Simultaneous enhancement of mechanical and ablation properties of C/C composites modified by (Hf-Ta-Zr)C solid solution ceramics

Miao, Qing; Fu, Yanqin; Chen, Hui; Zhang, Jianhua; Zhao, Junhao; Zhang, Yulei

doi:10.1016/j.jeurceramsoc.2023.02.059

Cited by 29 publications

(3 citation statements)

References 47 publications

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“…Carbon-carbon composites (C/C) have been considered as attractive material for high-temperature components owing to its excellent mechanical performance, such as the low density, low coe cient of thermal expansion, and high speci c strength even at elevated temperature above 2000℃ [1][2][3][4][5][6]. Until now, C/C composites have been widely utilized in advanced aero-engine, hypersonic vehicles, solid propellant rocket nozzles, thermonuclear reactors, and automobile breaks [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Brazing of surface modified C/C composites to Ni-based superalloy for high temperature applications

Shen,

Li,

Sheng

et al. 2024

Preprint

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In this paper, brazing of high reliability C/C composites-metal joint for high temperature application was studied. The surface of C/C composites was modified by Cr metallization process and then brazed to Ni-based superalloy by AgPd braze. Alumina block was used as interlayer and a zig-zag interfacial structure was constructed at the composites/braze interface. The results show that, after the metallization process, a strong adhesion reaction layer consisting of Cr carbides was coated on the C/C surface which in turn obviously improved the wettability of braze. The molted braze filled completely into the laser machined holes in C/C substate and well-bonded interfaces and homogeneous Ag(Pd) solution microstructure was obtained in the joint. The strength of joint with C/C metallized at 1100℃ is higher than that of joint with 1300℃. The joints exhibit very high bending strength up to 82 MPa and shear strength up to 54 MPa, respectively. The braze spikes increase the connection area and provide strong pinning effect.

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Section: Introductionmentioning

confidence: 99%

Brazing of surface modified C/C composites to Ni-based superalloy for high temperature applications

Shen,

Li,

Sheng

et al. 2024

Preprint

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“…Therefore, high-speed aircraft's non-ablative thermal protection materials must have excellent mechanical properties, high physical and chemical stability, and very low ablation rate at high temperatures. The materials expected to meet the requirements of thermal protection structural materials for high-temperature resistance mainly include superalloys [4], C/C composites [5], and ultra-high-temperature ceramics [6]. Although superalloys are relatively easy to process and have good thermal shock resistance, metal materials usually have high density and severe creep and oxidation behavior at high temperatures [7].…”

Section: Introductionmentioning

confidence: 99%

Efficient fabrication of light C _f/SiHfBOC composites with excellent thermal shock resistance and ultra-high-temperature ablation up to 1800 °C

Lyu,

Han,

Zhao

et al. 2023

Journal of Advanced Ceramics

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In this paper, a high-yield Hf-modified SiHfBOC ceramic precursor was developed, and a high-pressure assisted impregnation pyrolysis method was proposed to achieve the preparation of 3D PyC-C f /SiHfBOC composites. This high-pressure assisted impregnation method significantly improves impregnation filling effect of the precursor in and between fiber bundles compared to dozens of traditional impregnation cycles. After undergoing just 9 precursor infiltration pyrolysis (PIP) cycles, the composites achieved relative density of approximately 90% and density of 1.64 g/cm 3 . The critical temperature difference of the 3D PyC-C f /SiHfBOC composites after the shock of room temperature (RT)-1000 ℃ is as high as 650 ℃, which is twice that of traditional ceramic materials, showing good thermal shock resistance. Under the effect of Hf modification, a dense HfO 2 -SiO 2 oxide layer (thickness of 93 μm) was formed in situ on the surface of the 3D PyC-C f /SiHfBOC composites, effectively preventing further erosion of the composite matrix by high-temperature oxidation gas. Even in the ultra-high-temperature oxygen-containing environment at 1800 ℃, it still exhibits an excellent non-ablative result (with a linear ablation rate of 0.83×10 −4 mm/s). This work not only enriches the basic research on lightweight ultra-high-temperature ceramic composites converted from Hf ceramic precursors, but also provides strong technical support for their applications in ultra-high-temperature non-ablative thermal protection materials for high-speed aircraft.

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“…Due to the growing contribution of the electronic part to the thermal conductivity, its value increased with the increase of the N content in the ZrC x N y , which ranged from 40-50 W•m −1 •K −1 . As well as being used as protective wear-resistant coatings [10,11], carbonite ceramics are also used to improve the mechanical properties and oxidation resistance of carbon-carbon composites [12].…”

Section: Introductionmentioning

confidence: 99%

Hafnium-Zirconium Carbonitride (Hf,Zr)(C,N) by One Step Mechanically Induced Self-Sustaining Reaction: Powder Synthesis and Spark Plasma Sintering

et al. 2023

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Nanostructured single-phase hafnium-zirconium carbonitride powders were synthesized using a simple and fast mechanochemical synthesis approach. The critical milling duration, after which a (Hf,Zr)(C,N) solid solution formation inside a jar occurred via mechanically induced self-sustained reaction (MSR), was 10 min. After 30 min of treatment, a solid-gas reaction was completed, and as a result, a homogeneous (Hf,Zr)(C,N) powder consisting of 10–500 nm submicron particles was obtained. The phase and structure evolution of the powders after different treatment durations allowed for the establishment of possible reaction mechanisms, which included the formation of Hf/Zr/C-layered composite particles, their interaction via MSR, and further grinding and nitridization. Spark plasma sintering (SPS) was used to produce bulk hafnium-zirconium carbonitride ceramics from nanostructured powder. The sample had higher values of relative density, hardness, and fracture toughness than those for binary compounds of a similar composition.

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Simultaneous enhancement of mechanical and ablation properties of C/C composites modified by (Hf-Ta-Zr)C solid solution ceramics

Cited by 29 publications

References 47 publications

Brazing of surface modified C/C composites to Ni-based superalloy for high temperature applications

Brazing of surface modified C/C composites to Ni-based superalloy for high temperature applications

Efficient fabrication of light C _f/SiHfBOC composites with excellent thermal shock resistance and ultra-high-temperature ablation up to 1800 °C

Hafnium-Zirconium Carbonitride (Hf,Zr)(C,N) by One Step Mechanically Induced Self-Sustaining Reaction: Powder Synthesis and Spark Plasma Sintering

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Simultaneous enhancement of mechanical and ablation properties of C/C composites modified by (Hf-Ta-Zr)C solid solution ceramics

Cited by 29 publications

References 47 publications

Brazing of surface modified C/C composites to Ni-based superalloy for high temperature applications

Brazing of surface modified C/C composites to Ni-based superalloy for high temperature applications

Efficient fabrication of light C f/SiHfBOC composites with excellent thermal shock resistance and ultra-high-temperature ablation up to 1800 °C

Hafnium-Zirconium Carbonitride (Hf,Zr)(C,N) by One Step Mechanically Induced Self-Sustaining Reaction: Powder Synthesis and Spark Plasma Sintering

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Efficient fabrication of light C _f/SiHfBOC composites with excellent thermal shock resistance and ultra-high-temperature ablation up to 1800 °C