Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi<sub>2</sub>–Si

Jiang, Tianxing; Zeng, Yi; Xiong, Xiang; Ye, Ziming; Lun, Huilin; Chen, Shiyan; Hu, Jinrun; Ge, Yang; Gao, Sen

doi:10.1039/d1ra01971f

Cited by 4 publications

(1 citation statement)

References 23 publications

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“…Therefore, it is essential to develop low-melting alloys for the RMI process. Meanwhile, the decrease in temperature of the RMI process must consequently lead to a decrease in the reaction rate for the formation of SiC, which can result in more residual alloys in the composite. , The intrinsic oxidation resistance of the composites will therefore be greatly affected if the alloys have an inferior oxidation resistance. Therefore, the alloys used in the RMI process should also have an excellent oxidation resistance.…”

Section: Introductionmentioning

confidence: 99%

Oxidation Behavior of the Si-B-X (X = Mo, Cr, or Ti) Alloys in the Temperature Range of 1000–1400 °C

Zeng

Xiong

et al. 2022

ACS Omega

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Low-melting-point silicon–boron system alloys are promising for low-temperature reactive melt infiltration to reduce high-temperature damage to silicon carbide fibers during the densification of SiC/SiC composites. Meanwhile, the oxidation resistance of the alloys will have a large impact on the intrinsic oxidation resistance of the composite. Herein, three alloys, Si-14.88B-7Mo, Si-14.88B-7Ti, and Si-14.88B-7Cr, were fabricated to investigate the oxidation behavior in air at 1000–1400 °C. The results showed that the oxidation weight gains of the Si-B-Mo alloy after oxidation at 1400 °C for 100 h were 0.9 mg/cm –2 , which were only 50 and 1.5% of those of Si-B-Ti and Si-B-Cr alloys, respectively. The excellent oxidation resistance of Si-B-Mo alloys at 1000–1400 °C was attributed to the formation of glassy-surface layers and the dense internal oxide layer. The dense oxide layer and the low solubility of Mo ions in SiO 2 inhibit the volatilization of MoO 3 and the oxidation reaction, reducing the oxidation rate of the Si-B-Mo alloy. The difference in the coefficients of thermal expansion for SiO 2 and TiO 2 led to penetrating cracks in the oxide layer of the Si-B-Ti alloy during cooling, thereby reducing the oxidation resistance. In addition, the rate of volatilization of Cr 2 O 3 as CrO 3 in an oxidation atmosphere above 1200 °C increased significantly in the Si-B-Cr alloy. The simultaneous volatilization of B 2 O 3 and CrO 3 resulted in the formation of loose oxide layers in the CrB 2 region of the Si-B-Cr alloy, leading to severe oxidation.

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Section: Introductionmentioning

confidence: 99%

Oxidation Behavior of the Si-B-X (X = Mo, Cr, or Ti) Alloys in the Temperature Range of 1000–1400 °C

Zeng

Xiong

et al. 2022

ACS Omega

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Structural optimization and air-plasma ablation behaviors of C/C-SiC-(ZrxHf1−x)C composites prepared by reactive melt infiltration method

et al. 2023

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Microstructure and properties of C/C and C/SiC composites brazed by reactive infiltration of Si Zr filler alloy

He,

Xu,

Sun

et al. 2024

Materials Characterization

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Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi₂–Si

Abstract: C/C–SiC composites containing ZrSi2–Si were prepared using low-temperature reactive melt infiltration (LRMI) at 1400 °C, and the thermal chemical ablation of the composites was examined.

Cited by 4 publications

References 23 publications

Oxidation Behavior of the Si-B-X (X = Mo, Cr, or Ti) Alloys in the Temperature Range of 1000–1400 °C

Oxidation Behavior of the Si-B-X (X = Mo, Cr, or Ti) Alloys in the Temperature Range of 1000–1400 °C

Structural optimization and air-plasma ablation behaviors of C/C-SiC-(ZrxHf1−x)C composites prepared by reactive melt infiltration method

Microstructure and properties of C/C and C/SiC composites brazed by reactive infiltration of Si Zr filler alloy

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Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi2–Si

Abstract: C/C–SiC composites containing ZrSi2–Si were prepared using low-temperature reactive melt infiltration (LRMI) at 1400 °C, and the thermal chemical ablation of the composites was examined.

Cited by 4 publications

References 23 publications

Oxidation Behavior of the Si-B-X (X = Mo, Cr, or Ti) Alloys in the Temperature Range of 1000–1400 °C

Oxidation Behavior of the Si-B-X (X = Mo, Cr, or Ti) Alloys in the Temperature Range of 1000–1400 °C

Structural optimization and air-plasma ablation behaviors of C/C-SiC-(ZrxHf1−x)C composites prepared by reactive melt infiltration method

Microstructure and properties of C/C and C/SiC composites brazed by reactive infiltration of Si Zr filler alloy

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Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi₂–Si