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Bonding layer material containing various active elements and used for thermal barrier coating

A technology of active element and thermal barrier coating, which is applied in the field of new thermal protection coating materials mixed with active elements, can solve problems such as damage to thermal barrier coating, and achieve the effect of improving high temperature oxidation corrosion resistance

Inactive Publication Date: 2015-05-06
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the newly formed TGO layer will cause stress in the thermal barrier coating, thus destroying the thermal barrier coating

Method used

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  • Bonding layer material containing various active elements and used for thermal barrier coating
  • Bonding layer material containing various active elements and used for thermal barrier coating
  • Bonding layer material containing various active elements and used for thermal barrier coating

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Embodiment Construction

[0032] A bonding layer material containing multiple active elements for thermal barrier coating proposed by the present invention is further described in detail as follows in combination with examples and accompanying drawings:

[0033] A bonding layer material containing multiple active elements for thermal barrier coatings proposed by the present invention is composed of basic components and additional components; the matrix components and the atomic percentages of each component are as follows:

[0034] Co: Bal. (surplus),

[0035] Ni: 24at%-34at%,

[0036] Cr: 16at%-27at%, more preferably 16at%-22at%,

[0037] Al:9at%-21at%, more preferably 9at%-16at%,

[0038] The purity of each of the above components is above 99.90%.

[0039] Add any two combinations of the following components and the atomic percentages in each combination are as follows:

[0040] Hf+Y:0.05at%-2at%, wherein, Hf:Y is: 1:1~4:1;

[0041] 0.05at%-0.5at% is better, 0.1at%-0.2at% is the most suitable; ...

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Abstract

The invention relates to a bonding layer material containing various active elements and used for a thermal barrier coating and belongs to the development and application field of new materials. The material is composed of basic components and additive components; the base components by atomic percent are as follows: balance of Co, 24at%-34at% of Ni, 16at%-27at% of Cr, and 9at%-21at% of Al; the additive components by atomic percent are as follows: 0.05at%-2at% of Hf and Y in a ratio of 1: 1-4: 1; 0.1at%-2at% of Dy and La in a ratio of 1: 1-4: 1; 0.05at%-2at% of Hf and Sc in a ratio of 1: 4-4: 1. The CoNiCrAl alloy is used as a base, and the microelement is added to improve the high temperature oxidation corrosion resistance of the alloy, thereby increasing the integral property of the thermal barrier coating, improving the high temperature oxidation resistance and prolonging the service life of the thermal barrier coating.

Description

technical field [0001] The invention belongs to the field of new material development and application, and in particular relates to a novel heat protection coating material mixed with active elements, which is mainly used in thermal barrier coating bonding layers of high-temperature parts of engines and other parts that need to be protected from high-temperature oxidation and corrosion. Background technique [0002] Today, due to the development of science and technology, with the development of aviation gas turbines in the direction of high flow ratio, high thrust-to-weight ratio, and high inlet temperature, the temperature and pressure of the gas in the combustion chamber are also increasing, and more requirements are put forward for the comprehensive performance of turbine engine blades. high demands. The base material of modern turbine engines is mainly high-temperature alloy, and a thermal barrier coating is added on the base as a protective coating for hot-end parts, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/07C22C30/00
Inventor 杨志刚汪海锋张玉朵张弛张强段方苗
Owner TSINGHUA UNIV
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