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Surface treatment method for improving corrosion resistance and anti-icing performance of titanium alloy surface

A surface treatment, titanium alloy technology, applied in metal material coating process, ion implantation plating, coating and other directions, can solve the problems of difficult construction of surface micro-rough structure, poor bonding force of alloy layer, etc., to avoid homotropy The effect of structural transformation, reduction of working temperature, and improvement of anti-icing ability

Active Publication Date: 2020-11-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Purpose of the invention: Aiming at the problems of poor bonding strength of the alloy layer prepared on the titanium surface and difficulty in constructing a microscopic rough structure on the surface, the present invention provides a surface treatment method for improving the corrosion resistance and anti-icing performance of the titanium alloy surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1: alloy material preparation

[0056] (1) Before installing the Ni-Cu-Y target, polish it with 1# sandpaper to remove the oxide layer, clean it ultrasonically in absolute ethanol and dry it;

[0057] (2) The base material is cast TC4 alloy. Using wire electric discharge cutting technology, the base is made into a sample with a size of 15mm×15mm×4mm, and then coded as 0#, 01#, 03#, 05#, 07# After sanding, polish with 2.5 μm diamond paste. After ultrasonic cleaning with acetone solution, dry for later use;

[0058] (3) A plasma etching system is used to carry out ion etching with argon gas to construct a large number of defective alloy surfaces. The etching process parameters are as follows: power 2000W, argon gas flow rate 12mL / min, pressure 10KPa, time 1h;

[0059] (4) Using the double-glow plasma surface metallurgy method, put the TC4 alloy and Ni-Cu-Y alloy target into the double-glow plasma surface alloying device, use the titanium alloy as the workpiec...

Embodiment 2

[0065] Embodiment 2: alloy material preparation

[0066] (1) Before installing the Ni-Cu-Y target, polish it with 1# sandpaper to remove the oxide layer, clean it ultrasonically in absolute ethanol and dry it;

[0067] (2) The base material is cast TC18 alloy. Using wire electric discharge cutting technology, the base is made into a sample with a size of 15mm×15mm×4mm, and then coded as 0#, 01#, 03#, 05#, 07# After grinding with sandpaper, polish with 2.5 μm diamond abrasive paste, ultrasonically clean with acetone solution, and dry for later use;

[0068] (3) A plasma etching system is used to carry out ion etching with argon gas to construct a large number of defective alloy surfaces. The etching process parameters are as follows: power 2000W, argon gas flow rate 15mL / min, pressure 12KPa, time 0.7h;

[0069] (4) Using the double-glow plasma surface metallurgy method, put the titanium alloy and Ni-Cu-Y alloy target into the double-glow plasma surface alloying device, use the...

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Abstract

The invention discloses a surface treatment method for improving corrosion resistance and anti-icing performance of a titanium alloy surface. The method comprises the following steps that S1, surfacepretreatment is performed on the titanium alloy surface by plasma etching; S2, double-layer glow plasma Ni-Cu-Y alloying is carried out on the surface of the titanium alloy, and a Ni-Cu-Y alloy layeris prepared; and S3, construction of micro / nano scale rough structure is preformed on the prepared Ni-Cu-Y alloy layer by plasma etching. According to the method, the plasma etching technology and thedouble glow plasma surface metallurgy method are combined and used for anti-icing and corrosion resistance performance of the titanium alloy surface, and the corrosion resistance and the anti-icing performance of the titanium alloy surface are greatly improved after the surface treatment of the method.

Description

technical field [0001] The invention relates to a surface treatment method for an alloy material, in particular to a surface treatment method for improving the corrosion resistance and anti-icing performance of the titanium alloy surface. Background technique [0002] Titanium alloy is an important structural metal developed in the 1950s. It has the characteristics of low density, high specific strength and specific fracture toughness, good heat resistance, fatigue strength and crack growth resistance, so it has attracted widespread attention. , which has developed to hundreds of types at present, is used in military fields such as aerospace, ships and weapons, as well as in the fields of daily necessities, automobiles, medical treatment and energy, and is a structural material with great potential and application prospects. , referring to "New Progress in Titanium Alloy Research and Application Status" published by Zi Qun in February 2008, the specific characteristics are a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/22C23C14/16C23C14/02C23C14/58C22C19/03
CPCC22C19/03C23C14/022C23C14/16C23C14/221C23C14/5873
Inventor 张平则陈恩鑫魏东博田恬李逢昆李淑琴姚正军
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS