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Titanium alloy with superhydrophobic micro-arc oxidation wear-resistant coating and its preparation method

A technology of micro-arc oxidation and wear-resistant coatings, which is applied in coatings, surface reaction electrolytic coatings, electrolytic coatings, etc., can solve the problems of less super-hydrophobic properties, poor wear and corrosion resistance, and achieve wear resistance Strong, improved wear resistance, high strength effect

Active Publication Date: 2021-08-03
牡丹江申佳合金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a titanium alloy with super-hydrophobic micro-arc oxidation wear-resistant coating and its preparation method, which solves the problem that the surface of titanium alloy rarely has super-hydrophobic properties, and its wear-resistant and corrosion-resistant poor performance problem

Method used

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  • Titanium alloy with superhydrophobic micro-arc oxidation wear-resistant coating and its preparation method
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  • Titanium alloy with superhydrophobic micro-arc oxidation wear-resistant coating and its preparation method

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preparation example Construction

[0031] The titanium alloy preparation method of the superhydrophobic micro-arc oxidation wear-resistant coating comprises the following steps:

[0032] (1) Add distilled water, edetate disodium, Na 2 SiO 3 、Na 2 HPO 4 , NaOH and nano ZrO 2 , stir and dissolve at a constant speed to form an electrolyte, wherein the concentration of disodium edetate in the electrolyte is 1.8-2.2g / L, Na 2 SiO 3 The concentration is 12-14g / L, Na 2 HPO 4 The concentration is 7-9g / L, nano ZrO 2 The concentration is 4-5g / L, the titanium alloy Ti-6Al-4V is used as the anode, the stainless steel electrolytic cell is used as the cathode, the power supply is a pulse power supply, the frequency is 600-1000Hz, the duty cycle is 15-20%, and the segmental voltage method is adopted Carry out the micro-arc oxidation process, increase the forward voltage from 0V to 330V, perform micro-arc oxidation for 2-3min, then increase the forward voltage to 380V, perform micro-arc oxidation for 2-3min, and finally...

Embodiment 1

[0037] (1) Preparation of ZrO 2 Layer micro-arc oxidation titanium alloy component 1: Add distilled water, disodium edetate, Na 2 SiO 3 、Na 2 HPO 4 , NaOH and nano ZrO 2 , stirred and dissolved at a constant speed to form an electrolyte, wherein the concentration of disodium edetate in the electrolyte is 1.8g / L, Na 2 SiO 3 The concentration is 12g / L, Na 2 HPO 4 The concentration is 7g / L, nano ZrO 2 The concentration is 4g / L, the titanium alloy Ti-6Al-4V is used as the anode, the stainless steel electrolytic cell is used as the cathode, the power supply is a pulse power supply, the frequency is 600Hz, and the duty cycle is 15%. Raise the forward voltage from 0V to 330V, perform micro-arc oxidation for 2 minutes, then raise the forward voltage to 380V, perform micro-arc oxidation for 2 minutes, and finally raise the forward voltage to 400V, perform micro-arc oxidation for 7 minutes, and The treated titanium alloy Ti-6Al-4V was taken out, washed with distilled water and ...

Embodiment 2

[0040] (1) Preparation of ZrO 2 Layer micro-arc oxidation titanium alloy component 2: Add distilled water, disodium edetate, Na 2 SiO 3 、Na 2 HPO 4 , NaOH and nano ZrO 2 , stirred and dissolved at a constant speed to form an electrolyte, wherein the concentration of disodium edetate in the electrolyte is 1.8g / L, Na 2 SiO 3 The concentration is 12g / L, the concentration of Na2HPO4 is 9g / L, the concentration of nano ZrO2 is 5g / L, the titanium alloy Ti-6Al-4V is used as the anode, the stainless steel electrolytic cell is used as the cathode, the power supply is a pulse power supply, the frequency is 600Hz, and the duty cycle 20%, the micro-arc oxidation process is carried out by using the segmental voltage method, the forward voltage is raised from 0V to 330V, and the micro-arc oxidation is carried out for 2 minutes, then the forward voltage is raised to 380V, and the micro-arc oxidation is carried out for 3 minutes, and finally the positive The voltage was raised to 400V, a...

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Abstract

The invention relates to the technical field of titanium alloy micro-arc oxidation, and discloses a titanium alloy with a super-hydrophobic micro-arc oxidation wear-resistant coating, which includes the following formula raw materials: titanium alloy, nano-ZrO 2 , nano-SiO 2 , stearic acid, silane coupling agent. The titanium alloy of the superhydrophobic micro-arc oxidation wear-resistant coating is made of disodium ethylenediaminetetraacetic acid-Na 2 SiO 3 -Na 2 HPO 4 ‑NaOH is the electrolyte system, adding nano-ZrO 2 , the micro-arc oxidation process is carried out by the segmental voltage method, so that the surface of the titanium alloy forms a ZrO coating with a uniform thickness. 2 Coating, improving the wear resistance of titanium alloys, ethanol stearate and tridecafluorooctyltrimethoxysilane modified nano-SiO 2 , nano-SiO 2 Filled into the pores on the surface of the coating, enhancing the compactness of the coating, improving the strength and corrosion resistance of the coating, nano-SiO 2 Grafted strong hydrophobic long alkyl segments and perfluoroalkyl segments, increasing the ZrO 2 The roughness of the composite ceramic coating endows the surface of the titanium alloy with ZrO 2 Superhydrophobic properties of the coating.

Description

technical field [0001] The invention relates to the technical field of titanium alloy micro-arc oxidation, in particular to a titanium alloy with a super-hydrophobic micro-arc oxidation wear-resistant coating and a preparation method thereof. Background technique [0002] Titanium is an important structural metal. Titanium alloys have high strength, high heat resistance, high toughness, and fast formability. They are used in high-temperature titanium alloys for aeroengines and structural titanium alloys for airframes. High-strength titanium alloys have been further developed. Titanium alloys are mainly used to make aircraft engine compressor components, followed by structural parts of rockets, missiles and high-speed aircraft. [0003] Titanium alloy is an alloy composed of other elements based on titanium. Titanium has two homogeneous crystals: close-packed hexagonal structure α-titanium and body-centered cubic β-titanium. Alloying elements can be divided into three types a...

Claims

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Application Information

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IPC IPC(8): C25D11/26C25D21/12
CPCC25D11/26C25D21/12
Inventor 徐小玉
Owner 牡丹江申佳合金材料有限公司