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Titanium alloy titanium fireproof coating and preparation method thereof

A titanium alloy and coating technology, applied in the field of titanium alloy titanium fireproof coating and its preparation, can solve the problems of poor impact resistance, weak matrix bonding, reduced matrix fatigue performance, etc., and achieve stable coating, uniform distribution, The effect of improving the resistance to air scour

Active Publication Date: 2022-08-02
北京煜鼎增材制造研究院股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing anti-titanium fire coatings are generally prepared by plasma spraying and thermal spraying, which have various shortcomings such as poor impact resistance, weak bonding with the substrate, and significantly reducing the fatigue performance of the substrate, which cannot meet the current needs. Therefore, it is necessary to develop Anti-titanium fire coating with higher performance and its preparation technology

Method used

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  • Titanium alloy titanium fireproof coating and preparation method thereof
  • Titanium alloy titanium fireproof coating and preparation method thereof

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Experimental program
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Effect test

Embodiment

[0036] The W, Mo, Ta, Nb metal scraps (small metal pieces) are obtained by physical crushing method to obtain 10-100 mesh irregular shaped particles. The molar ratio of W, Mo, Ta and Nb is W: 25%, Mo: 25% , Ta: 25%, Nb: 25%. Then Ni, Cr, Al, Y, V, Zr are powdered by gas atomization to obtain 100-1250 mesh spherical metal powder. The molar ratio of Ni, Cr, Al, Y, V, and Zr is Ni: 50%, Cr : 10%, Al: 10%, Y: 10%, V: 10%, Zr: 10%. The irregular shaped powder and spherical metal powder are mixed in a three-dimensional mixer to obtain a uniformly mixed powder.

[0037] The substrate is sequentially roughened with 60, 120, 240, 500, 800, 1000, 2000 grit sandpaper to remove the surface oxide scale, and then cleaned with ultrasonic acetone and alcohol to remove surface stains.

[0038] The mixed powder and the solvent are mixed and then ground to obtain a powder coating, which is composed of 90% by mass of alloy powder and 10% of absolute ethanol. Grinding was carried out in a morta...

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Abstract

The invention discloses a titanium alloy titanium fireproof coating and a preparation method thereof. The titanium alloy titanium fireproof coating comprises a coating matrix formed by spherical metal powder and irregular irregularities scattered in the coating matrix High melting point metal particles; the spherical metal powder is Ni-based metal powder containing at least one of oxides of Cr, Al, Y, V, Zr, and the irregular irregular high melting point metal particles are W, Mo, Ta , at least one of Nb. It is prepared by laser cladding process to ensure the flame retardant performance, processing performance and high temperature friction and wear performance of the coating.

Description

technical field [0001] The invention relates to the technical field of titanium alloys, in particular to a titanium alloy titanium fireproof coating and a preparation method thereof. Background technique [0002] Titanium alloy has good specific stiffness, specific strength and high heat resistance. It is an indispensable key material for high-performance engines to reduce structural weight and improve thrust-to-weight ratio. Therefore, it is used in modern aero-engine fans, compressors and other components. widely used. However, titanium alloys have low thermal conductivity, high heat of oxidation and high enthalpy of combustion, and are easy to catch fire and burn. Once titanium fire occurs, the engine will be burned within a few seconds, resulting in a tragic death of the machine in an instant. [0003] Titanium fire-resistant coating is to use advanced preparation technology to prepare a layer of hard-to-burn material on the surface of titanium alloy parts, especially t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10B22F9/08C22C19/05
CPCC23C24/106C22C19/056B22F9/082
Inventor 不公告发明人
Owner 北京煜鼎增材制造研究院股份有限公司
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