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

A kind of surface anti-oxidation coating and preparation method thereof and surface modified titanium alloy

An anti-oxidation coating, titanium alloy technology, applied in the coating, metal material coating process, vacuum evaporation plating and other directions, can solve the problems of inability to inhibit oxygen diffusion, the oxidation resistance of titanium alloys decline, etc., to achieve excellent oxidation resistance performance, enhancing antioxidant properties, promoting synergistic effects

Active Publication Date: 2022-06-17
SOUTHWEST UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the temperature continues to rise, the oxide film gradually becomes loose and porous, which cannot inhibit the diffusion of oxygen into the interior of the titanium alloy, resulting in a decrease in the oxidation resistance of the titanium alloy.

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
  • A kind of surface anti-oxidation coating and preparation method thereof and surface modified titanium alloy
  • A kind of surface anti-oxidation coating and preparation method thereof and surface modified titanium alloy
  • A kind of surface anti-oxidation coating and preparation method thereof and surface modified titanium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Using TC4 titanium alloy, it was cut into a base of Φ30mm×10mm, and 80 mesh, 120 mesh, 240 mesh, 400 mesh, 600 mesh, 800 mesh, 1000 mesh, 2000 mesh, 3000 mesh and 5000 mesh SiC gold were used in sequence. The substrate was sequentially sanded with photographic sandpaper until there were no visible scratches on the surface, then washed with acetone and dried for later use.

[0052] The above-mentioned substrates were placed in a magnetron sputtering system for coating. The target material used in magnetron sputtering is MoSi 2 Compound targets and Si targets. MoSi 2 The purity of the compound target is 99.95wt.%, the purity of the Si target is 99.95wt.%, the MoSi target is 99.95wt.% 2 Both the compound target and the Si target have a diameter of 101 mm and a thickness of 5 mm.

[0053] The background vacuum of the magnetron sputtering chamber is 5.0×10 -6 Torr. Before coating, a bias cleaning of the substrate is required to remove residual contamination and native ...

Embodiment 2

[0056] The difference from Example 1 is that in the magnetron sputtering, the DC sputtering power of the Si target is 100W. Prepared Si / MoSi 2 The thickness of the composite coating is 1.49 μm.

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
particle sizeaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of surface modification of materials, and specifically discloses a surface oxidation-resistant coating and a preparation method thereof and a surface-modified titanium alloy. The surface oxidation-resistant coating of the invention adopts Si / MoSi 2 Composite coatings, where MoSi 2 The phase structure is C11b type MoSi 2 , has excellent high temperature stability; and Si element exists in the form of simple substance, which can make up for MoSi 2 The disadvantage of slow diffusion rate of Si element in medium is conducive to the rapid formation of SiO on the coating surface 2 protective layer; meanwhile, control Si and MoSi 2 The ratio of the amount of substance is (1~1.5):1, which can ensure enough Si element and O 2 reaction, promoting continuous dense SiO 2 The formation of a protective layer prevents the O 2 Diffusion to the interior resulting in M O o 3 Oxidation phase generation, thus effectively suppressing the MoSi 2 The "PESTING" pulverization phenomenon caused by oxidation of the coating at 500-800°C.

Description

technical field [0001] The present invention relates to the technical field of surface modification, more particularly, it relates to a surface anti-oxidation coating and its preparation method and a surface-modified titanium alloy. Background technique [0002] Due to its high specific strength, low density, and high heat resistance, titanium alloys have good application prospects in high-temperature components such as aerospace engine components and marine internal combustion engine components. Below 500°C, in the presence of oxygen, titanium will undergo an oxidation reaction, forming a well-bonded and dense oxide film on the surface of the titanium alloy, thereby preventing the titanium alloy from being continuously oxidized. However, when the temperature continued to increase, the oxide film gradually became loose and porous, which could not inhibit the diffusion of oxygen into the titanium alloy, resulting in a decrease in the oxidation resistance of the titanium alloy...

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 Patents(China)
IPC IPC(8): C23C14/35C23C14/06C23C14/58
CPCC23C14/352C23C14/06C23C14/5806
Inventor 李凤吉余修晗张善勇王锦标
Owner SOUTHWEST UNIV