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Preparation method of matrix protective coating

A protective coating and matrix technology, applied in the field of matrix protective coating preparation, can solve the problem that the wear resistance of the coating cannot meet the application requirements, and achieve excellent super-hydrophobic performance, improved wear resistance, and excellent corrosion resistance Effect

Pending Publication Date: 2022-04-22
NO 59 RES INST OF CHINA ORDNANCE IND +1
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  • Claims
  • Application Information

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Problems solved by technology

However, the wear resistance of the coating prepared by this method still cannot meet the application requirements

Method used

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  • Preparation method of matrix protective coating
  • Preparation method of matrix protective coating
  • Preparation method of matrix protective coating

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The preparation method of substrate protective coating, concrete steps are as follows:

[0028] A. Pretreatment, including:

[0029] a) Substrate preparation: take a 316L stainless steel workpiece with a size of Φ25mm*6mm, and carefully polish it with sandpaper to remove burrs, welding slag, sharp corners, etc. on the surface;

[0030] b) Sand blasting treatment: use 0.3-0.4MPa dry and clean compressed air as the power, the spray distance is 150mm, and the spray angle is 70°-90°, and the 150-mesh white corundum abrasive with multi-angular particles is sprayed onto the surface of the substrate at high speed to remove surface impurities. Thoroughly clean and roughen the surface to obtain a pre-treated surface;

[0031] B. Preparation of wear-resistant coating:

[0032] a) It will be composed of zirconia-yttria powder, namely YSZ powder (the content of yttrium oxide in the powder is 8wt%) and polytetrafluoroethylene powder (PTFE powder) according to the mass percentage o...

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Abstract

The invention belongs to the technical field of surface protection, and particularly relates to a preparation method of a matrix protective coating. The preparation method comprises a pretreatment process and a transfer-like film coating preparation process, and the transfer-like film coating preparation process comprises the following steps that YSZ powder and polytetrafluoroethylene powder are mixed, dried and cooled and then sprayed to the surface of a pretreated base body through an atmosphere plasma spraying method, the spraying parameters are set as follows: the moving speed of a spraying gun is 440-460 mm / s, the current is 550-600 A, the spraying time is 1-2 h, and the spraying time is 1-2 h; the voltage is 40-50 V, the power is 24.8-30 kW, the compressed air is 0.6-0.7 MPa, the partial carrier gas Ar delivery rate is 3-6 L / min, the partial delivery rate is 25-28 g / min, and the spraying distance is 108-112 mm. The wear resistance of the coating prepared by the method disclosed by the invention is remarkably improved; the corrosion resistance is excellent; the excellent super-hydrophobic performance is realized.

Description

technical field [0001] The invention belongs to the technical field of surface protection, and in particular relates to a preparation method of a substrate protective coating. Background technique [0002] Organic polymers generally have a low coefficient of friction, but their wear resistance is poor, their wear rate is high, and they are easy to fall off. [0003] Studies have shown that surface protection is an effective way to improve the wear resistance of the surface of organic polymer substrates. Publication number is that the patent literature of CN111701825A prepares columnar porous yttrium oxide (Y) with suspension plasma spraying (SPS). 2 o 3 ) stabilized zirconia (YSZ) as the skeleton of the ceramic material, by filling the PTFE self-lubricating polymer modified by polyacrylonitrile (PAN), and then coating the PAN-PTFE modified coating on the YSZ coating, and then negatively Press and evacuate, and then solidify. The principle is: the YSZ suspension is used a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/134C23C4/04
CPCC23C4/134C23C4/04C23C4/02C23C4/11C23C4/129
Inventor 吴护林解志文向林高旭郭锋宁海青熊欢胡素影吴帅谢浩苏虹王晓辉黄波吴迪项运良沈蕾芳
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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