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

High-temperature spectral selective absorption coating layer based on refractory metal boride and preparation method

A technology of metal borides and refractory metals, which is applied in the field of high-temperature spectral selective absorption coatings, can solve problems such as optical performance degradation and failure, and achieve excellent optical performance and thermal stability.

Active Publication Date: 2016-11-23
LANZHOU JIAOTONG UNIV
View PDF6 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

General solar spectrum selective absorption coatings tend to deteriorate or even fail due to the evolution of composition and structure under high temperature conditions

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 spectral selective absorption coating layer based on refractory metal boride and preparation method
  • High-temperature spectral selective absorption coating layer based on refractory metal boride and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: see figure 1 , a high-temperature spectrally selective absorption coating based on refractory metal borides, an infrared reflective layer 2 is arranged on a substrate 1, and a spectrum main absorption layer 3, a spectrum auxiliary absorption layer 4 and Anti-reflection layer 5. The spectrum main absorption layer 3 is made of refractory metal boride HfB 2 One of the compositions, the film thickness is 20nm, the metal boride structure is amorphous or nanocrystalline, and it has the function of absorbing spectral energy and high temperature diffusion barrier.

[0042] The infrared reflective layer 2 is a high-melting-point metal thin film with a W content of 99.9-99.99% or a Mo content of 99.9-99.99%, and a film thickness of 100 nm.

[0043] The spectrum auxiliary absorption layer 4 is made of refractory metal boride TaB 2 A kind of dispersion in Al 2 o 3 or SiO 2 The composite layer is formed in the ceramic medium, the thickness of the composite layer can...

Embodiment 2

[0046] Example 2: see figure 1 , a high-temperature spectrally selective absorption coating based on refractory metal borides, an infrared reflective layer 2 is arranged on a substrate 1, and a spectrum main absorption layer 3, a spectrum auxiliary absorption layer 4 and Anti-reflection layer 5. The spectrum main absorption layer 3 is made of refractory metal boride TaB 2 or HfB 2 Two kinds of mixed composition, the thickness of the film is 50nm, the metal boride structure is amorphous or nanocrystalline, and it has the function of absorbing spectral energy and high temperature diffusion barrier.

[0047] The infrared reflective layer 2 is a high-melting-point metal film with a W content of 99.9-99.99% or a Mo content of 99.9-99.99%, and a film thickness of 300nm.

[0048] The spectrum auxiliary absorption layer 4 is made of refractory metal boride TaB 2 or H f B two mixed evenly dispersed in Al 2 o 3 or SiO 2 The composite layer is formed in the ceramic medium, the th...

Embodiment 3

[0051] Embodiment 3: see figure 1 , a high-temperature spectrally selective absorption coating based on refractory metal borides, an infrared reflective layer 2 is arranged on a substrate 1, and a spectrum main absorption layer 3, a spectrum auxiliary absorption layer 4 and Anti-reflection layer 5.

[0052] The spectrum main absorption layer 3 is made of refractory metal boride TaB 2 or HfB 2 The two mixtures are uniformly dispersed in Al 2 o 3 or SiO 2 The composite layer is formed in the ceramic medium, the thickness of the composite layer can be 80nm, and the refractory metal boride in the composite layer is in Al 2 o 3 or SiO 2 The volume percentage in the ceramic medium is 0.75, and the refractory metal boride is in an amorphous state or a nanocrystalline state, which mainly plays the role of absorbing spectral energy.

[0053] The infrared reflective layer 2 is a high-melting point metal film with a W content of 99.9-99.99% or a Mo content of 99.9-99.99%, and a f...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of functional films, in particular to a high-temperature spectral selective absorption coating layer capable of realizing solar photothermal energy conversion. The high-temperature spectral selective absorption coating layer based on refractory metal boride is characterized in that an infrared reflecting layer is arranged on a substrate; and a spectral main absorbing layer, a spectral auxiliary absorbing layer and an anti-reflection layer are arrange don the infrared reflecting layer in sequence, wherein the spectral main absorbing layer and the spectral auxiliary absorbing layer both include the refractory metal boride as a main component for absorbing spectral energy. The coating layer can be deposited on such basal bodies as stainless steel by such vacuum film plating technologies as magnetron sputtering, can stably work in vacuum or atmospheric environment of 500-620 DEG C, and can be applied to such fields as solar light condensation and heat collection high-temperature power generation. The coating layer has such characteristics as high absorptivity, low heat emitting ratio and excellent high-temperature stability and durability, and is suitable for industrial production and application.

Description

technical field [0001] The invention relates to the technical field of functional thin films, in particular to a high-temperature spectrally selective absorption coating capable of realizing solar photothermal energy conversion. Background technique [0002] The accelerated consumption of fossil energy has caused human society to face a serious energy crisis. At the same time, the greenhouse effect caused by the related carbon emission problem has also made human beings face a serious environmental crisis. To this end, countries around the world are actively developing and utilizing various renewable and clean energy sources. Solar energy resources are "inexhaustible and inexhaustible", which is an important part of the current development and utilization of renewable energy. Solar thermal power generation has been highly valued by people in recent years due to its advantages of high energy conversion efficiency, stable power output, low energy consumption in the manufactur...

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): F24J2/48C23C14/35C23C14/06C23C14/08C23C14/10
CPCC23C14/067C23C14/081C23C14/10C23C14/352F24S70/12F24S70/225Y02E10/40
Inventor 田广科范多进夏荣斌王成龙任杰
Owner LANZHOU JIAOTONG UNIV
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