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A method of preparing up-conversion and developing corrosion-resistant coating on the surface of magnesium alloy by using plasma spraying technology

A technology of plasma and magnesium alloy, which is applied in the field of preparation of development and corrosion-resistant coatings, can solve the problems of magnesium alloy biological activity, corrosion resistance, poor X-ray development, etc., to avoid radiation damage, solve corrosion problems, and improve biological activity. Effect

Active Publication Date: 2020-10-16
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the biological activity, corrosion resistance and X-ray development of existing magnesium alloys are poor, which restricts the application of magnesium alloys as medical implant materials, and provides a method of using plasma spraying technology on the surface of magnesium alloys. Method for preparing up-conversion developing corrosion-resistant coating

Method used

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  • A method of preparing up-conversion and developing corrosion-resistant coating on the surface of magnesium alloy by using plasma spraying technology
  • A method of preparing up-conversion and developing corrosion-resistant coating on the surface of magnesium alloy by using plasma spraying technology
  • A method of preparing up-conversion and developing corrosion-resistant coating on the surface of magnesium alloy by using plasma spraying technology

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specific Embodiment approach 1

[0023] Specific Embodiment 1: This embodiment is a method for preparing an upconversion and development corrosion-resistant coating on the surface of a magnesium alloy using plasma spraying technology, which is completed in the following steps:

[0024] 1. Magnesium alloy pretreatment:

[0025] ①. Use 180#SiC sandpaper, 600#SiC sandpaper, 1000#SiC sandpaper and 2000#SiC sandpaper to polish the magnesium alloy in sequence to obtain a bright magnesium alloy;

[0026] ②. Use a dry sandblasting machine to perform sandblasting on the surface of the bright magnesium alloy to obtain a rough surface magnesium alloy;

[0027] 2. Ultrasonic degreasing: immerse the magnesium alloy with rough surface in acetone, and then ultrasonically treat it at an ultrasonic power of 800W-1200W for 10min-30min to obtain the magnesium alloy after ultrasonic treatment; rinse the magnesium alloy after ultrasonic treatment with distilled water 3 to 5 times, and then use a hair dryer to dry to obtain a deg...

specific Embodiment approach 2

[0038] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: the sand grains used in the sand blasting treatment described in step ② are 280# white corundum sand, the sand blasting pressure is 0.2MPa, and the sand blasting distance is 100cm~ 120cm, sandblasting time is 0.5min ~ 1min. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0039] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the ball-to-material ratio of the ball mill described in step three is (3~6):1, and the ball milling speed is 250r / min~400r / min min, the ball milling time is 300-420 min. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for preparing an upconversion developing corrosion resistant coating on a magnesium alloy surface by using a plasma spraying technology, relates to a method for preparing the developing corrosion resistant coating, and aims to solve the problems that the biological activity, corrosion resistance and X-ray developing performance of an existing magnesium alloy are all poor, so that application of the magnesium alloy as a medical implant material is restricted. The method comprises the following steps: S1: magnesium alloy pretreatment; S2: ultrasound degreasing; S3: preparation of rare earth doped hydroxyapatite powder, and S4: plasma spraying, upconversion developing corrosion resistant coating is obtained on the magnesium alloy surface. According to the method, the bonding strength of the upconversion developing corrosion resistant coating and the matrix magnesium alloy can reach 35MPa. The method is suitable for preparing the upconversion developing corrosion resistant coating on the magnesium alloy surface.

Description

technical field [0001] The present invention relates to a method for preparing a developed corrosion-resistant coating. Background technique [0002] Biomedical materials, also known as biomaterials, are high-tech materials used to diagnose, treat, repair, or replace damaged tissues and organs, or enhance their functions. With the development of biomedicine and material science, it is hoped that the biomaterials implanted in the human body will only serve as a temporary replacement, and will gradually degrade and be absorbed by the body as the tissue or organ regenerates, so as to minimize the impact of the material on the human body. Long-term effects on the body. Because biodegradable materials are easy to decompose in vivo, their products can be metabolized and finally excreted from the body, and have no toxic and side effects on the body, they have attracted more and more attention and favor from scientists. In recent years, research on a new generation of biodegradabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/134C23C4/04C23C4/02A61L31/02A61L31/08A61L31/14
CPCA61L31/022A61L31/086A61L31/088A61L31/14A61L2420/02A61L2420/06C23C4/02C23C4/04C23C4/134
Inventor 仇兆忠王建永孙佳刘爱莲田宏
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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