Effect of ZrC–SiC content on microstructure and ablation properties of C/C composites

Li, Jun; Yang, Xin; Su, Zhean; Li, Xue; Zhong, Peng; Li, Shuaipeng; Huang, Qizhong; Liu, Hongwei

doi:10.1016/s1003-6326(16)64392-3

Cited by 41 publications

(13 citation statements)

References 34 publications

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“…Li et al prepared C/C-ZrC-SiC composites by using porous C/C composites with different densities [26], and it is demonstrated that a lower density reveals a faster densification process, whereas the composites with proper ceramic content exhibit better ablation resistance. Meanwhile, the reported studies verify that the SiC/ZrC ratio and ceramic content have great effects on the ablation and mechanical properties of C/C-ZrC-SiC composites [27,28]. Yan et al prepared the C/C-ZrC-SiC composites by PIP method with different thicknesses of PyC interphase [29], which confirming that the mechanical and ablative performance of the composites can be optimized through adjusting the thicknesses of PyC layer.…”

Section: Introductionmentioning

confidence: 88%

“…In addition, the reported literature further verifies that the heat treatment temperature has profound effects on ablative and mechanical performance of C/C-UHTC composites [33]. Though the effects of microstructures, ablation environments, and fabrication method on ablation and mechanical properties of C/C-UHTC composites have been reported extensively [26][27][28][29][30][31][32][33], the performance discrepancy of C/C-UHTC composites in two directions are rarely mentioned. The different architecture and fiber-oriented direction in the preform will bring anisotropic ablation and mechanical properties.…”

Section: Introductionmentioning

confidence: 97%

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Effect of fiber-oriented direction on mechanical and ablative performance of C/C-HfC-ZrC-SiC composites

Yang

et al. 2020

Journal of Asian Ceramic Societies

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Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 97%

Effect of fiber-oriented direction on mechanical and ablative performance of C/C-HfC-ZrC-SiC composites

Yang

et al. 2020

Journal of Asian Ceramic Societies

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“…To distinguish the two systems, the former is referred to as HVSPS. A dynamic support of samples with three-dimensional (3D) position and rotation control with capacity to process eight samples simultaneously was used (Miranda et al, 2017, Cividanes et al, 2010, Li et al, 2016.…”

Section: Methodsmentioning

confidence: 99%

Analysis of mullite ablative properties simulated in hypersonic plasma wind tunnel / Análise das propriedades ablativas da mulita simuladas em túnel de vento plasma hipersónico

Rita¹,

Miranda²,

Prado³

et al. 2021

BJDV

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Mullite is a ceramic composed of silicon oxide and aluminum used in various technological applications due to its physical and chemical properties, such as: Low thermal expansion, high thermal stability, low density, low thermal conductivity, good mechanical resistance and creep resistance, good stability in severe chemical environments, among other properties [1]. The supersonic plasma wind tunnel was optimized to investigate the ablative properties of the ceramic composite -Mullite (3 2 3 . 2 2 ) deposited by the plasma spray process on Carbon -Carbon Substrate (C/C). The tests were performed at low pressure in a reactive air plasma using a DC nontransferred arc plasma torch with enthalpies of 7.2MJ / kg at 18.5MJ / kg and heat fluxes of 0.52 MW/m2 to 2.2 MW/m2 (Fig. 1). The specific mass loss rate of the coated Mullite on the (C/C) was evaluated as a function of the exposure time and the heat flow. Microstructural and chemical analysis of the (C/C) substrate of the coated mullite before and after the ablation process through SEM / EDS were also performed. The mullite used in this experiment was processed by the Sol-gel method developed in the materials processing laboratory (PLASMAT-ITA), that is, a process involving a solution that passes through a transition called sol-gel and becomes gel by the and the basic objective of this technique is the preparation of a homogeneous precursor solution from which a semi -rigid gel with level of atomic homogeneity [1]. The synthesis of the mullite is obtained from the mixture in sol-gel of materials that present in its composition ( 2 3 ). From the synthesis of the Mullite Sol-gel, it was inserted in a Plasma Spray process developed in the Thermal Plasma Laboratory (PLASMAT-ITA), where it was processed the coating of the Mullite in Carbon/Carbon substrate creating a layer of thermal protection on the substrate. The analysis of the obtained results showed that the adhesion of the mullite is directly related to the exposure time of the substrate (C/C) in the plasma spray process, in the formation of the coating as a protective layer, since the analysis of the rate of mass loss and showed that the mullite deposited on the surface of the (C/C) did not show good efficiency when this protective coating was submitted to the ablation process inside the supersonic plasma wind tunnel.

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“…As a result, the Si with low viscosity preferentially penetrated into the porous S1-B coating, forming a gradient ZrC-SiC coating in the later stage. As the temperature exceeds 1620 • C, according to reactions (4), (5), and (7-9), it is speculated that residual melt contains Si, Zr, and ZrC. The ZrC with high viscosity tends to precipitate on the surface, while the Si with lower viscosity tends to infiltrate into the inner layer.…”

Section: Effect Of Zrc-sic Inner Layer On Microstructure and Ablationmentioning

confidence: 99%

“…Carbon/carbon (C/C) composites are potential candidates for structural materials at elevated temperature aerospace owing to their low-density, high specific strength and outstanding high-temperature properties [1][2][3]. However, C/C composites suffer from serious oxidation failure under an oxidative environment due to their high oxidation sensitivity [4][5][6]. Therefore, it is crucial to prepare coating on C/C composites to improve their ablation resistance in complex high-temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

Surface Optimization of ZrC–SiC Inner Layer to Enhance Ablation Property of SiC/ZrC–SiC Multi-Layer Coating for C/C Composites

Fang

Weng

et al. 2021

Coatings

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A ZrC–SiC inner layer was fabricated on carbon/carbon composites by pack cementation at different temperatures, aiming to prepare a transition layer for subsequent deposition of SiC and ZrC–SiC layer by chemical vapor deposition and plasma spray. Results show that the structure and phase composition of the inner layer significantly affected the interface bonding strength and thermal shock resistance of the multilayer, which played a vital role in resisting ablation. The jagged and porous surface of the inner layer led to forming a root-like pinning interface, generating a sawtooth combination between the layers. Moreover, the inner layer with high SiC content decreased the coefficient of thermal expansion mismatch between the inner and outer layers. Therefore, the enhanced ablation resistance of the optimum coating was attributed to the improved interface bonding strength and thermal shock resistance caused by the ZrC–SiC inner layer with rough and porous surface structure.

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Effect of ZrC–SiC content on microstructure and ablation properties of C/C composites

Cited by 41 publications

References 34 publications

Effect of fiber-oriented direction on mechanical and ablative performance of C/C-HfC-ZrC-SiC composites

Effect of fiber-oriented direction on mechanical and ablative performance of C/C-HfC-ZrC-SiC composites

Analysis of mullite ablative properties simulated in hypersonic plasma wind tunnel / Análise das propriedades ablativas da mulita simuladas em túnel de vento plasma hipersónico

Surface Optimization of ZrC–SiC Inner Layer to Enhance Ablation Property of SiC/ZrC–SiC Multi-Layer Coating for C/C Composites

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