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Cr-doped DLC (diamond-like carbon) coating with anticorrosion and antifriction properties and preparation method

An anti-corrosion and coating technology, applied in coating, metal material coating process, ion implantation plating, etc., can solve the problems of poor surface roughness and cannot be completely eliminated

Inactive Publication Date: 2013-02-06
XIAN HAOYUAN COATING TECH
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  • Summary
  • Abstract
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Problems solved by technology

However, due to the limitations of the preparation principle itself, the droplets in the arc ion plating coating cannot be completely eliminated, resulting in a loose coating structure and poor surface roughness.

Method used

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  • Cr-doped DLC (diamond-like carbon) coating with anticorrosion and antifriction properties and preparation method

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Embodiment Construction

[0022] This embodiment provides a method for preparing a Cr-doped DLC coating on the surface of high-speed steel with anti-corrosion and anti-friction properties. It should be noted that the Cr-doped DLC coating prepared by the method of the present invention can be used on any cutting tool , molds and mechanical wear-resistant parts selected materials, not limited to this embodiment.

[0023] The concrete preparation process of this embodiment is:

[0024] (1) A high-speed steel substrate (material: W18Cr4V) with a hardness of HRC=60 (material: W18Cr4V) quenched at 1170°C and tempered at 550°C was used as a sample. After surface degreasing and polishing, it was immersed in acetone for ultrasonic cleaning and alcohol dehydration.

[0025] (2) Put the pretreated sample into the arc and magnetron sputtering composite coating equipment. Such as figure 1 As shown, the arc and magnetron sputtering composite coating equipment at least includes a vacuum chamber 1, a turret 2, a bia...

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Abstract

The invention discloses a method for preparing a corrosion-resistant antifriction Cr-doped DLC (diamond-like carbon) coating. The method comprises the steps of placing a pretreated substrate on a rotating stand rod of arc and magnetron sputtering composite deposition equipment, taking a post arc Cr target as a Cr source and three pairs of flat targets C targets as C sources, and installing the three pairs of flat targets C on the inner wall of a furnace body in an opposite manner; adopting high-purity Ar as a main ionization gas to guarantee an effective glow discharge process; and adopting high-purity N2 as a reacting gas, ionizing the reacting gas and combining the reacting gas with Cr and C elements to deposit on the surface of the substrate so as to form the Cr-doped DLC coating. The prepared Cr-doped DLC coating has a smooth and compact surface, hardness of 20 GPa, binding force with the substrate of 80N, coating thickness of 2.0 micrometers, and excellent corrosion resistance and antifriction performance.

Description

technical field [0001] The invention belongs to the field of coating material preparation, and in particular relates to a preparation method of a Cr-doped diamond-like coating (hereinafter referred to as DLC coating) with anti-corrosion and friction-reducing properties. Background technique [0002] Hard coatings such as TiN, TiAlN, TiSiN, etc. generally have high hardness, wear resistance and oxidation resistance, and have broad application prospects in the field of surface protection of cutting tools, molding dies and mechanical parts. [0003] In recent years, in order to reduce the fuel consumption of automobile and motorcycle engines, it is becoming more and more important to solve the problem of friction reduction and corrosion of engine sliding parts such as pistons, piston rings and cylinders. In addition, various mechanical bearing transmission systems and high-speed oil-free sewing machine components such as bearing inner and outer rings, cages, rolling elements, n...

Claims

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Application Information

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IPC IPC(8): C23C14/22C23C14/06
Inventor 马胜利
Owner XIAN HAOYUAN COATING TECH
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