High-temperature protective coating for engine jet pipe of aerospace vehicle as well as preparation method and application of high-temperature protective coating
A technology for engine nozzles and aerospace vehicles, which is applied in the aerospace field, can solve the problems that aluminides, chromes and silicides are difficult to meet thermal protection requirements, and achieve the effect of improving working life and working reliability.
Active Publication Date: 2022-03-15
北京神箭空天科技有限公司
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, under the ultra-high temperature conditions in this wide temperature range, traditional aluminides, chromium compounds and silicides are difficult to meet the thermal protection requirements.
In the wide temperature range (25-1700 ℃) high-speed airflow environment, there is still a big gap between the service performance of the existing coating and the actual application.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] The present invention will be further described below in conjunction with the accompanying drawings and examples, and the contents of the examples are not intended to limit the protection scope of the present invention.
[0032] Aiming at the urgent demand for the wide temperature range, ultra-high temperature and long-life protective coating for thermal protection components of aerospace vehicles, and the key issues involved in the preparation and application of the new generation of niobium alloy substrate surface environment adaptive protective coating, the present invention designs An anti-oxidation and erosion-resistant coating material with self-healing properties in a wide temperature range (room temperature-1700°C) was constructed, and the optimal process conditions for obtaining the coating were proposed to provide a wide temperature range for its application in the aerospace field. The domain environment adaptive protective coating has laid the foundation.
[...
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
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to an aerospace vehicle engine jet pipe high-temperature protective coating and a preparation method and application thereof.The high-temperature protective coating comprises a multi-phase composite transition buffer layer (1), a middle supporting layer (2) located on the multi-phase composite transition buffer layer (1) and a strengthening body layer (3) located on the middle supporting layer (2), the multi-phase composite transition buffer layer (1) is made of (Nb, W, Mo, Zr and Ti) 5Si3, and the strengthening body layer (3) is made of (Si, W, Mo, Zr and Ti) 5Si3. The middle supporting layer (2) is made of boron element modified (Nb, Ti and Cr) Si2, and the reinforced main body layer (3) is made of hafnium, zirconium and boron element modified (Nb, Ti and Cr) Si2. The engine nozzle can stably work for a long time under the condition of 25-1700 DEG C, the service life of an engine is prolonged, and the working reliability of the engine is improved.
Description
technical field [0001] The invention belongs to the technical field of aerospace, and relates to a coating of an aerospace engine nozzle, in particular to a high-temperature protective coating on the surface of an aerospace engine nozzle and its preparation method and application, in particular to a two-component liquid rocket engine The high-temperature protective coating with wide temperature margin, ultra-high temperature and long service life on the surface of the nozzle and its preparation method can be applied to the engines of aerospace vehicles. Background technique [0002] The aerospace plane is an aircraft highly integrated with aviation technology and aerospace technology. It will push space development to a new stage. The flight range of the aerospace aircraft is from the atmosphere to the outside of the atmosphere, and the flight speed is from zero to the hypersonic speed of more than ten Machs. Such a large span and changes in the working environment make its ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/08F02K9/97
CPCC23C24/08F02K9/974
Inventor 李海庆
Owner 北京神箭空天科技有限公司