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Process for preparing (Ti,Al)BN ceramic amorphous-nanocrystalline wear-resistant anti-corrosion composite coating

A composite coating and nanocrystalline technology, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of poor bonding force of the substrate and high brittleness of the coating, so as to improve the overall performance and simplify the The effect of the preparation process

Inactive Publication Date: 2012-09-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of high brittleness of titanium-boron compound coating and poor adhesion to the substrate limit its application.

Method used

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  • Process for preparing (Ti,Al)BN ceramic amorphous-nanocrystalline wear-resistant anti-corrosion composite coating
  • Process for preparing (Ti,Al)BN ceramic amorphous-nanocrystalline wear-resistant anti-corrosion composite coating
  • Process for preparing (Ti,Al)BN ceramic amorphous-nanocrystalline wear-resistant anti-corrosion composite coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The process of preparing (Ti,Al)BN ceramic-based amorphous-nanocrystalline wear-resistant and corrosion-resistant composite coating, the steps are:

[0020] a. First, double-cathode plasma sputtering deposition is carried out, and the process parameters are as follows: target voltage 800 V, workpiece voltage 400 V, distance between target and workpiece 20 mm, working pressure 35 Pa, deposition temperature 500 °C;

[0021] b. Then perform ion nitriding, the process parameters are as follows: workpiece voltage 800V, workpiece temperature 500°C, working pressure 35Pa, nitrogen partial pressure 0.5 Pa; ion nitriding for 1.5 hours.

[0022] c. The type of target material for sputtering: the mass ratio of the ingredients prepared by the hot isostatic pressing process is Ti:B:Al=6:3:1 powder metallurgy sintered plate;

[0023] d. The type of workpiece material: titanium alloy.

[0024] figure 1 The composition ratio of Ti:B:Al=6:3:1 powder metallurgy sintered plate prep...

Embodiment 2

[0028] The process of preparing (Ti,Al)BN ceramic-based amorphous-nanocrystalline wear-resistant and corrosion-resistant composite coatings is as follows: first, double-cathode plasma sputtering deposition is carried out, and the process parameters are as follows: target voltage 1000 V, workpiece voltage 450 V , the distance between the target and the workpiece is 30 mm, the working pressure is 45Pa, and the deposition temperature is 650°C; then ion nitriding is performed, and the process parameters are as follows: the workpiece voltage is 850V, the nitriding temperature is 600°C, the working pressure is 45Pa, and the nitrogen partial pressure is 1 Pa; 2 hours; the type of sputtering target: the mass ratio of components prepared by hot isostatic pressing is Ti:B:Al=6:3:1 powder metallurgy sintered plate; the type of workpiece material: titanium alloy. The properties of the resulting coating were slightly lower than in Example 1.

[0029]

Embodiment 3

[0031] The process of preparing (Ti,Al)BN ceramic-based amorphous-nanocrystalline wear-resistant and corrosion-resistant composite coatings is as follows: first, double-cathode plasma sputtering deposition is carried out, and the process parameters are as follows: target voltage 500 V, workpiece voltage 300 V , the distance between the target and the workpiece is 10 mm, the working pressure is 20 Pa, and the deposition temperature is 450°C; then ion nitriding is carried out, and the process parameters are as follows: the workpiece voltage is 650V, the nitriding temperature is 450°C, the working pressure is 20Pa, and the nitrogen partial pressure is 0.1 Pa; 1 hour; the type of sputtering target: the mass ratio of components prepared by hot isostatic pressing is Ti:B:Al=6:3:1 powder metallurgy sintered plate; the type of workpiece material: titanium alloy. The properties of the resulting coating were slightly lower than in Example 1.

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Abstract

The invention discloses a process for preparing a (Ti,Al)BN ceramic amorphous-nanocrystalline wear-resistant anti-corrosion composite coating. The process comprises the following steps of: performing dual-cathode plasma sputtering deposition; performing ionic nitriding, wherein the sputtered target is a powder metallurgy sintered plate of which the mass ratio of Ti to B to Al is 6:3:1, and which is prepared by a hot isostatic pressure process, and a workpiece material is titanium alloy. By a dual-cathode plasma sputtering technology, the (Ti,Al)BN amorphous-nanocrystalline composite coating is generated in situ by adjusting the ratio of the components of a target to gas. A preparation process is simplified, and the whole performance of the coating is improved.

Description

Technical field: [0001] The invention provides a new method for in-situ generation of (Ti, Al) BN ceramic-based amorphous-nanocrystalline wear-resistant and corrosion-resistant coating. It is suitable for the preparation of advanced surface high-strength toughness, high wear-resistant and corrosion-resistant composite materials on the surface of titanium alloys, involving metal-nonmetal plasma sputtering deposition technology, ion nitriding technology, in-situ synthesis and types of deposition materials. Background technique [0002] As an important structural material, titanium and titanium alloys have the advantages of low density, high specific strength, strong corrosion resistance and stable medium temperature performance, so they are widely used in military and civilian fields. However, titanium and titanium alloys have poor wear resistance and are easily corroded in reducing acid solutions, which restrict their application range. Wear and corrosion are the main failur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/36C23C14/06C23C14/14C23C8/36
Inventor 徐江
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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