High temperature resistance protective coating and preparing method and application thereof

A protective coating and high temperature resistant technology, which is applied in the field of materials, can solve the problems of poor wear resistance and low hardness of titanium metal, and achieve the effects of improving bonding performance, improving friction and corrosion resistance, improving overall performance and service life

Active Publication Date: 2017-07-07
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problems of low hardness and poor wear resistance of titanium metal are becoming increasingly prominent in its application.

Method used

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  • High temperature resistance protective coating and preparing method and application thereof
  • High temperature resistance protective coating and preparing method and application thereof
  • High temperature resistance protective coating and preparing method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0027] Another aspect of the embodiments of the present invention provides a method for preparing a high temperature resistant protective coating, comprising the steps of:

[0028] (1) The target material is Ti target, and the working atmosphere is N 2 , using arc ion plating technology to deposit a TiN transition layer on the surface of the substrate;

[0029] (2) Simultaneously use Al target and Al 67 Ti 33 The target is the target material, and the AlTiN coating is continuously deposited on the TiN transition layer by arc ion plating technology.

[0030] The preparation method uses the Ti target as the Ti source of the transition layer TiN, and adopts high-purity N 2 As a reaction gas, it is ionized and combined with Ti element to deposit a hard TiN transition layer on the substrate surface; using pure Al target and AlTi target as the source of Al and Ti elements for preparing AlTiN coating, by controlling the pure Al target and AlTi target respectively The current of t...

Embodiment 1

[0044] Example 1: please combine figure 2 As shown, the preparation method of the high temperature resistant protective coating of the present embodiment comprises the following specific steps:

[0045] (1) Pre-plating treatment

[0046] Put the high-speed cutting tool as the matrix into petroleum ether, and use ultrasonic agitation to clean it for 30 minutes. After removing the oil on the surface of the high-speed cutting tool, put it in acetone and ultrasonically clean it for 20 minutes, then ultrasonically clean it in absolute ethanol for 15 minutes, and finally take it out with Blow dry with nitrogen;

[0047] (2) Bias reverse sputter cleaning

[0048] Put the high-speed cutting tool after the above treatment into the chamber, heat the temperature of the reaction chamber to 400°C, and pre-evacuate the backside vacuum to 4.00×10 -3 Pa. Introduce high-purity Ar (purity ≥ 99.99%), flow rate 100sccm, turn on the DC power supply of Ti target (purity ≥ 99.9%), set the targe...

Embodiment 2

[0057] Embodiment 2: The substrate in the preparation method of the wear-resistant protective coating of this embodiment is the titanium alloy heat exchanger plate in the marine key parts, which includes the following specific steps:

[0058] (1) Utilize the method for embodiment 1 step 1 to implement pre-plating treatment to the titanium alloy heat exchanger plate;

[0059] (2) Utilize the method for embodiment 1 step 2 to implement bias reverse sputtering cleaning to the titanium alloy heat exchanger plate;

[0060] (3) Utilize the method for embodiment 1 step 3 to deposit hard TiN transition layer to titanium alloy heat exchanger plate;

[0061] (4) An arc ion plating system is used to deposit an AlTiN coating on the surface of the TiN transition layer titanium alloy heat exchanger plate. The target material used is still a group of metal Al targets (purity ≥ 99.9%), and two groups of Al 67 Ti 33 Target, in the state of uninterrupted vacuum coating, the base vacuum of the...

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Abstract

The invention discloses a high temperature resistance protective coating and a preparing method and application thereof. The high temperature resistance protective coating comprises a TiN transition layer and an AlTiN coating formed on the TiN transition layer; and in addition, in the AlTiN coating, and the ratio of the Al atom number to the sum of the Ti atom number and the Al atom number is larger than 0.67 and smaller than 0.9. The preparing method includes the steps that a Ti target is selected as a target material, the working atmosphere is N2, an arc ion plating technology is adopted for deposition of the TiN transition layer on the substrate surface; and meanwhile, an Al target and an Al67Ti33 target serve as target materials, and the arc ion plating technology is adopted for deposition of the AlTiN coating on the TiN transition layer continuously. According to the high temperature resistance protective coating, the aluminum content in the AlTiN coating is high, the Al / Ti proportion is adjustable, the oxidation resistance temperature can reach 900 DEG C, the excellent high-temperature oxidation resistant performance and corrosion resistant performance are achieved, and therefore the comprehensive performance of the AlTiN coating, a high-speed cutter and titanium alloy parts is effectively improved, and the service life of the AlTiN coating, the high-speed cutter and the titanium alloy parts is effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a high-temperature-resistant protective coating and its preparation method and application. The coating is especially suitable for the application of cutting tools under severe conditions such as high-speed dry cutting, and improves the performance of titanium alloy parts in marine environments. Corrosion resistance. Background technique [0002] In the metal cutting process, the surface wear of high-speed cutting tools is serious, and the service life of the tools is reduced. In order to reduce tool wear, improve tool life, processing efficiency and precision, surface coating treatment has become an important way to improve tool performance. [0003] TiAlN coating has high hardness, high wear resistance and excellent high temperature oxidation resistance, and is suitable for high-speed cutting of high-alloy steel, titanium alloy, stainless steel and other material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/32C23C28/04
CPCC23C14/0617C23C14/325C23C28/04C23C28/044
Inventor 李金龙牛瑞丽王永欣叶育伟鲁侠王立平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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