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Self-propelled metal corrosion protection method and system

A metal corrosion and self-driven technology, applied in the field of metal corrosion protection, can solve the problems of replacing sacrificial anodes, cathodic protection can not be separated from external power supply, etc., achieves simple preparation process, is conducive to large-scale industrial production and practical application, and overcomes technical costs higher effect

Active Publication Date: 2018-11-30
BEIJING INST OF NANOENERGY & NANOSYST
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  • Description
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Problems solved by technology

[0004] The self-driven metal corrosion protection method involved in the present invention converts the mechanical energy or solar energy ubiquitous in the environment into electrical energy, and performs cathodic protection on metals, and the generated electrical energy injects current into the cathodic metal protection system, which can solve the problem that traditional cathodic protection cannot leave the environment. Problems with the power supply or need to replace the sacrificial anode

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  • Self-propelled metal corrosion protection method and system
  • Self-propelled metal corrosion protection method and system
  • Self-propelled metal corrosion protection method and system

Examples

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Embodiment 1

[0061] For the self-driven metal corrosion protection method involved in this embodiment, see the flow chart figure 1 ,include:

[0062] Step S1, providing a power generating component, which generates an electrical signal under the action of mechanical energy and / or solar energy.

[0063] In the metal corrosion protection method of this embodiment, power generation components can be used to convert mechanical energy such as wind energy, tides, sea waves, etc. or solar energy that are ubiquitous in the environment into electrical energy.

[0064] The power generation component in the present invention may include a friction generator utilizing friction power generation and electrostatic inductive coupling. Typical friction generators are of sliding friction type and contact separation type. Here, the sliding friction generator is taken as an example to illustrate the application of friction generators in metal corrosion protection.

[0065] For a typical structure of a frict...

Embodiment 2

[0086] In this embodiment, a rotary friction generator is provided to illustrate the influence of the output power of the friction generator on the metal corrosion protection potential.

[0087] Figure 5 The a-c in the present embodiment is the structural diagram of the rotary friction generator, including two mutually rotating parts, both parts are the turntable structure of the same periodic sector, and the two parts are the same periodic sector Turntable structure, each part is formed by lamination of friction material layer and electrode material layer. When the two parts rotate around the rotation center, the two friction materials can change between completely overlapped and completely separated. There is an alternating current signal output on the electrode of the contact setting. Such as Figure 5 In a and b, the so-called "periodic sector" refers to a plurality of fan-shaped areas with the same size and equal intervals distributed around the rotation center on the ...

Embodiment 3

[0100] This embodiment provides a method for changing the cathodic polarization potential of the corrosion system by changing the internal resistance of the corrosion medium, thereby achieving the purpose of improving metal corrosion protection.

[0101] Step S3 applies the electric signal to the metal and the counter electrode placed in the corrosive medium, specifically: placing the metal and the counter electrode in two separate corrosive media, wherein the two The corrosive medium is the same, and the two corrosive mediums are connected by a capillary filled with corrosive medium. The length of the capillary is more than 0.5m, preferably 0.5m-2m, and the diameter of the capillary is in the range of 0.3mm-1mm.

[0102] Still taking the corrosion protection of 403 stainless steel as an example, the metal corrosion protection method of this embodiment is described. In order to further increase the absolute value of the polarization potential of 403 stainless steel, the parti...

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Abstract

The present invention provides a self-driven metal corrosion protection method and system. The method converts mechanical energy / solar energy in the nature into electrical signals through a power generating unit; if the electrical signals are AC electrical signals, the electrical signals are converted into DC electrical signals and applied to the metal and counter electrodes in a corrosive medium, wherein the potential of the metal is lower than the potential of the counter electrode. The method provided by the invention is a self-driven metal cathode protection method, which overcomes the problems of external power requirement or sacrificial anode replacement in the traditional technique of cathode protection; and the method provides a low-cost and stable cathode protection technology, which can be widely applied to different corrosion systems, for the widespread problem of corrosion of metal.

Description

technical field [0001] The invention relates to the field of metal corrosion protection, in particular to a self-driven metal corrosion protection method and system for converting various energy sources existing in the environment into electric energy. Background technique [0002] Corrosion of metal materials pervades all fields of the national economy, and its hazards also pervade all industries, including metallurgy, chemical industry, energy, transportation, machinery, aerospace, infrastructure, etc. Therefore, the research on the corrosion and protection of metal materials, especially the new technology of anti-corrosion is of great significance to the development of our national economy. According to the corrosion mechanism of metal materials, it can be seen that the corrosion damage of metal materials is inseparable from the metal material and the environment (gas, liquid, solid and other media) and the interface reaction between them. Therefore, in order to improve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F13/20C23F13/06
Inventor 郭文熹潘曹峰李潇逸陈梦晓王中林林昌健
Owner BEIJING INST OF NANOENERGY & NANOSYST
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