Comparative ablation behaviors of C/SiC-HfC composites prepared by reactive melt infiltration and precursor infiltration and pyrolysis routes

Duan, Liuyang; Zhao, Xing; Wang, Yiguang

doi:10.1016/j.ceramint.2017.08.175

Cited by 51 publications

(19 citation statements)

References 23 publications

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“…A variety of multi‐matrix C/C‐ceramic composites, such as C/C–SiC, C/C–ZrC, C/SiC–ZrB 2 –ZrC, C/C–SiC–ZrB 2 , C/ZrC–SiC, and C/SiC–HfC . have been successfully fabricated using the RMI method.…”

Section: Introductionsupporting

confidence: 56%

C/C–SiC composite fabricated via PCS–Si slurry reactive melt infiltration

Guo

2018

Int J Applied Ceramic Tech

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The slurry reactive melt infiltration (RMI) method was used to overcome the shortcomings of the traditional RMI method utilized in preparing the large‐irregular shaped C/C preform. C/C–SiC composite was successfully fabricated via PCS–Si slurry RMI. Results show that it has a favorable physical bonding between the PCS–Si slurry and the C/C preform. After RMI, most of the Si in the PCS–Si slurry coating infiltrated into the C/C preform, the density of the C/C preform increased from 1.24 to 1.52g cm−3, and the open porosity decreased from 27.22% to 18.04%. SiC was formed on the surface as well as in the pores of the C/C preform. The as‐received C/C–SiC composite showed a pseudo‐ductile fracture behavior with a flexural strength of 76.4MPa. The mass ablation rate of the C/C–SiC composite is 0.34 mg s−1, exhibiting much better ablation resistance than the C/C preform with a mass ablation rate of 1.80 mg s−1.

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Section: Introductionsupporting

confidence: 56%

C/C–SiC composite fabricated via PCS–Si slurry reactive melt infiltration

Guo

2018

Int J Applied Ceramic Tech

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“…Continuous carbon fiber reinforced ultra‐high temperature ceramic composites (C f /UHTCs), such as C f /ZrC, C f /ZrC‐SiC, C f /ZrB 2 ‐ZrC‐SiC, C f /HfC‐SiC etc ., are endowed with excellent mechanical properties, ablation resistance at ultra‐high temperatures, and furthermore, overcome the inherent brittleness and poor thermal shock resistance of bulk UHTCs . Therefore, these materials are considered as the most potential candidates for applications in thermal structures and anti‐ablation components of hypersonic vehicles, such as sharp nose, leading edge, and combustor of solid rocket …”

Section: Introductionmentioning

confidence: 99%

Fabrication and properties of C_f/ZrC‐SiC‐based composites by an improved reactive melt infiltration

Wang

Dong

et al. 2018

J Am Ceram Soc

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C f /ZrC-SiC composites with a density of 2.52 g/cm 3 and a porosity of 1.68% were fabricated via reactive melt infiltration (RMI) of Si into nano-porous C f / ZrC-C preforms. The nano-porous C f /ZrC-C preforms were prepared through a colloid process, with a ZrC "protective coating" formed surrounding the carbon fibers. Consequently, highly dense C f /ZrC-SiC composites without evident fiber/ interphase degradation were obtained. Moreover, abundant needle-shaped ZrSi 2 grains were formed in the composites. Benefiting from this unique microstructure, flexural strength, and elastic modulus of the composites are as high as 380 MPa and 61 GPa, respectively, which are much higher than C f /ZrC-SiC composites prepared by conventional RMI. K E Y W O R D S composites, mechanical properties, reactive melt infiltration, UHTCs, ZrC Emails:

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“…However, the diffusion mechanism of volatiles in ablation process is still not clear, which is related to the microstructures of C/SiC-HfC composites. For the comparative analysis of the diffusion mechanism of different microstructures during ablation, HfC phase used for modification was introduced via precursor infiltration and pyrolysis (PIP) process in this study, because PIP process has advantages such as easy designability of microstructures, low preparation temperature, and high mechanical properties of final composite, and uniform distribution of modified UHTCs [23][24][25]. However, reaction of HfO 2 with carbon was involved in the formation of HfC from the precursor [26], which could lead to the damage of carbon fibers.…”

Section: Introduction mentioning

confidence: 99%

“…The methods used for the evaluation of ablation performance of above mentioned materials mainly include laser beam [27,28], oxy-acetylene flame [17,25], arc-jet [29,30], and plasma wind tunnel [20,31]. Plasma wind tunnel technique offers the advantage of measuring the change of the surface temperature compared to laser beam and oxy-acetylene flame methods.…”

Section: Introduction mentioning

confidence: 99%

Ablation of C/SiC-HfC composite prepared by precursor infiltration and pyrolysis in plasma wind tunnel

Duan

Luo²,

Liu

et al. 2020

J Adv Ceram

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Carbon fiber reinforced silicon carbide-hafnium carbide (C/SiC-HfC) composite was prepared by precursor infiltration and pyrolysis process. Then, ablation behavior of C/SiC-HfC was evaluated in plasma wind tunnel. It was found that oxide layer formed during ablation significantly influenced the surface temperature. Formation of dense HfO 2-SiO 2 layer under low heat flux led to stable surface temperature. Silica (SiO 2) on the surface was gradually consumed when heat flux increased, resulting in conversion of HfO 2-SiO 2 on the surface to HfO 2. Converted HfO 2 with high catalytic coefficient absorbed more energy, causing gradual increase in the surface temperature. Formed oxide layer was destroyed at high heat flux and high stagnation point pressure. After carbon fiber lost the protection of HfO 2-SiO 2 layer, it burned immediately, leading to surface temperature jump.

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Comparative ablation behaviors of C/SiC-HfC composites prepared by reactive melt infiltration and precursor infiltration and pyrolysis routes

Cited by 51 publications

References 23 publications

C/C–SiC composite fabricated via PCS–Si slurry reactive melt infiltration

C/C–SiC composite fabricated via PCS–Si slurry reactive melt infiltration

Fabrication and properties of C_f/ZrC‐SiC‐based composites by an improved reactive melt infiltration

Ablation of C/SiC-HfC composite prepared by precursor infiltration and pyrolysis in plasma wind tunnel

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Comparative ablation behaviors of C/SiC-HfC composites prepared by reactive melt infiltration and precursor infiltration and pyrolysis routes

Cited by 51 publications

References 23 publications

C/C–SiC composite fabricated via PCS–Si slurry reactive melt infiltration

C/C–SiC composite fabricated via PCS–Si slurry reactive melt infiltration

Fabrication and properties of Cf/ZrC‐SiC‐based composites by an improved reactive melt infiltration

Ablation of C/SiC-HfC composite prepared by precursor infiltration and pyrolysis in plasma wind tunnel

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Fabrication and properties of C_f/ZrC‐SiC‐based composites by an improved reactive melt infiltration