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Preparation method of ti-al-c system max phase coating on titanium or titanium alloy surface

A ti-al-c, titanium alloy technology, applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of mismatch between coating and substrate performance, coating cracking or peeling damage, etc. Achieve the effect of avoiding coating cracking or peeling damage, reducing the interference of impurity elements, and solving performance mismatch

Active Publication Date: 2020-05-08
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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Problems solved by technology

The method adopts a step-by-step coating method, and utilizes the high activity of Al to penetrate into the TiC layer to form a Ti-Al-C system MAX phase coating, which improves the uniformity of each component in the Ti-Al-C system MAX phase coating and ensures It improves the excellent performance of Ti-Al-C MAX phase coatings, improves the bonding degree between Ti-Al-C MAX phase coatings and titanium or titanium alloy substrates, and solves the problem of performance mismatch between coatings and substrates. The problem is to avoid the coating cracking or peeling damage phenomenon of titanium or titanium alloy with Ti-Al-C MAX phase coating on the surface during the application process

Method used

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  • Preparation method of ti-al-c system max phase coating on titanium or titanium alloy surface
  • Preparation method of ti-al-c system max phase coating on titanium or titanium alloy surface

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Experimental program
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Effect test

Embodiment 1

[0025] Such as figure 1 Shown, the preparation method of the present embodiment comprises the following steps:

[0026]Step 1, using a metal cleaning agent to degrease and clean the surface of the TA2 titanium alloy block;

[0027] Step 2. Place the TA2 titanium alloy block after surface degreasing and cleaning in step 1 in a hydrogen-free carburizing furnace for hydrogen-free carburizing treatment, so that the surface of the titanium or titanium alloy after surface degreasing and cleaning forms a TiC layer ; The thickness of the TiC layer is 50 μm;

[0028] Step 3, cleaning the surface of the TA2 titanium alloy block after the hydrogen-free carburizing treatment in step 2, then placing it in a vacuum physical vapor deposition device for vacuum physical vapor deposition, and coating the TiC layer on the surface of the TA2 titanium alloy block Al layer, forming an Al\TiC coating; the thickness of the Al layer is 10 μm;

[0029] Step 4. Place the TA2 titanium alloy block afte...

Embodiment 2

[0031] Such as figure 1 Shown, the preparation method of the present embodiment comprises the following steps:

[0032] Step 1, using a metal cleaning agent to degrease and clean the surface of the TC4 titanium alloy block;

[0033] Step 2. Place the TC4 titanium alloy block after surface degreasing and cleaning in step 1 in a hydrogen-free carburizing furnace for hydrogen-free carburizing treatment, so that a TiC layer is formed on the surface of the titanium or titanium alloy after surface degreasing and cleaning ; The thickness of the TiC layer is 100 μm;

[0034] Step 3, cleaning the surface of the TC4 titanium alloy block after the hydrogen-free carburizing treatment in step 2, then placing it in a vacuum physical vapor deposition device for vacuum physical vapor deposition, and coating the TiC layer on the surface of the TC4 titanium alloy block Al layer, forming an Al\TiC coating; the thickness of the Al layer is 20 μm;

[0035] Step 4. Place the TC4 titanium alloy b...

Embodiment 3

[0037] Such as figure 1 Shown, the preparation method of the present embodiment comprises the following steps:

[0038] Step 1, using a metal cleaning agent to degrease and clean the surface of the TC6 titanium alloy block;

[0039] Step 2. Place the TC6 titanium alloy block after surface degreasing and cleaning in step 1 in a hydrogen-free carburizing furnace for hydrogen-free carburizing treatment, so that a TiC layer is formed on the surface of the titanium or titanium alloy after surface degreasing and cleaning ; The thickness of the TiC layer is 150 μm;

[0040] Step 3, cleaning the surface of the TC6 titanium alloy block after the hydrogen-free carburizing treatment in step 2, then placing it in a vacuum physical vapor deposition device for vacuum physical vapor deposition, and coating the TiC layer on the surface of the TC6 titanium alloy block Al layer, forming an Al\TiC coating; the thickness of the Al layer is 30 μm;

[0041] Step 4. Place the TC6 titanium alloy b...

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Abstract

The invention discloses a preparation method for a Ti-Al-C-system MAX-phase coating on the titanium or titanium alloy surface. The method comprises the steps that firstly, the titanium or titanium alloy surface is degreased and cleaned; secondly, a TiC layer is formed on the degreased and cleaned titanium or titanium alloy surface through carburization by adopting hydrogen-free carburization treatment; thirdly, Al plating is conducted by adopting a vacuum physical vapor deposition method, and an Al / TiC coating is prepared; and fourthly, the Ti-Al-C-system MAX-phase coating is formed from the Al / TiC coating by adopting an in-situ diffusion method. According to the preparation method, Al is permeated into the TiC layer through the high activity of Al by adopting a step-by-step coating method, the uniformity of all components in the Ti-Al-C-system MAX-phase coating is improved, the excellent properties of the Ti-Al-C-system MAX-phase coating are guaranteed, the bonding degree between theTi-Al-C-system MAX-phase coating and a titanium or titanium alloy matrix is improved, the problem that the properties of the coating and the matrix are not matched is solved, and the method is easy and convenient to use and easy to achieve.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy surface treatment, in particular to a method for preparing a Ti-Al-C system MAX phase coating on the surface of titanium or titanium alloy. Background technique [0002] Titanium and its alloys have excellent comprehensive properties such as light weight, high specific strength, strong heat resistance, and corrosion resistance. They are known as "future metals" and are a new type of structural material with development prospects. Titanium alloys have been widely used in various sectors of the national economy. It is an indispensable material in rockets, missiles and space shuttles. It not only has very important applications in aviation and aerospace industries, but also has begun to be widely used in many industrial sectors such as shipbuilding, metallurgy, petroleum, chemical industry, light industry, and power generation. application. [0003] Although titanium and titanium alloys have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/00C23C14/16C23C14/58
CPCC23C8/00C23C14/16C23C14/5806C23C14/5846
Inventor 李宏战李争显杜继红汪欣王彦峰姬寿长李少龙
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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