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Wear-resistant composite ceramic coating on titanium alloy surface and preparation method thereof

A technology of composite ceramics and titanium alloys, applied in metal material coating process, coating and other directions, can solve the problems of insufficient wear resistance of coatings, and achieve uniform mechanical properties, strong practicability, and easy promotion.

Active Publication Date: 2020-08-28
QINGDAO BINHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating still has the problem of insufficient wear resistance

Method used

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  • Wear-resistant composite ceramic coating on titanium alloy surface and preparation method thereof
  • Wear-resistant composite ceramic coating on titanium alloy surface and preparation method thereof
  • Wear-resistant composite ceramic coating on titanium alloy surface and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A method for preparing a wear-resistant composite ceramic coating on a titanium alloy surface, comprising the following steps:

[0052] (1) Preparation and pretreatment of matrix materials

[0053] In this test, Ti-6Al-4V titanium alloy is selected as the coating substrate, and the main components of the substrate are:

[0054] Table 1 Chemical composition of Ti-6Al-4V titanium alloy (mass fraction, %)

[0055]

[0056] The sample was cut into strips of 100×10×10mm, polished on 400#, 600# and 1000# sandpaper before the experiment, then cleaned with alcohol and supplemented by ultrasonic vibration, and dried for later use.

[0057] (2) Coating original alloying powder and proportion: 80% B 4 C-10%G-10%Si 3 N 4 (mass fraction), and the powder is mixed evenly with a ball mill for later use.

[0058] (3) Presetting the powder in step (2) on the surface of the alloy in step (1), with a preset thickness of 0.8-1.0 mm. Place the pre-powdered sample on a fixed step in ...

Embodiment 2

[0062] Same as Example 1, the difference is: the original alloyed powder of the coating and the proportioning ratio are: 70% B 4 C-10%G-20%Si 3 N 4 (quality score).

Embodiment 3

[0064] Same as Example 1, the difference is: the original alloyed powder of the coating and the proportioning ratio are: 60% B 4 C-20%G-20%Si 3 N 4 (quality score).

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Abstract

The invention provides a titanium alloy surface wear-resistant compound ceramic coating and a preparation method thereof. The composition system of original alloying powder of the wear-resistant compound ceramic coating is (40-80)%B4C+(10-30)%C-(10-30)%Si3N4 by mass percent. The laser surface alloying mode is adopted, the wear-resistant compound ceramic coating generated in situ is prepared on thesurface of a titanium alloy, and the coating and a matrix are in typical metallurgical bonding. The coating has high hardness, excellent wear resistance and great application prospects. The steps aresimple, operation is convenient, and practicability is high.

Description

technical field [0001] The invention belongs to the field of titanium alloy surface treatment, in particular to a titanium alloy surface wear-resistant composite ceramic coating and a preparation method thereof. Background technique [0002] Titanium and titanium alloys have outstanding advantages such as high specific strength, corrosion resistance, heat resistance and good weldability, and have been widely used in aerospace, petrochemical, marine industry, national defense equipment and other fields. However, titanium and titanium alloys have low hardness and poor wear resistance, so they are not suitable for manufacturing transmission parts in mechanical products. How to improve the surface hardness and wear resistance of titanium and titanium alloys, and expand their application range in the industrial field has aroused widespread attention of scientists and technicians in the field of materials at home and abroad. [0003] In order to give full play to the advantages o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10
CPCC23C24/10
Inventor 戴景杰张红霞李守英张丰云张年龙王波王阿敏
Owner QINGDAO BINHAI UNIV
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