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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1:

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

[0021] (2) Select stainless steel as the base material, cut it into a shape of 7mm×10mm×3mm, and polish it step by step with 400#, 800#, 1000#SiC sandpaper until the surface is bright, then use ethanol to remove water and acetone to remove oil. Then, 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, frequency to 600Hz, pulse width to 200μs, electrode rotation speed to 1500r / min, argon flow rate to 8L / min, deposition The time is 8min. A Ti coating with a thickness of 16μm can be formed on the surface of the stainless steel. The surface of the titanium coating is bright, uniform and dense.

[0023] (4) Put ...

Example Embodiment

[0025] Example 2:

[0026] The operation methods of step (1) and step (2) are 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, frequency to 400Hz, pulse width to 150μs, electrode rotation speed to 1000r / min, argon flow rate to 5L / min, deposition The time is 6min. A Ti coating with a thickness of 13μm can be formed on the surface of the stainless steel. The surface of the titanium coating is bright, uniform and dense;

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

Example Embodiment

[0030] Example 3:

[0031] TC4 titanium alloy is selected as the base material, and the operation methods of step (1) and step (2) are as shown in Example 1.

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

[0033] (4) Put the TC4 titanium alloy with Ti coating deposited into the nitriding furnace produced by Wuhan Glow Plasma Heat Treatment Equipment Co., Ltd., model MC-55AQK, for glow ion nitriding, and the selected gas is ammonia The pressure is 1100Pa, the nitriding temperature is 900℃, and the nitriding time is 3h. After the nitriding was completed, the sample was take...

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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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