Hafnium diboride-tantalum disilicide composite coating and preparation method thereof
A technology of tantalum disilicide and hafnium diboride, which is applied in the direction of coating, metal material coating process, fusion spraying, etc., can solve coating pores, poor high temperature oxidation resistance, and difficulty in meeting the requirements of aircraft hot-end parts and other problems, achieve the effect of low porosity and improve high temperature protection ability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0028] The invention provides a method for preparing a hafnium diboride-tantalum disilicide composite coating, comprising the following steps:
[0029] Preheating the substrate, spraying hafnium diboride-tantalum disilicide composite powder with atmospheric plasma onto the surface of the preheated substrate to obtain a hafnium diboride-tantalum disilicide composite coating;
[0030] The hafnium diboride-tantalum disilicide composite powder is in a molten eutectic state, and its components include hafnium diboride and tantalum disilicide, and the mass ratio of the hafnium diboride to tantalum disilicide is 2-11:1.
[0031] In the present invention, the substrate is preheated first. In the present invention, the matrix is preferably a matrix that requires high-temperature anti-oxidation protection on the surface; further, the matrix is preferably a carbon fiber reinforced carbon matrix composite (C / C) or superalloy.
[0032] Before the preheating, the present invention pref...
Embodiment 1
[0078] (1) Add 739.9g of hafnium diboride, 260.1g of tantalum disilicide, 5g of PVA and 1500g of deionized water into the ball mill tank with a ball-to-material ratio of 4:1, and ball mill for 3 hours at 250r / min to mix the ingredients evenly , to obtain a suspension of precursor powder;
[0079] (2) Transfer the suspension obtained in step (1) to a spray drying granulation tower for agglomeration and granulation. The granulated powder is first dried in an oven at 80°C for 30 hours, and then passed through a test sieve to obtain granules. HfB with diameter 2 -TaSi 2 Agglomerated powder (HfB 2 with TaSi 2 The volume ratio is 7:3);
[0080] Among them, the spray drying granulation parameters are: inlet temperature 250°C, outlet temperature 130°C, nozzle speed 35Hz, peristaltic pump speed 30rpm;
[0081] (3) HfB 2 -TaSi 2 The agglomerated powder is sent to the induction plasma spheroidization equipment for spheroidization treatment and the spheroidized powder is collected. ...
Embodiment 2
[0092] (1) Add 830.2g of hafnium diboride, 169.8g of tantalum disilicide, 5g of PVA and 1500g of deionized water into the ball mill tank with a ball-to-material ratio of 4:1, and ball mill for 2 hours at 400r / min to mix the ingredients evenly , to obtain a suspension of precursor powder;
[0093] (2) Transfer the suspension obtained in step (1) to a spray drying granulation tower for agglomeration and granulation. The granulated powder is first dried in an oven at 150°C for 20 hours, and then passed through a test sieve to obtain granules. HfB with diameter 2 -TaSi 2 Agglomerated powder (HfB 2 with TaSi 2 The volume ratio is 8:2);
[0094] Among them, the spray drying granulation parameters are: inlet temperature 250°C, outlet temperature 130°C, nozzle speed 35Hz, peristaltic pump speed 35rpm;
[0095] (3) HfB 2 -TaSi 2 The agglomerated powder is sent to the induction plasma spheroidization equipment for spheroidization treatment and the spheroidized powder is collected....
PUM
Property | Measurement | Unit |
---|---|---|
Particle size | aaaaa | aaaaa |
Surface roughness | aaaaa | aaaaa |
Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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