Method for improving binding force of Ti-Al coating on surface of TA15 titanium alloy and prepared coating

A technology of titanium alloy and bonding force, which is applied in the coating process and coating of metal materials, can solve the problems of easy peeling off of the coating and other comprehensive properties, and achieve the solution of easy peeling off of the coating, improvement of hardness and wear resistance, and improvement of coating quality. The effect of layer organization

Active Publication Date: 2021-08-06
CHENGDU AERONAUTIC POLYTECHNIC
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for improving the bonding force of Ti-Al coating on the surface of TA15 titanium alloy and the prepared coating, which can improve the bonding of titanium alloy surface It effectively solves the problems of easy peeling and poor comprehensive performance of the coating in the prior art, and can obtain an intermetallic compound coating on the surface of TA15 titanium alloy, which has good adhesion, is not easy to fall off, and has no obvious pores and crack

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  • Method for improving binding force of Ti-Al coating on surface of TA15 titanium alloy and prepared coating
  • Method for improving binding force of Ti-Al coating on surface of TA15 titanium alloy and prepared coating
  • Method for improving binding force of Ti-Al coating on surface of TA15 titanium alloy and prepared coating

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Embodiment 1

[0029] Such as Figure 1-2 As shown, the present embodiment provides a method for improving the bonding force of the Ti-Al coating on the surface of the TA15 titanium alloy and the prepared coating, the method comprising the following steps:

[0030] (1) Cut the TA15 titanium alloy into blocks of 10mm×10mm×8mm, then polish and grind it, and use analytically pure grade acetone, hydrochloric acid, ethanol and deionized water to ultrasonically clean the titanium alloy for 8 minutes to obtain pretreated titanium alloy;

[0031] (2) The ZL116 alloy is made into powder with an average size of 75 μm;

[0032] (3) The surface of the pretreated titanium alloy obtained in step (1) is carried out by laser cladding with the ZL116 alloy powder to form a titanium-aluminum compound by adopting the method of coaxial powder feeding under argon protection, and then air-cooled to obtain a high-strength coating on the surface of the titanium alloy. layer, use sandpaper to polish the pure alumin...

Embodiment 2

[0039] The present embodiment provides a method for improving the Ti-Al coating binding force on the surface of TA15 titanium alloy and the prepared coating, the method comprising the following steps:

[0040] (1) Cut the TA15 titanium alloy into blocks of 10mm×10mm×8mm, then polish and grind it, and use analytically pure grade acetone, hydrochloric acid, ethanol and deionized water to ultrasonically clean the titanium alloy for 9 minutes to obtain pretreated titanium alloy. alloy;

[0041] (2) The ZL116 alloy is made into powder with an average size of 75 μm;

[0042] (3) The surface of the pretreated titanium alloy obtained in step (1) is carried out by laser cladding with the ZL116 alloy powder to form a titanium-aluminum compound by adopting the method of coaxial powder feeding under argon protection, and then air-cooled to obtain a high-strength coating on the surface of the titanium alloy. layer, use sandpaper to polish the pure aluminum layer on the outer surface of th...

Embodiment 3

[0044] The present embodiment provides a method for improving the Ti-Al coating binding force on the surface of TA15 titanium alloy and the prepared coating, the method comprising the following steps:

[0045] (1) Cut the TA15 titanium alloy into blocks of 10mm×10mm×8mm, then polish and grind it, and use analytically pure grade acetone, hydrochloric acid, ethanol and deionized water to ultrasonically clean the titanium alloy for 8 minutes to obtain pretreated titanium alloy;

[0046] (2) The ZL116 alloy is made into powder with an average size of 75 μm;

[0047] (3) The surface of the pretreated titanium alloy obtained in step (1) is carried out by laser cladding with the ZL116 alloy powder to form a titanium-aluminum compound by adopting the method of coaxial powder feeding under argon protection, and then air-cooled to obtain a high-strength coating on the surface of the titanium alloy. layer, use sandpaper to polish the pure aluminum layer on the outer surface of the coati...

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Abstract

The invention discloses a method for improving binding force of a Ti-Al coating on surface of TA15 titanium alloy and a prepared coating. The preparation method comprises the following steps that after titanium alloy is cut, polishing, grinding and ultrasonic washing are carried out, and pretreated titanium alloy is obtained; and the surface of the titanium alloy is melted by adopting a laser melt injection method, mixed ZL116 powder is injected in an argon coaxial powder feeding manner, multi-channel cladding and air cooling are carried out, and a pure aluminum layer on the surface of the coating is ground to obtain the titanium-aluminum intermetallic compound coating. The coating prepared through the method provided by the invention is good in binding force, not prone to falling off, high in production efficiency and free of obvious air holes and cracks, and the problems that in the prior art, a coating is prone to falling off, poor in comprehensive performance and the like are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy coatings, and in particular relates to a method for improving the bonding force of a Ti-Al coating on the surface of a TA15 titanium alloy and the prepared coating. Background technique [0002] Although there is an oxide film on the surface of the TA15 titanium alloy, it is easy to peel off and cannot protect the subsurface layer well, which seriously affects the safety and reliability of the titanium alloy during use. Titanium alloy intermetallic compounds have high strength, high hardness, high wear resistance and high temperature resistance, so using various technologies to prepare wear-resistant coatings or high-temperature oxidation layers on the surface of titanium alloys is the technical focus we need to solve . Contents of the invention [0003] The purpose of the present invention is to provide a method for improving the bonding force of the Ti-Al coating on the surface of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/106Y02P10/25
Inventor 李勇王秋林朱金波徐如涛
Owner CHENGDU AERONAUTIC POLYTECHNIC
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