi-layer structure matrix composites by chemical vapor infiltration

Feng, Tao; Shi, Xinhao; Hou, Wanbo; Mu, Tong; Li, Hejun; Hui, Lin; Wen, Shifeng

doi:10.1016/j.jeurceramsoc.2022.04.026

Cited by 23 publications

(5 citation statements)

References 34 publications

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“…The HfC precursor was prepared from the HfCl 4 ‐acetylacetonate‐ethanol‐p‐hydroquinone system (HfCl 4 ; 98.7%, Alfa Aesar), acetylacetone (99.9%, Aladdin), ethanol (99.9%, Sinopharm Chemical Reagent Co., Ltd.), and hydroquinone (99.9%, Aladdin). The exact preparation of the HfC precursors has been documented in detail in our previous work 31 …”

Section: Methodsmentioning

confidence: 99%

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Tensile creep properties and damage mechanisms of 2D‐woven C/HfC–SiC composites in high temperature

Wen

Hou

et al. 2023

Int J Applied Ceramic Tech

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2D-C/HfC-SiC composites were prepared by a combination of precursor infiltration and pyrolysis (PIP) and chemical vapor infiltration (CVI). Creep tests were performed at 1100 • C in air under different stress conditions. Unlike most, C/SiC and SiC/SiC ceramic matrix composites only underwent primary and secondary creep stages, and the C/HfC-SiC composites underwent tertiary creep stage in the creep process. The reason was that the mechanical properties of C/HfC-SiC materials prepared by PIP + CVI methods were different from those prepared by traditional methods. The microscopic morphological analysis of the sample fracture showed that the oxidation products SiO 2 and Hf-Si-O glass phases of the HfC-SiC matrix played a crack filling role in the sample during creep. In turn, it provided effective protection to the internal fibers of the sample. The creep failure of C/HfC-SiC composites in a high-temperature oxidizing atmosphere was caused by the oxidation of the fibers. The total creep process was dominated by the oxidation of carbon fibers. It is noteworthy that there was the generation of Hf x Si y O z nanowires in the samples after high-temperature creep. The analysis of the experimental data showed that the creep stress had a linear negative correlation with the creep life.

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Section: Methodsmentioning

confidence: 99%

“…The exact preparation of the HfC precursors has been documented in detail in our previous work. 31 Impregnation and cleavage of HfC precursors were performed in two steps. In the first step, the preforms are placed into a beaker containing the HfC precursor.…”

Section: Preparation Impregnation and Cleavage Of Hfc Precursorsmentioning

confidence: 99%

Tensile creep properties and damage mechanisms of 2D‐woven C/HfC–SiC composites in high temperature

Wen

Hou

et al. 2023

Int J Applied Ceramic Tech

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“…Some researchers have been inspired by the layered structure of sea shells; alternating ceramic composition in multilayers, as presented in Figure 3d1, could improve the strength, toughness, and some functional performance of composites. 38 Jia et al prepared the C/(PyC-SiC) n (n = 1, 2, 4) composites by CVI and found that a multilayer structure in composites provides crack propagation paths and multiple stages of carbon fiber pullout facilitating energy dissipation (Figure 3d2,d3). 39 With the increasing number of sequences, the flexural strength and fracture toughness of composites increased from 121 to 193 MPa and from 3.0 to 4.2 MPa•m 1/2 , respectively (Figure 3d4).…”

Section: Uniform Distributionmentioning

confidence: 99%

Novel Structural Design Strategies in Ceramic-Modified C/C Composites

Yin,

Zhang,

Liu

et al. 2023

Acc. Mater. Res.

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“…Therefore, the exposed CFs are ablated to the needle-like shape (Figure 11E). Moreover, observing the local magnified image in Figure 11E, there are several spherical oxide particles dispersed on the surface of the fibers, [24][25][26] which is advantageous for shielding the fibers from direct attack of torch. The consuming of PyC/SiC layers and the serious structure damage of CFs shown in Figure 11F also indicate the protection failure of PyC/SiC interfacial layers in the ablation center.…”

Section: Ablative Property and Morphology Of Pyc/bn And Pyc/sic Inter...mentioning

confidence: 99%

Ablative and mechanical properties of C/C‐SiC‐ZrC composites modified with PyC/SiC and PyC/BN interface layers

Zhang,

Yi,

Yang

et al. 2023

Int J Applied Ceramic Tech

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Two kinds of novel modified C/C‐SiC‐ZrC composites were prepared via precursor infiltration and pyrolysis, as pyrocarbon (PyC)/silicon carbide (SiC) and PyC/boron nitride (BN) dual‐layer interphases were separately structured on the fibers by means of chemical vapor infiltration. Data analysis and conclusions are served for investigating the effects of these two interface layers on mechanical and anti‐ablative properties. On the mechanical property hand, both PyC/BN and PyC/SiC interphase layers play positive roles, resting with the reduction of fiber damage during the fabrication process. Compared with BN, SiC shows better enhancement as the flexural strength of PyC/BN and PyC/SiC interphase‐modified composites are 214.9 and 229.2 MPa, respectively. On the ablative property hand, after oxyacetylene flame ablation for 60 s, the mass and linear ablation rates of the composites modified by PyC/SiC interface were 2.2 mg/s and 9.7 μm/s, which is much lower than that modified by PyC/BN. The inferior ablation properties of PyC/BN‐CSZ were attributed to the vaporization of the B2O3 gas that destroys the integrity of the oxide film and oxygen erosion on the substrate through the damaged BN interface.

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The ablation and mechanical behaviors of C/(SiC-ZrC)n multi-layer structure matrix composites by chemical vapor infiltration

Cited by 23 publications

References 34 publications

Tensile creep properties and damage mechanisms of 2D‐woven C/HfC–SiC composites in high temperature

Tensile creep properties and damage mechanisms of 2D‐woven C/HfC–SiC composites in high temperature

Novel Structural Design Strategies in Ceramic-Modified C/C Composites

Ablative and mechanical properties of C/C‐SiC‐ZrC composites modified with PyC/SiC and PyC/BN interface layers

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