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

High-temperature-oxidation-resistant heat-insulating coating suitable for titanium alloy surface and preparation method thereof

A technology of anti-oxidation at high temperature and thermal insulation coating, applied in metal material coating process, device for coating liquid on the surface, coating, etc., can solve the problems of poor mechanical properties, poor wear resistance, poor toughness, etc. Excellent high temperature oxidation resistance, environmentally friendly use, good compatibility

Active Publication Date: 2022-02-08
重庆嘉陵特种装备有限公司 +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the problems existing in the above prior art, the object of the present invention is to provide a high-temperature oxidation-resistant heat-insulating coating suitable for the surface of titanium alloys, which effectively solves the problems of easy oxidation, poor mechanical properties, toughness, Poor, poor hardness, poor wear resistance and other defects

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 heat-insulating coating suitable for titanium alloy surface and preparation method thereof
  • High-temperature-oxidation-resistant heat-insulating coating suitable for titanium alloy surface and preparation method thereof
  • High-temperature-oxidation-resistant heat-insulating coating suitable for titanium alloy surface and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A titanium alloy workpiece 10 having a size of 12x12x3mm is suitable for use in a high temperature oxidation insulation of titanium alloy surface, characterized in that the surface of the titanium alloy workpiece 10 is an intermediate transition layer 20, a high temperature antioxidant composite coating. 30 and glass coating 40; intermediate transition layer 20 is Nicral coating, high temperature antioxidant composite coating 30 is MOSI 2 -Conicral coating, glass coating 40 consisting of glass ingredients, glass ingredients include Al 2 O 3 , B 2 O 3 , Cao, MGO, SIO 2 NA 2 O and TiO 2 The thickness of the intermediate transition layer 20 was 0.3 μm; the thickness of the high temperature antioxidant composite coating 30 was 7 μm; the thickness of the glass coating 40 was 1 μm.

[0039] The above method for preparing the high temperature oxidation insulation coating of the titanium alloy surface, characterized in that:

[0040] Includes the following steps:

[0041] S001, bef...

Embodiment 2

[0053] A titanium alloy workpiece 10 having a size of 12x12x3mm is suitable for use in a high temperature oxidation insulation of titanium alloy surface, characterized in that the surface of the titanium alloy workpiece 10 is an intermediate transition layer 20, a high temperature antioxidant composite coating. 30 and glass coating 40; intermediate transition layer 20 is Nicral coating, high temperature antioxidant composite coating 30 is MOSI 2 -Conicral coating, glass coating 40 consisting of glass ingredients, glass ingredients include Al 2 O 3 , B 2 O 3 , Cao, MGO, SIO 2 NA 2 O and TiO 2 The thickness of the intermediate transition layer 20 was 0.45 μm; the thickness of the high temperature antioxidant composite coating 30 was 8 μm; the glass coating 40 had a thickness of 1.5 μm.

[0054] The above method for preparing the high temperature oxidation insulation coating of the titanium alloy surface, characterized in that:

[0055] Includes the following steps:

[0056] S001, be...

Embodiment 3

[0067] A titanium alloy workpiece 10 having a size of 12x12x3mm is suitable for use in a high temperature oxidation insulation of titanium alloy surface, characterized in that the surface of the titanium alloy workpiece 10 is an intermediate transition layer 20, a high temperature antioxidant composite coating. 30 and glass coating 40; intermediate transition layer 20 is Nicral coating, high temperature antioxidant composite coating 30 is MOSI 2 -Conicral coating, glass coating 40 consisting of glass ingredients, glass ingredients include Al 2 O 3 , B 2 O 3 , Cao, MGO, SIO 2 NA 2 O and TiO 2 The thickness of the intermediate transition layer 20 was 0.6 μm; the thickness of the high temperature antioxidant composite coating 30 was 9 μm; the glass coating 40 had a thickness of 2 μm.

[0068] The above method for preparing the high temperature oxidation insulation coating of the titanium alloy surface, characterized in that:

[0069] Includes the following steps:

[0070] S001, befor...

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 provides a high-temperature-oxidation-resistant heat-insulating coating suitable for a titanium alloy surface. The coating sequentially comprises a middle transition layer (20), a high-temperature-oxidation-resistant composite coating (30) and a glass coating (40) from the surface of a titanium alloy workpiece (10) to the outside, the middle transition layer (20) is a NiCrAl coating, the high-temperature anti-oxidation composite coating (30) is a MoSi2-CoNiCrAl coating, the glass coating (40) is composed of glass ingredients, and the glass ingredients comprise Al2O3, B2O3, CaO, MgO, SiO2, Na2O and TiO2. The high-temperature-oxidation-resistant heat-insulating coating is obtained through the steps of workpiece pretreatment, preparation of the middle transition layer, preparation of the high-temperature-oxidation-resistant composite coating and preparation of the glass coating. The coating effectively overcomes the defects that a titanium alloy workpiece is easy to oxidize, poor in mechanical property, poor in toughness, poor in hardness, poor in wear resistance and the like under the high-temperature condition.

Description

Technical field [0001] The present invention relates to the field of titanium alloy surface modification techniques, and more particularly to an anti-high temperature oxidation insulation coating and preparation method thereof for titanium alloy surface. Background technique [0002] The titanium alloy is widely used in aerospace, petroleum and chemical, navigation, metallurgy, automotive industry, etc. due to high strength, small density, toughness and stability, corrosion resistance, etc., are widely used in aerospace, petroleum and chemical, navigation, metallurgy, automotive industry, etc., such as aerospace engine components, ships Parts of the internal combustion engine, etc. [0003] At lower temperatures, the titanium alloy will react with the air and form a very dense oxide film on its surface, which can serve as a good protective effect on the titanium alloy at low temperatures, so low temperature The titanium alloy can remain stable. However, in a high temperature envi...

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): C23C14/35C23C14/16C23C14/02C23C4/18C23C4/134C23C4/073C23C28/02B05D7/24C09D1/00
CPCC23C14/352C23C14/165C23C4/134C23C4/18C23C14/021C23C28/021C23C4/073B05D7/24C09D1/00C09D5/18Y02T50/60
Inventor 徐照英霍永清肖艳红
Owner 重庆嘉陵特种装备有限公司