A stacked structure c/c-sic-zrb 2 Composite material and its preparation method

A technology of c-sic-zrb2, composite material, applied in the field of laminated structure C/C-SiC-ZrB2 composite material and its preparation, can solve the problem of the increase of the overall density of the material, the limited contribution of the ablation performance, and the increase of the weight of the thermal protection system and other problems, to achieve the effect of improving ultra-high temperature oxidation resistance and improving ultra-high temperature structural strength

Active Publication Date: 2020-10-30
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the introduction of UHTC will increase the overall density of the material and increase the weight of the thermal protection system, while the ablation of the material only occurs on the surface, and the ultra-high temperature ceramics introduced inside have limited contribution to the ablation performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A stacked structure c/c-sic-zrb <sub>2</sub> Composite material and its preparation method
  • A stacked structure c/c-sic-zrb <sub>2</sub> Composite material and its preparation method
  • A stacked structure c/c-sic-zrb <sub>2</sub> Composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Choose 380×80×10mm, the density is 0.5g / cm 3 The 2D needle punched carbon fiber preform was prepared; the pyrolytic carbon interface layer was prepared by ICVI process, the temperature was 900 °C, and the argon gas flow was 0.2 m 3 / h, propane 0.15m 3 / h, the deposition time was 5 hours; the E-CVI process was used to prepare the C / C composite material with dense center and porous on both sides, the temperature was 700-1000 °C, the argon:propane flow ratio was 2:1, and the deposition time was 7 hours; E-CVI process to deposit SiC substrate, pass hydrogen, argon and trichloromethylsilane into E-CVI furnace, the volume ratio is 5:5:1, the temperature is 700-1000℃, and the required gradient structure is obtained by deposition for 15 hours C / C-SiC composite material; ultrasonic cleaning after CNC machining; introduction of ZrB by PIP process 2 -SiC ultra-high temperature ceramic phase, after 2 cycles of immersion and cracking, the specific process parameters are: vacuum de...

Embodiment 2

[0034] Using 380×80×14mm, the density is 0.51g / cm 3 The 2D needle-punched carbon fiber was obtained; the pyrolytic carbon interface layer was prepared by ICVI process, the temperature was 900 °C, and the argon gas flow was 0.2 m 3 / h, propane 0.15m 3 / h, deposition time is 6 hours; C / C gradient material is prepared by E-CVI process, temperature is 700-1000 °C, argon:propane flow ratio is 2:1, deposition time is 10 hours; SiC substrate is deposited by E-CVI process , pass hydrogen, argon and trichloromethylsilane into the E-CVI furnace, the volume ratio is 5:4:1, the temperature is 700-1000 ° C, and the composite material with the required laminated structure is obtained by deposition for 28 hours; CNC machining is adopted After molding, ultrasonic cleaning; introduction of ZrB by PIP process 2 Ultra-high temperature ceramic phase, after 3 cycles of immersion and cracking, the specific process parameters are: vacuum degree -0.1MPa, immersion pressure 6MPa, curing temperature ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a laminated C / S-SiC-ZrB2 composite material and a preparation method thereof, belonging to the technical field of ceramic-base composite materials. The composite material is ofa various-component laminated integral structure, and C / C, gradient C / C-SiC, a C / SiC-ZrB2 composite material and an SiC coating layer are sequentially and symmetrically distributed from center to twosides; by virtue of the distribution of carbon and an SiC matrix in the center, the mechanical property is improved, and the density is reduced; and by virtue of the enrichment of ZrB2 on an outer layer, super-high temperature ablation resistance is realized. According to the preparation method, a C / C layer and a C / C-SiC layer can be prepared within 20-40 hours, and a large number of pores are remained in the surface layer of a carbon fiber preform, so that the ZrB2-SiC super-high temperature ceramic can be introduced in a subsequent precursor dipping splitting process. According to the design of the material, the improvement of the comprehensive properties such as dynamics, ablation, oxidation and lightness are adequately considered, and the preparation cycle is greatly shortened; and zero ablation of the material under an electric arc wind tunnel examining material at 2100 DEG C is realized.

Description

Technical field: [0001] The invention relates to the technical field of ceramic matrix composite materials, in particular to a laminated structure C / C-SiC-ZrB 2 Composite materials and methods of making the same. Background technique: [0002] C / C and coatings, and C / SiC composites have properties such as high temperature resistance, low expansion, high specific strength, low density, and ablation resistance. As thermal protection materials, they are widely used in nose cones, wing leading edges, control rudders, etc. in the thermal protection system of the aircraft. However, as the flight speed of aircraft is getting faster and faster, C / C, coating and C / SiC can no longer meet the long-term use requirements in ultra-high temperature aerobic environment, and it is urgent to break through the long-term thermal protection technology above 1650 °C. [0003] Ultra-high-temperature ceramic (UHTC) generally has a melting point above 3000°C and has excellent anti-oxidation and an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): C04B41/87C04B35/83C04B35/571C04B35/58
CPCC04B35/571C04B35/58078C04B35/83C04B41/009C04B41/5059C04B41/4531
Inventor汤素芳庞生洋胡成龙杨鸷
OwnerINST OF METAL RESEARCH - CHINESE ACAD OF SCI