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Metal TiN ceramic coating preparation process method

A coating and metal surface technology, applied in the field of metal surface coating preparation, can solve problems such as unsatisfactory, and achieve the effects of ensuring performance, low cost, and simple operation process

Active Publication Date: 2013-08-07
南通泓盛手套有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in the prior art, in the operation of preparing the TiN coating on the surface of the metal substrate, it is often necessary to synthesize TiN in advance, and then coat the TiN on the surface of the metal substrate, and in the process of synthesizing TiN In operation, the infiltration effect of nitrogen element infiltration into pure Ti is often unsatisfactory.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Put a Ti electrode round rod with a diameter of 5mm and a purity greater than 99.9wt% into acetone for ultrasonic cleaning to remove oil, then ethanol to remove water, and finally wash with distilled water and dry;

[0021] (2) Select stainless steel as the base material, cut it into a shape of 7mm×10mm×3mm, and use 400#, 800#, 1000# SiC sandpaper to polish step by step until the surface is bright, then use ethanol to remove water and acetone to remove oil Afterwards, rinse with distilled water and dry;

[0022] (3) Using high-energy micro-arc alloying deposition technology, adjust the equipment process parameters as follows: set the deposition voltage to 80V, the frequency to 600Hz, the pulse width to 200μs, the electrode rotation speed to 1500r / min, and the argon gas flow to 8L / min. The time is 8 minutes. A Ti coating with a thickness of 16 μm can be formed on the surface of the stainless steel, and the surface of the Ti coating is bright, uniform and dense.

[...

Embodiment 2

[0026] The operation method of step (1) and step (2) is as shown in embodiment 1,

[0027] (3) Using high-energy micro-arc alloying deposition technology, adjust the equipment process parameters as follows: set the deposition voltage to 90V, the frequency to 400Hz, the pulse width to 150μs, the electrode rotation speed to 1000r / min, and the argon gas flow to 5L / min. The time is 6 minutes. A Ti coating with a thickness of 13 μm can be formed on the surface of the stainless steel. The surface of the Ti coating is bright, uniform and dense;

[0028] (4) Put the Ti-coated stainless steel into the MC-55AQK nitriding furnace produced by Wuhan Glow Plasma Heat Treatment Equipment Co., Ltd. for glow ion nitriding, and select the gas as hydrogen and nitrogen. The mixed gas (hydrogen and nitrogen volume ratio is 3:1), the pressure is 600Pa, the nitriding temperature is 550°C, and the nitriding time is 8h. After the nitriding was finished, the sample was taken out, and a TiN coating wa...

Embodiment 3

[0031] Select TC4 titanium alloy as the base material, the operation method of step (1) and step (2) is as shown in Example 1,

[0032] (3) Using high-energy micro-arc alloying deposition technology, adjust the equipment process parameters as follows: set the deposition voltage to 70V, the frequency to 500Hz, the pulse width to 300μs, the electrode rotation speed to 1200r / min, and the argon gas flow to 10L / min. The time is 5 minutes. A Ti coating with a thickness of 11 μm can be formed on the surface of the TC4 titanium alloy. The surface of the titanium coating is bright, uniform and dense;

[0033] (4) Then put the TC4 titanium alloy that has been deposited with Ti coating into the nitriding furnace model MC-55AQK produced by Wuhan Glow Plasma Heat Treatment Equipment Co., Ltd. for glow ion nitriding, and choose the gas as ammonia gas, the pressure is 1100Pa, the nitriding temperature is 900°C, and the nitriding time is 3h. After the nitriding was finished, the samples wer...

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Abstract

According to the invention, a high energy micro-arc alloying technology and a glow plasma nitriding technology are combined to prepare a TiN coating on the surface of a metal. The process method comprises: adopting a high energy micro-arc alloying technology to deposit a layer of a pure Ti coating on the surface of a metal, wherein pure Ti with a certain specification is selected as a deposition electrode during the preparation process, and a variable thickness of the pure titanium layer can be achieved through controlling key technology parameters in the preparation process; and carrying out a nitriding treatment on the deposited pure titanium layer through a glow plasma nitriding technology to form a TiN layer, wherein during the treatment process, a furnace is adopted as an anode, the titanium layer is adopted as a cathode, ammonia gas or mixed gas of hydrogen gas and nitrogen gas is introduced, and nitrogen ions and nitrogen atoms generated from glow discharge are easily absorbed and permeated by the micro-crystallized Ti layer so as to form the TiN coating on the surface of the micro-crystallized Ti layer.

Description

technical field [0001] The invention relates to a metal surface modification process, in particular to a preparation method of a metal surface coating. Background technique [0002] At present, the surface modification of metal materials and the application of coatings on their surfaces to improve their performance are research hotspots. Among them, the cermet coating has high engineering application value due to its excellent wear resistance, high temperature oxidation resistance, low thermal expansion coefficient, high hardness, wear resistance and thermal conductivity. TiN coating is a traditional metal-ceramic coating with a golden yellow appearance, and has the characteristics of high hardness, wear resistance, corrosion resistance, oxidation resistance, high melting point and excellent electrical conductivity. It can be applied to the protection of metal surfaces, increasing the surface hardness, wear resistance, corrosion resistance and oxidation resistance of metals...

Claims

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Application Information

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IPC IPC(8): C23C24/10C23C8/36
Inventor 潘太军张保李杰汪涛
Owner 南通泓盛手套有限公司
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