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Bonding layer material containing active element for thermal barrier coating

A technology of active elements and thermal barrier coatings, which is applied in the development and application of new materials, can solve the problems of destroying thermal barrier coatings, etc., so as to improve the service life, improve the resistance to high temperature oxidation and corrosion, and improve the ability to resist high temperature oxidation and corrosion Effect

Inactive Publication Date: 2015-06-17
TSINGHUA UNIV
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  • Abstract
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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 active element for thermal barrier coating
  • Bonding layer material containing active element for thermal barrier coating
  • Bonding layer material containing active element for thermal barrier coating

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Embodiment Construction

[0042] The invention proposes a novel bonding layer material containing an active element for thermal barrier coatings, and a cobalt-nickel-based high-temperature alloy material for the bonding layer of thermal barrier coatings of high-temperature parts of turbine blades. Further elaborate as follows by embodiment:

[0043] Bonding material of the present invention is made of basic component and added component; The atomic percentage of described matrix component and each component is as follows:

[0044] Co: Bal. (surplus),

[0045] Ni: 24at%-34at%,

[0046] Cr: 16at%-27at%, more preferably 16at%-22at%,

[0047] Al:9at%-21at%, more preferably 9at%-16at%,

[0048] The purity of each of the above matrix components is above 99.90%.

[0049] Add any one of the following ingredients and the atomic percentage is as follows:

[0050] Sc: 0.05at%-2at%, better 0.05at%-0.5at%, most suitable 0.05at%-0.2at%;

[0051] La: 0.05at%-2at%, better 0.05at%-0.5at%, most suitable for 0.05at...

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Abstract

The invention relates to a bonding layer material containing an active element for a thermal barrier coating, and belongs to the field of development and application of new materials. The bonding layer material comprises basic components and addition components; the basic components comprise the following elements according to atom percent: Bal (the balance) of Co, 24at%-34at% of Ni, 16at%-27at% of Cr, and 9at%-21at% of Al; any component is added and the component comprises the following elements according to atom percent: 0.05at%-2at% of Sc, 0.05at%-2at% of La, 0.05at%-2at% of Dy, 0.05at%-2at% of Nd, 0.05at%-2at% of Ce, 0.05at%-1at% of Hf. According to the invention, CoNiCrAl alloy is taken as a basis, through the addition of microelements, the high temperature oxidation corrosion resistance of the alloy is improved, so that the whole performance of the thermal barrier coating is improved, the high-temperature oxidation resistance is improved, and the service time is prolonged.

Description

technical field [0001] The invention belongs to the field of new material development and application, and in particular relates to a novel thermal protection coating material doped with active elements alone, 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...

Claims

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Application Information

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IPC IPC(8): C22C19/07C22C30/00
Inventor 杨志刚张玉朵汪海锋张弛张强段方苗
Owner TSINGHUA UNIV
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