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Diamond-like carbon film on surface of easy-to-rust metal piece and preparation method of diamond-like carbon film

A technology of diamond film and metal parts, which is applied in metal material coating process, ion implantation plating, coating, etc., can solve the problems of coating defects, difficult to grow dense DLC coating on metal wire drawing/sandblasting surface, etc., to achieve The effect of uniform thickness, improved diffraction, and improved ionization rate

Active Publication Date: 2016-08-31
广州今泰科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This phenomenon shows that the existing DLC ​​preparation technology is difficult to grow a DLC coating with high density and excellent continuity on the metal wire drawing / sandblasting surface
Because the existing traditional low-temperature DLC preparation method is physical vapor deposition (PVD) or ion-enhanced chemical vapor deposition (PECVD), the obtained carbon particles move almost in a straight line under the action of a bias electric field, resulting in a "angle of view" Effect, charged particles also have a "tip effect", so coating defects will inevitably occur at the grooves and pits of wire drawing / sandblasting

Method used

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  • Diamond-like carbon film on surface of easy-to-rust metal piece and preparation method of diamond-like carbon film
  • Diamond-like carbon film on surface of easy-to-rust metal piece and preparation method of diamond-like carbon film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: the surface treatment of 17-4H metal test piece

[0033] After the 17-4H steel test piece with the three-dimensional dimensions of length, width and thickness of 100mmx30mmx2mm is polished, half of the polished surface is brushed, and then the surface is treated in the following order.

[0034]1) After the 17-4H steel test piece is cleaned in the cleaning line, it is dried with oil-free compressed air, hung on the fixture, and put into the hauzer flexicoat 850 vacuum coating device; the magnetron sputtering target is a pair of intermediate frequency Cr twins target. The cleaning line adopts multi-step multi-tank equipment cleaning, including degreasing-rinsing-ultrasonic cleaning-rinsing-acidic solution cleaning-alkaline solution neutralization-rinsing-deionized water rinsing-preservative rinsing and other cleaning steps.

[0035] 2) Close the door of the vacuum chamber, and start the workpiece holder to rotate; the vacuum chamber is pumped to a vacuum lo...

Embodiment 2

[0040] Embodiment 2: the surface treatment of 45A steel test piece

[0041] After the 45A steel test piece with the three-dimensional dimensions of length, width and thickness of 100mmx30mmx2mm is polished, half of the polished surface is sandblasted, and then the surface is treated in the following order.

[0042] 1) After the test piece is cleaned in a special cleaning line, it is dried with oil-free compressed air, mounted on a fixture, and placed in a hauzer flexicoat 850 vacuum coating device; the magnetron sputtering target is a pair of intermediate frequency Ti twin targets. The cleaning line adopts multi-step multi-tank equipment cleaning, including degreasing-rinsing-ultrasonic cleaning-rinsing-acidic solution cleaning-alkaline solution neutralization-rinsing-deionized water rinsing-preservative rinsing and other cleaning steps.

[0043] 2) Fix the pretreated workpiece on the workpiece rack, close the door of the vacuum chamber, and start the workpiece rack to rotate;...

Embodiment 3H13

[0048] The surface treatment of embodiment 3H13 die steel test piece

[0049] After the H13 steel test piece with the three-dimensional dimensions of length, width and thickness of 100mmx30mmx2mm is polished, half of the polished surface is sandblasted, and then the surface is treated in the following order.

[0050] 1) After the test piece is cleaned in a special cleaning line, it is dried with oil-free compressed air, mounted on a fixture, and placed in a hauzer flexicoat 850 vacuum coating device; the magnetron sputtering target is a pair of intermediate frequency Cr twin targets. The cleaning line adopts multi-step multi-tank equipment cleaning, including degreasing-rinsing-ultrasonic cleaning-rinsing-acidic solution cleaning-alkaline solution neutralization-rinsing-deionized water rinsing-preservative rinsing and other cleaning steps.

[0051] 2) Fix the pretreated workpiece on the workpiece rack, close the door of the vacuum chamber, and start the workpiece rack to rotat...

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Abstract

The invention discloses a diamond-like carbon film on the surface of an easy-to-rust metal piece and a preparation method of the diamond-like carbon film. The preparation method comprises the following steps: performing pretreatment on the surface of the metal piece at first, thereby removing pollutants on the surface of the metal piece; then, fixing the pretreated metal piece on a workpiece frame, and bombarding the surface of a to-be-cleaned sample with an iron source; preparing a transition layer of 0.1-0.5 micrometer; and preparing an a-C:HDLC layer of 1-3 micrometers. The preparation method provided by the invention is different from a conventional DLC coating preparation method, and has the advantages that the ionization rate of a hydrocarbon is improved, the substrate temperature is reasonably improved, and the diffusivity and mobility of adsorbing particles on the surface of the metal piece are improved, so that carbon ions can move towards grooves or pits and the dense film can be generated even if the surface of the metal piece is a brushed / sand-blasted non-smooth surface. The diamond-like carbon film, namely the coating obtained according to the preparation method, is still excellent in corrosion resistance and film substrate adhesion.

Description

technical field [0001] The invention relates to metal surface treatment, in particular to carbon structural steel and cast iron workpiece surface diamond-like film and its preparation method after wire drawing and sandblasting treatment on the surface, so that the rust-prone metal parts have high corrosion resistance and high wear resistance features. Background technique [0002] Carbon structural steel and cast iron materials are widely used in many fields, and these materials are also easily corroded in clean atmospheric environments, not to mention working in harsh environments containing sulfur and chloride ions. Corrosion of materials and workpieces causes enormous waste and damage. It is estimated that in almost all countries, the annual loss from metal corrosion is close to 5% of the country's gross national product, or even more. How to effectively prevent metal corrosion has become a major issue of global concern. Since the realization that electrochemical corro...

Claims

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Application Information

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IPC IPC(8): C23C14/35C23C14/06C23C14/16C23C14/02
CPCC23C14/021C23C14/022C23C14/025C23C14/0605C23C14/165C23C14/35
Inventor 彭继华苏东艺
Owner 广州今泰科技股份有限公司
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