Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of C/C-SiC-MoSi2 ceramic-based composite material

A technology of c-sic-mosi2 and composite materials, which is applied in the field of preparation of C/C-SiC-MoSi2 ceramic matrix composite materials, can solve the problem of decreased strength of fiber reinforcements, low mechanical properties of composite materials, and low speed of matrix densification, etc. problem, to achieve the effect of improving bond strength, short reaction time, and easy to obtain

Active Publication Date: 2016-01-13
浙江领崎科技有限责任公司
View PDF2 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Precursor impregnation cracking method has a long cycle of multiple impregnation processes, which is prone to shrinkage cracks and high cost (2009)3438–3443.], the matrix densification rate of the composite material prepared by chemical vapor infiltration method is low, the production cycle is long, and the stability of the composite material is low [J.Yin, H.B. Zhang, X. Xiong, J. Zuo, H.J. Tao, Ablation properties of C / C–SiC composite tested on an archeater, Solid State Sci.13 (2011) 2055–2059.], the composite material prepared by fusion siliconizing method is easy to reduce the strength of fiber reinforcement, and the cost is too high [SeYoungKim, etal.Wear-mechanicalpropertiesoffiller- addedliquidsiliconinfiltrationC / C–SiCcompositesMaterialsandDesign[J],44(2013)107–113.], and the composite material prepared by reactive melt impregnation method has great damage to the carbon fiber, resulting in low mechanical properties and poor fracture toughness of the composite material[Z.Q.Li, H.J.Li, S.Y.Zhang, J.Wang, W.Li, F.J.Sun, Effectofreactionmeltinfiltrationtemperatureontheablationpropertiesof2DC / C–SiC–ZrCcomposites, Corros.Sci.58(2012)12–19.]
And the method that adopts vacuum filtration-homogeneous hydrothermal method to prepare carbon / carbon-high temperature resistant ceramic composite material has not yet been reported

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
  • Preparation method of C/C-SiC-MoSi2 ceramic-based composite material
  • Preparation method of C/C-SiC-MoSi2 ceramic-based composite material
  • Preparation method of C/C-SiC-MoSi2 ceramic-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1) Choose commercially available molybdenum disilicide powder (after 24 hours of dry ball milling, the average particle size is controlled at 1-3 μm), silicon carbide powder (after dry ball milling for 15 hours, the average particle size is controlled at 0.5-1 μm), isopropyl Alcohol (purity ≥ 99.8%), glucose (purity ≥ 99%) as raw materials;

[0038] 2) Disperse silicon carbide powder and molybdenum disilicide powder in isopropanol respectively to obtain mixture A and mixture B. The concentration of silicon carbide powder in mixture A is 15 g / L, and the concentration of molybdenum disilicide in mixture B is 35 g / L. L. The mixture A and the mixture B were respectively vibrated by ultrasonic (ultrasonic power: 800W) for 30 minutes, and then magnetically stirred for 2 hours to obtain the suspension A and the suspension B;

[0039] 3) Make the density 0.2g / cm 3 The carbon fiber three-dimensional fabric (manufacturer: Jiangsu Tianniao High-tech Co., Ltd.) is cut into discs ...

Embodiment 2

[0048] 1) Choose commercially available molybdenum disilicide powder (after 24 hours of dry ball milling, the average particle size is controlled at 1-3 μm), silicon carbide powder (after dry ball milling for 15 hours, the average particle size is controlled at 0.5-1 μm), isopropyl Alcohol (purity ≥ 99.8%), glucose (purity ≥ 99%) as raw materials;

[0049] 2) Disperse silicon carbide powder and molybdenum disilicide powder in isopropanol respectively to obtain mixture A and mixture B. The concentration of silicon carbide powder in mixture A is 20 g / L, and the concentration of molybdenum disilicide in mixture B is 40 g / L. L. The mixture A and the mixture B were ultrasonically oscillated for 40 minutes respectively, and then magnetically stirred for 3 hours to obtain the suspension A and the suspension B;

[0050] 3) Make the density 0.2g / cm 3 The carbon fiber three-dimensional fabric (manufacturer: Jiangsu Tianniao High-tech Co., Ltd.) is cut into discs with a diameter of 4cm...

Embodiment 3

[0058] 1) Choose commercially available molybdenum disilicide powder (after 24 hours of dry ball milling, the average particle size is controlled at 1-3 μm), silicon carbide powder (after dry ball milling for 15 hours, the average particle size is controlled at 0.5-1 μm), isopropyl Alcohol (purity ≥ 99.8%), glucose (purity ≥ 99%) as raw materials;

[0059] 2) Disperse silicon carbide powder and molybdenum disilicide powder in isopropanol respectively to obtain mixture A and mixture B, the concentration of silicon carbide powder in mixture A is 25g / L, and the concentration of molybdenum disilicide in mixture B is 45g / L L. The mixture A and mixture B were ultrasonically oscillated for 30-60 minutes respectively, and then magnetically stirred for 2-4 hours to obtain suspension A and suspension B;

[0060] 3) Make the density 0.2g / cm 3 The carbon fiber three-dimensional fabric is cut into discs with a diameter of 3cm and a thickness of 1cm;

[0061] 4) Put the disc in 0.75mol / L...

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
particle sizeaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

A preparation method of a C / C-SiC-MoSi2 ceramic-based composite material includes the following steps: 1) dispersing silicon carbide powder and molybdenum disilicide powder in isopropyl alcohol, and performing ultrasound vibration and stirring to obtain a suspension liquid A and a suspension liquid B: 2) increasing the density of a low-density carbon fiber stereo fabric in a manner of hydrothermal permeation of glucose, and placing the fabric in a suction filtration device having a glass sand core; 3) pouring the suspension liquid A and the suspension liquid B successively into a suction filtration flat-bottom funnel to enable the suspension liquids to pass the C / C composite material completely; 4) performing a homogeneous phase hydrothermal reaction until the density is 1.2-1.5 g / cm<3>; and 5) performing thermal treatment to obtain the C / C-SiC-MoSi2 ceramic-based composite material. The composite material is moderated in density, is compact in structure, and is excellent in interface binding between a C / C interface and a SiC interface, the SiC interface and a MoSi2 interface and the C / C interface and the MoSi2 interface. The raw materials are easy to obtain. The preparation method is simple in operation, is low in cost, is environment-friendly and is pollution-free.

Description

technical field [0001] The invention belongs to the technical field of C / C composite materials, and relates to a C / C-SiC-MoSi 2 Preparation method of ceramic matrix composite material. Background technique [0002] Carbon / carbon (C / C) composites are currently the only high-temperature composite materials that can be applied at 2800 °C. Due to their excellent properties, they have broad application prospects in the aerospace field, such as low thermal expansion coefficient, low density, and High temperature, ablation resistance, high strength, high modulus and other excellent properties, especially the excellent properties that the strength and modulus increase with the increase of temperature under the condition of inert atmosphere within 2200 °C. However, C / C composites will be oxidized in an aerobic environment exceeding 370 °C, and the loss of oxidized mass will lead to a decrease in its strength, which limits its application range, especially in high temperature or humi...

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 & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/80C04B35/565C04B35/58
Inventor 曹丽云白喆欧阳海波黄剑锋李翠艳孔新刚
Owner 浙江领崎科技有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com