Unlock instant, AI-driven research and patent intelligence for your innovation.

High-temperature oxidation-resistant material and method for preparing high-temperature oxidation-resistant coating by using same

A high-temperature anti-oxidation and coating technology, which is applied in the field of high-temperature anti-oxidation materials and the preparation of high-temperature anti-oxidation coatings, can solve problems that cannot meet the application conditions of long-term and long life, and achieve high-temperature mechanical properties and service temperature retention. High, slow down the effect of corrosion rate

Active Publication Date: 2012-05-09
NINGXIA ORIENT TANTALUM IND
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In China, an exploratory experiment has been done on the high-temperature anti-oxidation coating of tantalum-tungsten alloy by vacuum infiltration method (see "Rare Metal Materials and Engineering", Issue 03, 1974), and it has the ability to protect the alloy for a few minutes at 1800-1900 °C , this high-temperature anti-oxidation coating has only a few minutes of protection at high temperatures, and cannot meet the application conditions of long-term and long-life

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
  • High-temperature oxidation-resistant material and method for preparing high-temperature oxidation-resistant coating by using same
  • High-temperature oxidation-resistant material and method for preparing high-temperature oxidation-resistant coating by using same
  • High-temperature oxidation-resistant material and method for preparing high-temperature oxidation-resistant coating by using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] High-temperature anti-oxidation materials contain the following components by weight percentage:

[0019] Ta: 2.9Wt%, W: 7.0Wt%, Cr: 15.2Wt%, Ni: 2.4Wt%, B: 1.5Wt%; NaF: 0.6Wt%, Y: 2.3%Wt%; S: 0.42Wt%, Ge : 1.8Wt%, Ti: 2.7Wt%, Al 2 o 3 : 3.0Wt%, Nb: 2.1Wt%; the balance is Si.

[0020] Make the above-listed components into a powder with a particle size of 450 mesh and put it into a container. Use anhydrous ethanol that is 3.8 times the volume of the aforementioned powder as a carrier, add 2.0% of the mass of the aforementioned powder to mix evenly, and add an additional Polyethylene glycol with a total weight of 0.3% of the powder is used as a binder, and is mixed with the coating powder for grinding, so that the coating powder is evenly mixed. Coat the prepared coating slurry on the tantalum-tungsten alloy parts, the thickness of the coating is controlled at 90 microns, and then at a temperature of 1500°C, a vacuum greater than 1×10 -1 Carry out melting under Pa con...

Embodiment 2

[0028] Take the composite material of the following components

[0029] Ta is 1.5wt%, W is 5.2wt%, Cr is 11.2wt%, Ni is 2.3wt%, B is 1.3wt%, NaF is 0.4wt%, Y is 1.1%wt%, and the balance is Si.

[0030] The above-mentioned composite material is made into a powder with a particle size of 350 mesh and put into a container, using anhydrous ethanol with 2.5 times the volume of the above-mentioned powder as a carrier, adding 1.0% potassium chloride of the above-mentioned powder mass, and mixing evenly, and additionally adding 0.2% of the above-mentioned powder mass The polyethylene glycol is uniformly mixed again to prepare a coating slurry, and then the coating slurry is coated on a tantalum-tungsten alloy substrate, the coating thickness is controlled at 60 microns, at a temperature of 1300 ° C, a vacuum greater than 1 ×10 -1 Melt and burn under Pa conditions, and keep warm for 10 minutes to form a high-temperature anti-oxidation coating.

Embodiment 3

[0032] Take the composite material of the following components

[0033] Ta is 4.8wt%, W is 8.7wt%, Cr is 15.4wt%, Ni is 5.7wt%, B is 1.6wt%, NaF is 0.8wt%, Y is 2.3%wt%, and the balance is Si.

[0034] The above-mentioned composite material is made into a powder with a particle size of 550 mesh and put into a container, using absolute ethanol with 5 times the volume of the aforementioned powder as a carrier, adding 3.0% of the aforementioned powder mass of sodium chloride and mixing evenly, and additionally adding 0.4% of the aforementioned powder mass The polyethylene glycol is uniformly mixed again to prepare a coating slurry, and then the coating slurry is coated on a tantalum-tungsten alloy substrate, the coating thickness is controlled at 120 microns, at a temperature of 1550 ° C, a vacuum greater than 1 ×10 -1 Melt and burn under Pa conditions, and keep warm for 30 minutes to form a high-temperature anti-oxidation coating.

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
coating thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to high-temperature resistant infusible materials normally applied to fields of aerospace, weaponry, atom energy and chemical industry, in particular to a high-temperature oxidation-resistant material and a method for preparing a high-temperature oxidation-resistant coating by using the same. The high-temperature oxidation-resistant material is characterized by comprising the following components in percentage by weight: 1.5-4.8 percent of Ta, 5.2-8.7 percent of W, 11.2-15.4 percent of Cr, 2.3-5.7 percent of Ni, 1.3-1.6 percent of B, 0.4-0.8 percent of NaF, 1.1-2.3 percent of Y and the balance of Si. The invention discloses the high-temperature oxidation-resistant material and the high-temperature oxidation-resistant coating prepared by using the same. After being processed on the surface of tantalum tungsten alloys, the coating can protect the basal bodies of the tantalum tungsten alloys from suffering high-temperature corrosion or slowing corrosion without changing the components of the basal bodies of the alloys, thereby reserving the high-temperature mechanical property of the alloys to the maximum extent, prolonging the service life of the coating and using the coating at high temperature.

Description

technical field [0001] The invention relates to a high-temperature-resistant refractory material commonly used in the fields of aerospace, weapon equipment, atomic energy and chemical industry, especially a high-temperature anti-oxidation material and a method for preparing a high-temperature anti-oxidation coating therefrom. Background technique [0002] Tantalum-tungsten alloy has high high temperature strength, good ductility, weldability and excellent corrosion resistance, suitable for high temperature, high pressure, corrosion resistance and other working environments, widely used in chemical industry, aerospace, atomic energy industry and high temperature technology It is a very important engineering and functional material. Although tantalum-tungsten alloy has excellent high-temperature mechanical properties, its high-temperature oxidation resistance in the atmosphere is relatively poor. At 300°C, tantalum-tungsten alloy will oxidize. The higher the temperature, the m...

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 Patents(China)
IPC IPC(8): C23C24/10
Inventor 周小军赵刚王秋迎赵兵李桂鹏赵红运同磊王莉王立斐
Owner NINGXIA ORIENT TANTALUM IND