Multifunctional alumina/metal micro-laminated coating

A kind of technology of aluminum oxide layer and aluminum oxide, applied in the direction of metal material coating process, coating, layered products, etc., can solve the problems of ceramic coating cracking and peeling, barrier effect can not be durable, etc., to achieve excellent anti-cracking performance , Excellent high temperature oxidation resistance, excellent thermal shock resistance

Inactive Publication Date: 2010-01-20
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since Al 2 o 3 film and Al 2 o 3 The ceramic coating is prone to cracking and spalling, which makes the barrier effect of hydrogen permeation and hydrogen diffusion not durable

Method used

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  • Multifunctional alumina/metal micro-laminated coating
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Aluminum Oxide / Au Micro Laminate Coating

[0039] according to figure 1 In the manner shown, radio frequency magnetron sputtering is used to deposit high-purity alumina and magnetron sputtering to deposit pure Au alternately on the surface of 1Cr13 alloy, each layer has a thickness of 50 nm, and a total of 5 layers are deposited. It was oxidized in air at 900°C for 200 hours, which proved to have excellent high temperature oxidation resistance and peeling resistance. Tritium penetration test results show that it has excellent anti-tritium penetration performance, and almost no tritium penetration is detected.

Embodiment 2

[0040] Embodiment 2: Alumina / Au-Al micro-laminate coating

[0041] according to figure 1 In the shown manner, radio frequency magnetron sputtering is used alternately to deposit high-purity alumina and magnetron sputtering to deposit Au-Al (with an Al content of 2%) on the surface of the 1Cr18Ni9Ti alloy. The thickness of each layer of alumina is 100 nm, and each layer of Au-Al is The layer thickness was 40 nm, and a total of 5 layers were deposited. It was oxidized in air at 900°C for 200 hours, which proved to have excellent high temperature oxidation resistance and peeling resistance. Tritium penetration test results show that it has excellent anti-tritium penetration performance, and almost no tritium penetration is detected.

Embodiment 3

[0042] Example 3: Alumina / Pt microlaminate coating

[0043] according to figure 1 In the manner shown, radio frequency magnetron sputtering is alternately used to deposit high-purity alumina layers with a thickness of 200 nm, and magnetron sputtering to deposit pure Pt layers with a thickness of 40 nm on the surface of the Ni-based alloy, and a total of 7 layers are deposited. It was oxidized in air at 1100°C for 200 hours, which proved to have excellent high temperature oxidation resistance and peeling resistance.

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Abstract

The invention provides a multifunctional alumina / metal micro-laminated coating, which belongs to composite material made from metals and ceramic and coating technology thereof and is used for high-temperature protection, anti-tritium permeation, and anti-hydrogen damage of alloys with wide temperature scope. The micro-laminated coating adopts a high-pure alumina or alumina doped with a small amount of rear earth oxide, or alumina doped with a small amount of zirconia as an alumina coating, wherein the metals can be Pt, or Rh, or Ir, or Au, or alloys of all, or M-Cr-Al-rare earth alloy, or Fe, Co, Ni-based aluminum-containing alloy. The thickness of each laminated coating is 20-1000nm. The micro-laminated coating can be obtained by adopting a plurality of methods through the alternative sedimentation of the alumina coating and a metal coating. The micro-laminated coating has the following characteristics: (1) excellent binding force with the alloy substrate; (2) excellent high-temperature protection performance and anti-tritium penetration performance, and anti-hydrogen damage performance; (3) wide operating temperature range from room temperature to 2000 DEG C; (4) the evaporation inhibition of precious metal coatings at high temperature; and (5) and synergistic protective effect with other coatings.

Description

technical field [0001] The invention relates to a metal-ceramic composite material and its coating technology, which is used for high-temperature protection of alloys in a wide temperature range, anti-tritium penetration and anti-hydrogen damage of alloys. Background technique [0002] 1) Background technology on high temperature protection of wide temperature range alloys [0003] Superalloys are key materials for the development of aero-engines, ultra-high-speed aircraft, rocket engines, spaceships, nuclear reactors, nuclear fusion devices, thermal power boilers, and ship engines. Superalloys must meet two main requirements: one is sufficiently excellent high-temperature mechanical properties; the other is sufficiently good high-temperature oxidation resistance. However, the high-temperature mechanical properties and high-temperature oxidation resistance of superalloys have inconsistent requirements on alloy components, and this contradiction has become a major obstacle t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/00B32B9/00C23C30/00
CPCY02P20/141
Inventor 何业东王德仁张津孔祥华高俊国任超赵广宏
Owner UNIV OF SCI & TECH BEIJING
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