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Preparation method of high-hardness aluminum-titanium ceramic film on steel surface

A ceramic film, aluminum-titanium technology, applied in the field of preparation technology of high-hardness aluminum-titanium ceramic film on steel surface, can solve the problems of insufficient strength and low mold surface performance, and achieve the effect of uniform thickness, low cost and easy implementation

Active Publication Date: 2016-08-24
东阳市广信钢带有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation of a high-hardness aluminum-titanium ceramic film on the steel surface with improved steel hardness, good surface wear resistance and good high-temperature oxidation resistance in order to solve the defects of low surface performance and insufficient strength of the existing mold. craft

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a high-hardness aluminum-titanium ceramic film on a steel surface, the preparation method comprising the following steps:

[0026] a) Steel surface pretreatment: degrease the steel in a nitrogen atmosphere at 150°C for 10 minutes, then soak it in rust removal solution for 5 minutes to remove rust, and finally dry the steel in a nitrogen atmosphere at 50°C for 3 minutes; 100L derusting solution is composed of the following components and contents: mass fraction 3% sulfuric acid, 3g / L rhodine, 3g / L urotropine, 10g / L phosphoric acid, and the balance is water;

[0027] b) Ion plating: Put the steel obtained in step a) into the vacuum coating chamber, and vacuum the vacuum chamber until the vacuum degree of the vacuum chamber reaches 1.0×10 -5 After Torr, gradient coating is carried out, first under the conditions of bias voltage 400U / V, target current 0.3I / A, Ar flow rate 40sccm and OEM value 0 for 10 minutes, and then under the conditions of bias vol...

Embodiment 2

[0030] A method for preparing a high-hardness aluminum-titanium ceramic film on a steel surface, the preparation method comprising the following steps:

[0031] a) Steel surface pretreatment: degrease the steel in a nitrogen atmosphere at 175°C for 12 minutes, then immerse it in rust removal solution for 8 minutes to remove rust, and finally dry the steel at 60°C in a nitrogen atmosphere for 4 minutes; 100L derusting solution is composed of the following components and contents: mass fraction 4% sulfuric acid, 4g / L rhodine, 4g / L urotropine, 12g / L phosphoric acid, and the balance is water;

[0032] b) Ion plating: Put the steel obtained in step a) into the vacuum coating chamber, and vacuum the vacuum chamber until the vacuum degree of the vacuum chamber reaches 1.0×10 -5 After Torr, gradient coating is carried out, first under the conditions of bias voltage 410U / V, target current 0.4I / A, Ar flow rate 45sccm and OEM value of 0 for 12 minutes, and then under the conditions of bi...

Embodiment 3

[0035] A method for preparing a high-hardness aluminum-titanium ceramic film on a steel surface, the preparation method comprising the following steps:

[0036] a) Steel surface pretreatment: degrease the steel in a nitrogen atmosphere at 200°C for 15 minutes, then immerse it in rust removal solution for 10 minutes to remove rust, and finally dry the steel in a nitrogen atmosphere at 70°C for 5 minutes; 100L derusting solution is composed of the following components and contents: 5% sulfuric acid by mass fraction, 5g / L rhodine, 5g / L urotropine, 15g / L phosphoric acid, and the balance is water;

[0037] b) Ion plating: Put the steel obtained in step a) into the vacuum coating chamber, and vacuum the vacuum chamber until the vacuum degree of the vacuum chamber reaches 1.0×10 -5After Torr, gradient coating is carried out, firstly under the conditions of bias voltage 420U / V, target current 0.5I / A, Ar flow rate 50sccm and OEM value 0 for 15 minutes, then under the conditions of bias...

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Abstract

The invention relates to a method for preparing a high-hardness aluminum-titanium ceramic film on a steel surface. The preparation method includes: degreasing, rust-removing and drying the steel material to be coated; ion-plating aluminum-titanium on the pretreated steel material; and then performing Oxidation treatment, forming high hardness Al on the steel surface 2 o 3 / TiO 2 Composite ceramic membrane. The invention has simple production equipment, easy implementation, simple pretreatment, high production efficiency, low cost, and no pollution to the environment; the prepared aluminum-titanium ceramic film on the surface of the steel has high bonding strength with the substrate, and the hardness of the film layer is higher than HV800, which is wear-resistant Good performance, good high temperature oxidation resistance; uniform thickness of ceramic film, ceramic phase is a stable phase, and the process is irreversible.

Description

technical field [0001] The invention relates to a coating manufacturing process, in particular to a preparation process of a high-hardness aluminum-titanium ceramic film on the steel surface with high hardness, uniform thickness and strong substrate bonding force. Background technique [0002] The use of molds to process and form parts has a series of advantages such as high efficiency, good quality, low cost, material saving, and good stability. Therefore, molds have become indispensable process equipment for large-scale production in modern processing and manufacturing industries. play an extremely important role. The hard coating has the function of reducing friction and wear on the surface, which can improve the reliability and life of cutting tools, molds and mechanical parts, etc., and achieve the purpose of saving energy and improving production efficiency. In the past ten years, the application of hard coating has been more and more researched and applied as an impo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/32C23C14/58C23C14/08
Inventor 楼白杨彭含笑
Owner 东阳市广信钢带有限公司
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