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

Thickness-adjustable heat insulation/infrared stealth composite coating, titanium alloy material with surface coated with coating and preparation method of titanium alloy material

A composite coating and surface coating technology, which is applied in coating, metal material coating process, fusion spraying, etc., can solve the problem that it is difficult to meet the application requirements of long-term high-temperature thermal shock resistance, non-wear resistance, and lower emissivity, etc. problems, to achieve the effects of improving anti-sintering properties and thermal shock resistance, excellent high-temperature structure and chemical stability, and improving fracture toughness and strain tolerance

Active Publication Date: 2020-05-08
NAT UNIV OF DEFENSE TECH
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The emissivity can be significantly reduced by depositing a noble metal film on the surface of the titanium alloy, but the cost is too expensive; and due to the thin film thickness, it is easy to fall off and not wear-resistant; the high-temperature infrared low-emissivity coating technology has simple process technology, Less impact on the shape, not limited by the shape of the workpiece, low cost and high reliability, etc.
[0003] However, direct coating of infrared low-emissivity coatings on the surface of titanium alloys also has problems such as low bonding strength and poor thermal shock resistance, which is difficult to meet the actual application requirements of long-term high-temperature thermal shock resistance.

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
  • Thickness-adjustable heat insulation/infrared stealth composite coating, titanium alloy material with surface coated with coating and preparation method of titanium alloy material
  • Thickness-adjustable heat insulation/infrared stealth composite coating, titanium alloy material with surface coated with coating and preparation method of titanium alloy material
  • Thickness-adjustable heat insulation/infrared stealth composite coating, titanium alloy material with surface coated with coating and preparation method of titanium alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, a thermal insulation / infrared stealth composite coating with adjustable thickness is a multi-layer superimposed structure, starting from the titanium alloy substrate, including a metal bonding layer, a lanthanum phosphate-hexaaluminate composite ceramic layer and Infrared low emissivity layer. The metal bonding layer is a NiCrAlY metal bonding layer, and the lanthanum phosphate-hexaaluminate composite ceramic layer is 5wt% LaPO 4 -LaAl 11 o 18 The composite ceramic layer, the infrared low emissivity layer is made of Ag conductive phase and Bi 2 o 3 -Al 2 o 3 -TiO 2 -Li 2 O-SiO 2 It is composed of a low-melting point glass bonding phase, and the Ag conductive phase accounts for 85% of the total mass of the conductive phase and the bonding phase.

[0044] The thickness of the metal bonding layer is 0.05mm, the thickness of the ceramic layer is 0.08mm, the thickness of the infrared low emissivity layer is 0.02mm, and the total thickness...

Embodiment 2

[0071] A thermal insulation / infrared stealth composite coating with adjustable thickness is a multi-layer superimposed structure, starting from the titanium alloy substrate, including NiCrAlY metal bonding layer, lanthanum phosphate-hexaaluminate composite ceramic layer and infrared low Emissivity layer. Lanthanum phosphate-hexaaluminate composite ceramic layer is 5wt% LaPO 4 -LaAl 11 o 18 Composite ceramic layer, infrared low emissivity layer is made of Ag conductive phase and Bi 2 o 3 -Al 2 o 3 -TiO 2 -Li 2 O-SiO 2 It is composed of a low-melting point glass bonding phase, and the Ag conductive phase accounts for 85% of the total mass of the conductive phase and the bonding phase.

[0072] The thickness of the metal bonding layer is 0.10mm, the thickness of the ceramic layer is 0.9mm, the thickness of the infrared low emissivity layer is 0.02mm, and the total thickness of the coating is 1.02mm.

[0073] A titanium alloy material coated with a coating on the surface...

Embodiment 3

[0087] A thermal insulation / infrared stealth composite coating with adjustable thickness is a multi-layer superimposed structure, starting from the titanium alloy substrate, including a CoNiCrAlY metal bonding layer, a lanthanum phosphate-hexaaluminate composite ceramic layer and an infrared low Emissivity layer. Lanthanum phosphate-hexaaluminate composite ceramic layer is 25wt% LaPO 4 -SrAl 12 o 19 Composite ceramic layer, infrared low emissivity layer is made of Ag conductive phase and Bi 2 o 3 -Al 2 o 3 -TiO 2 -Li 2 O-SiO 2 It is composed of a low-melting point glass bonding phase, and the Ag conductive phase accounts for 90% of the total mass of the conductive phase and the bonding phase.

[0088] The thickness of CoNiCrAlY metal bonding layer is 0.08mm, 25wt% LaPO 4 -SrAl 12 o 19 The thickness of the composite ceramic layer is 0.25mm, the thickness of the infrared low emissivity layer is 0.02mm, and the total thickness of the coating is 0.35mm.

[0089] A tit...

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 field of high-temperature functional ceramic coating materials, and particularly discloses a thickness-adjustable thermal insulation / infrared stealth composite coating. The composite coating is of a multi-layer stacked structure and sequentially comprises a metal bonding layer, a ceramic layer and an infrared low-emissivity layer from inside to outside, the ceramic layer is a lanthanum phosphate-hexaaluminate composite ceramic layer, and the infrared low-emissivity layer is a low-emissivity coating which is formed by taking Bi2O3-Al2O3-TiO2-Li2O-SiO2 series low-melting-point glass as a binding phase and taking silver as a conductive phase. A titanium alloy material with the surface coated with the coating and a preparation method of the titanium alloy materialare further provided. The heat insulation / infrared stealth composite coating has the characteristics of excellent thermal shock resistance and high-temperature infrared low emissivity; and the thickness of the coating can be regulated and controlled according to different actual application requirements, and the density and the heat insulation performance of the coating surface can be regulated.

Description

technical field [0001] The invention belongs to the field of high-temperature functional ceramic coating materials, and in particular relates to a heat-insulating / infrared stealth composite coating with adjustable thickness, a titanium alloy material coated with a coating on the surface and a preparation method thereof. Background technique [0002] A typical thermal barrier coating system is composed of a metal bonding layer and a ceramic surface layer. The ceramic surface layer with low thermal conductivity separates the metal substrate from the high-temperature flame, provides excellent thermal insulation performance for the metal substrate, and reduces the metal surface temperature. Effectively improve its temperature resistance and high temperature performance. Coating thermal barrier coatings on the surface of titanium alloy substrates is one of the main technical means to quickly and effectively improve its high temperature resistance and oxidation resistance. At the...

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): C23C4/134C23C4/04C23C4/11C23C4/073
CPCC23C4/04C23C4/073C23C4/11C23C4/134
Inventor 黄文质刘海韬
Owner NAT UNIV OF DEFENSE 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