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

Preparation method for ZrB2-SiO2 composite high-temperature oxidation resistant coating

A high-temperature anti-oxidation and coating technology, which is applied in the preparation of ZrB2–SiO2 composite high-temperature anti-oxidation coatings and the preparation of high-temperature anti-oxidation coatings on the surface of materials, can solve the problem of poor bonding ability between coatings and base materials and long preparation cycles , high sintering temperature and other problems, to achieve the effect of improving anti-oxidation performance, short preparation cycle and good combination

Active Publication Date: 2014-11-19
SHAANXI UNIV OF SCI & TECH
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the method described in this patent exists in the ZrB prepared 2 Problems such as poor bonding ability between the coating and the base material, high sintering temperature, long preparation cycle, and high cost

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 for ZrB2-SiO2 composite high-temperature oxidation resistant coating
  • Preparation method for ZrB2-SiO2 composite high-temperature oxidation resistant coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] a ZrB 2 – SiO 2 A method for preparing a composite high-temperature anti-oxidation coating, comprising the following steps:

[0027] 1) Use commercially available chemically pure ZrB 2 The powder is subjected to dry ball milling for 6 hours to obtain a powder with an average particle size of 4-5 μm, which is set aside. Select commercially available elemental iodine (purity ≥ 99.7%) and isopropanol (purity ≥ 99.8%) as raw materials.

[0028] 2) Weigh ZrB 2 Powder 1g, pour it into a Erlenmeyer flask, add 45mL isopropanol and stir on a magnetic stirrer for 2h to obtain ZrB 2 Suspension, then add 0.3g of iodine to the suspension, and then put it on a magnetic stirrer and stir for 1h to obtain Suspension A.

[0029] 3) Pour the suspension A into the hydrothermal kettle with a filling degree of 60%; place the SiC–C / C sample on the cathode clamp in the hydrothermal kettle with graphite as the anode, and seal the hydrothermal kettle; The cathode and anode of the hydrother...

Embodiment 2

[0033] a ZrB 2 – SiO 2 A method for preparing a composite high-temperature anti-oxidation coating, comprising the following steps:

[0034] 1) Use commercially available chemically pure ZrB 2 The powder is subjected to dry ball milling for 8 hours to obtain a powder with an average particle size of 3.5-4.5 μm, which is set aside. Select commercially available elemental iodine (purity ≥ 99.7%) and isopropanol (purity ≥ 99.8%) as raw materials.

[0035] 2) Weigh ZrB 2 Powder 2g, pour it into a Erlenmeyer flask, add 300mL isopropanol and stir on a magnetic stirrer for 3h to obtain ZrB 2 Suspension, then add 1g of iodine to the suspension, and then stir on a magnetic stirrer for 2h to obtain suspension A.

[0036] 3) Pour the suspension A into the hydrothermal kettle with a filling degree of 60%; place the SiC–C / C sample on the cathode clamp in the hydrothermal kettle with graphite as the anode, and seal the hydrothermal kettle; The cathode and anode of the hydrothermal kett...

Embodiment 3

[0040] a ZrB 2 – SiO 2 A method for preparing a composite high-temperature anti-oxidation coating, comprising the following steps:

[0041] 1) Use commercially available chemically pure ZrB 2 The powder is subjected to dry ball milling for 10 hours to obtain a powder with an average particle size of 2.5-3.5 μm, which is set aside. Select commercially available elemental iodine (purity ≥ 99.7%) and isopropanol (purity ≥ 99.8%) as raw materials.

[0042] 2) Weigh ZrB 2 Pour 3g of powder into a conical flask, add 190mL of isopropanol and stir on a magnetic stirrer for 4h to obtain ZrB 2 Suspension, then add 2g of iodine to the suspension, and then put it on a magnetic stirrer and stir for 3h to obtain Suspension A.

[0043] 3) Pour the suspension A into the hydrothermal kettle with a filling degree of 60%; place the SiC–C / C sample on the cathode clamp in the hydrothermal kettle with graphite as the anode, and seal the hydrothermal kettle; The cathode and anode of the hydrot...

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
particle sizeaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a ZrB2-SiO2 composite high-temperature oxidation resistant coating, and belongs to the technical field of a ceramic coating. The adopted technical scheme is that ZrB2 powder is added into isopropanol, an iodine is added, and a suspension liquid is obtained through uniformly stirring; the suspension liquid is poured into a hydrothermal kettle, a SiC-C / C sample is placed on a cathode clamp in the hydrothermal kettle to be subjected to the pulsed arc discharge deposition, and a ZrB2 porous skeleton layer is prepared on the surface of the SiC-C / C sample; the SiC-C / C sample with the ZrB2 porous skeleton layer is infiltrated in a silica sol solution and is placed in a drying oven to be dried, so that the ZrB2-SiO2 composite high-temperature oxidation resistant coating is prepared on the surface of the SiC-C / C sample. The preparation method has the advantages that the cost is low, the operation is simple, the preparation cycle is short; in addition, the ZrB2-SiO2 composite coating prepared by the invention has good thermal shock resistance, is compact, can be well bonded with a base body, and is not needed to be sintered.

Description

technical field [0001] The invention belongs to the technical field of preparation of ceramic coatings, and relates to a preparation method of a high-temperature anti-oxidation coating on the surface of a material, in particular to a ZrB 2 – SiO 2 A method for preparing a composite high-temperature anti-oxidation coating. Background technique [0002] Zirconium diboride (ZrB 2 ) has the characteristics of high melting point, high hardness, excellent thermal conductivity and electrical conductivity, good thermal shock resistance, etc., and has been successfully used as a high-temperature oxidation-resistant ablation coating on the surface of carbon / carbon composite materials. Studies have shown that single-phase ZrB 2 A protective film will be formed in a high-temperature oxidizing environment, and the liquid B formed at 1100°C 2 o 3 Glass has played a good anti-oxidation effect. However, above 1200°C, B 2 o 3 Rapid evaporation, gaseous substances in the product (B 2...

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): C04B41/85
Inventor 李翠艳欧阳海波黄剑锋曹丽云费杰孔新刚卢靖
Owner SHAANXI UNIV OF SCI & TECH
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