Supercharge Your Innovation With Domain-Expert AI Agents!

Method for preparing high-density ZrB2-ZrSi2-Cf ultra-high temperature ceramic composite material at low temperature

A technology of zrb2-zrsi2-cf, ultra-high temperature ceramics, applied in the field of material science, can solve problems such as difficult sintering and densification, and achieve the effects of promoting densification, increasing sintering driving force, and wide applicability

Inactive Publication Date: 2018-07-20
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the invention is to provide a low-temperature preparation of high-density ZrB 2 -ZrSi 2 -C f A method for ultra-high temperature ceramic composite materials to solve the problem that carbon fiber toughened ultra-high temperature ceramic composite materials are difficult to sinter and densify in the prior art

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
  • Method for preparing high-density ZrB2-ZrSi2-Cf ultra-high temperature ceramic composite material at low temperature
  • Method for preparing high-density ZrB2-ZrSi2-Cf ultra-high temperature ceramic composite material at low temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A Low-Temperature Preparation of Highly Dense ZrB 2 -ZrSi 2 -C f The method for ultra-high temperature ceramic composite materials, the specific steps are as follows:

[0023] Step 1. Ingredients: Cut continuous carbon fiber into chopped carbon fiber with a length of 1-3 mm, and weigh ZrB in proportion 2 , ZrSi 2 powder and chopped carbon fiber, and added to absolute ethanol, ultrasonic treatment for 30min. Among them, ZrB 2 The average particle size of the powder is 200nm, and the volume fraction is 60%,; ZrSi 2 The average particle size of the powder is 100nm, and the volume fraction is 10%; the volume fraction of the chopped carbon fiber is 30%.

[0024] Step 2, ball milling: put the slurry obtained in step 1 into a ball mill tank for mechanical ball milling, the ball milling medium is absolute ethanol, the balls are made of tungsten carbide, the ball milling time is 15 hours, and the ball milling speed is 250r / min.

[0025] Step 3. Drying: Pour the ball-mille...

Embodiment 2

[0029] A Low-Temperature Preparation of Highly Dense ZrB 2 -ZrSi 2 -C f The method for ultra-high temperature ceramic composite materials, the specific steps are as follows:

[0030] Step 1. Ingredients: Cut continuous carbon fiber into chopped carbon fiber with a length of 1-3 mm, and weigh ZrB in proportion 2 , ZrSi 2 powder and chopped carbon fiber, and added to absolute ethanol, ultrasonic treatment for 20min. Among them, ZrB 2 The average particle size of the powder is 150nm, and the volume fraction is 60%,; ZrSi 2 The average particle size of the powder is 200nm, and the volume fraction is 20%; the volume fraction of the chopped carbon fiber is 20%.

[0031] Step 2, ball milling: put the slurry obtained in step 1 into a ball mill tank for mechanical ball milling, the ball milling medium is absolute ethanol, the balls are made of tungsten carbide, the ball milling time is 12 hours, and the ball milling speed is 220r / min.

[0032] Step 3. Drying: Pour the ball-mille...

Embodiment 3

[0036] A Low-Temperature Preparation of Highly Dense ZrB 2 -ZrSi 2 -C f The method for ultra-high temperature ceramic composite materials, the specific steps are as follows:

[0037]Step 1. Ingredients: Cut continuous carbon fiber into chopped carbon fiber with a length of 1-3 mm, and weigh ZrB in proportion 2 , ZrSi 2 Powder and chopped carbon fiber, and added to absolute ethanol, ultrasonic treatment for 35min. Among them, ZrB 2 The average particle size of the powder is 100nm, and the volume fraction is 60%,; ZrSi 2 The average particle size of the powder is 200nm, and the volume fraction is 15%; the volume fraction of the chopped carbon fiber is 25%.

[0038] Step 2, ball milling: put the slurry obtained in step 1 into a ball mill tank for mechanical ball milling, the ball milling medium is absolute ethanol, the balls are made of tungsten carbide, the ball milling time is 15 hours, and the ball milling speed is 240r / min.

[0039] Step 3. Drying: Pour the ball-milled...

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

No PUM Login to View More

Abstract

The invention discloses a method for preparing high-density ZrB2-ZrSi2-Cf ultra-high temperature ceramic composite material at low temperature. The method comprises the following steps: step 1 of batching: cutting continuous carbon fiber into chopped carbon fiber with a length of 1 to 3 mm, weighing ZrB2, ZrSi2 powder and the chopped carbon fiber, and adding the fibers into absolute ethanol for ultrasonic treatment; step 2 of ball milling: placing slurry obtained in step 1 in a ball milling tank for mechanical ball milling; step 3 of drying: pouring the slurry obtained after the ball milling in step 2 into a vacuum rotating drying instrument for drying, to obtain evenly mixed complex phase powder; step 4 of discharge plasma sintering: placing the powder obtained in step 3 into a graphite die, using a spark plasma sintering system for sintering, cooling to room temperature, and obtaining the ZrB2-ZrSi2-Cf ultra-high temperature ceramic composite material. According to the method, the problem that it is difficult to densify the carbon fiber toughened ultra-high temperature ceramic composite material is solved.

Description

technical field [0001] The invention relates to the field of material science and technology, in particular to a method for preparing high-density ZrB 2 -ZrSi 2 -C f Methods for ultra-high temperature ceramic composites. Background technique [0002] Zirconium boride (ZrB 2 ) ceramics have high melting point, low density, high thermal conductivity and moderate thermal expansion coefficient. ZrB 2 Ceramics have strong covalent bonding and low atomic self-diffusion coefficient, so they often need to be sintered and densified under high temperature and pressure. In addition, ZrB 2 The inherent intrinsic brittleness, low fracture toughness and poor thermal shock resistance of ceramics largely limit the engineering applications of such materials. To address ZrB 2 To address the brittleness of ceramics, improve its fracture toughness and thermal shock resistance, carbon fiber is introduced into ZrB as a toughening phase 2 in ceramics. However, the introduction of carbon ...

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
IPC IPC(8): C04B35/80C04B35/58C04B35/626C04B35/64
CPCC04B35/58078C04B35/62605C04B35/64C04B35/806C04B2235/3891C04B2235/422C04B2235/6562C04B2235/6567
Inventor 桂凯旋刘方瑜黄仲佳刘明朗王刚朱协彬
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com