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Process for electric spark deposition preparation of titanium nitride-base ceramic coating

A technology of electric spark deposition and ceramic coating, applied in metal material coating process, coating, solid-state diffusion coating, etc. Widen the scope of application, low cost, strong bonding effect

Inactive Publication Date: 2006-11-22
HEBEI AGRICULTURAL UNIV.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above methods require expensive equipment, specific places, and professional technicians, which greatly increases the cost of titanium nitride coating preparation and limits its wide application in industry.

Method used

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  • Process for electric spark deposition preparation of titanium nitride-base ceramic coating
  • Process for electric spark deposition preparation of titanium nitride-base ceramic coating
  • Process for electric spark deposition preparation of titanium nitride-base ceramic coating

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Embodiment 1

[0018] A method for preparing a titanium nitride metal-based ceramic coating by reactive spark deposition, the content of which is to use titanium and its alloys as electrodes, and use the spark deposition technology in a nitrogen protective atmosphere to synthesize surface-treated coatings through in-situ reactions. A titanium nitride metal-based ceramic coating is formed on the surface of the metal substrate.

[0019] A nitrogen-enclosed device is used as a working chamber.

[0020] The electrode used is a rotating electrode with a rotation speed of 2400r / min.

[0021] The diameter of the electrode used is 3 mm.

[0022] The nitrogen purity used is 99.99%, and the supply rate is 10L / min.

[0023] The metal matrix used is 20# steel specimen.

specific Embodiment approach

[0024] The present invention adopts above-mentioned invention method, on the surface of 20# steel test piece, with the industrial TA of φ 3mm 2 Titanium wire was used as the electrode, and the titanium nitride metal-based ceramic coating was prepared by reactive electric spark deposition using high-purity nitrogen with a purity of 99.99% as the protective gas. The specific implementation is as follows:

[0025] Before the deposition operation, the test piece 2 is clamped on the workbench 4 in the nitrogen-enclosed device 1 , and the nitrogen in the gas source 13 is introduced into the nitrogen-enclosed device 1 through the gas pipe 12 . The air pressure in the nitrogen-enclosed device 1 is adjusted through the safety valve 6 , and the pressure gauge 11 is used to display the pressure in the nitrogen-enclosed device 1 .

[0026] During the deposition operation, the electric spark deposition power supply 8 is turned on, the electrode 14 on the deposition gun 10 is electrified a...

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Abstract

The invention discloses a reaction electric spark deposition preparing method of titanium nitride metal base ceramic coating, which comprises the following steps: adopting titanium and alloy as rotary electrode protected by nitrogen gas; utilizing electric spark deposition technology and home position synthesized technology to prepare titanium nitride metal base ceramic coating. The invention displays smelting connection with metal base, whose connection strength and coating hardness are high.

Description

technical field [0001] The invention belongs to the category of ceramic / metal coating preparation technology, and in particular relates to a method for in-situ synthesis of titanium nitride metal-based ceramic coating in a nitrogen atmosphere by using an electric spark deposition technique using titanium and its alloys as electrodes. Background technique [0002] Titanium nitride is a new type of cermet material, which has the characteristics of high hardness, high melting point, low friction coefficient and good chemical stability. It is a good refractory and wear-resistant material. At present, it has been widely used in the surface preparation and repair of cutting tools, anti-abrasive wear and abrasive wear parts. Researchers from various countries have done a lot of research on the preparation methods and processes of titanium nitride coatings. These methods mainly focus on physical vapor deposition (PVD), chemical vapor deposition (CVD), and laser surface gas alloying....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/10C23C26/02
Inventor 郝建军马跃进陈志强李建昌赵建国
Owner HEBEI AGRICULTURAL UNIV.
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