TWM512494U - Metal structure with anti-corrosion nano film - Google Patents

Description

Anti-corrosion nano film metal structure

This creation is a nano-film metal structure, especially a nano-film metal structure with anti-corrosion effect.

When a metal or alloy is chemically or electrochemically changed by the external environment, it loses its original characteristics and causes rust, called corrosion (Corrosion), the speed of metal corrosion and its own material properties, types of corrosion factors. The concentration and pH value are closely related. The causes of corrosion factors are complex and complex. The moisture, oxygen, impurities, dust and sediments in the environment are the external environmental impact factors that cause metal corrosion. It is difficult for modern industrial society to avoid the contact of corrosion factors with metals. Since the metal is corroded, it may cause holes or even cracks in the material, which may affect the strength of the structure itself, which may cause danger in use or cause an accident.

In conventional techniques, a coating is used to protect the object to be plated to avoid contact with corrosion factors or to increase the mechanical strength of the object to be plated. At present, the coating preparation method can be divided into vacuum type and non-vacuum type. Among them, the vacuum type method such as physical sputtering, chemical gas deposition, etc., has the advantages of good mechanical properties, disadvantages, high cost, and easy acceptance. Problems such as shape restrictions. Coatings other than vacuum are coated with a large amount of resin. However, resin coatings, such as paints, are cheap and fast, but are easily attacked by high-strength corrosion factors such as acids, salts, etc. In addition, the operating temperature is relatively low, and they are more susceptible to use. limit. In recent years, polymer-based coating materials such as polytetrafluoroethylene (PTFE) have also been developed. This type of coating has good acid and alkali resistance, but has poor temperature resistance, for example, if the temperature is high for a long time (200) Working under °C), the coating may be deformed or damaged due to poor heat dissipation.

In addition, there is also an electrochemical method to prevent corrosion. For example, the metal to be protected is connected to the cathode, and the coated material is connected to the anode. After energization, the metal tweezers of the coated material are moved from the anode to the protected metal. The cathode is formed on the surface of the metal to be protected, such as chrome plating, nickel plating, galvanization, tin plating, and the like. However, this method will mostly cause environmental pollution, and the physical strength and temperature resistance are poor, and probably will not exceed 200 °C.

In order to solve the above problems, there is a need for an anti-corrosion nano film metal structure to solve the problems caused by conventional techniques.

This creation is to prepare metal oxides, nitrides and carbides into nanometer grade ceramic materials by ultrasonic or physical grinding, and can be prepared on the surface of the object to be formed in various forms to form anti-corrosion nano film metal. The structure is resistant to corrosion, abrasion and high temperature.

The nano ceramic material coating in the anti-corrosion nano film metal structure of the invention has the characteristics of high compactness, strong chemical resistance and high temperature resistance, and has good uniformity during application, and can be carried out. Large-scale application, and simple process, low cost, anti-corrosion effect can be customized according to demand, a wide range of applications, and will not pollute the environment.

In one embodiment, the present application provides an anti-corrosion nanofilm metal structure comprising a metallic material and a layer of nano ceramic material. The nano ceramic material layer is formed on a surface of the metal material, and the nano ceramic material layer has a plurality of nano ceramic particles.

In one embodiment, the nano ceramic particles contained in the nano ceramic material layer are oxidized by metal or non-metal (such as bismuth, aluminum, iron, chromium, manganese, zirconium, titanium, tungsten, boron, etc.). The substance, the carbonized substance and the nitrided substance are combined with an organic resin or an inorganic resin to form a coating capable of isolating a high corrosion factor and coated on the metal material.

In another embodiment, the plurality of nano ceramic particles further have pores between them filled with a resin material. The resin-based adhesive combines with a metal or non-metal oxide, carbide or nitride to increase the heat dissipation of the coating and help the coating not deform due to temperature.

In another embodiment, the plurality of nano ceramic particles are interconnected via sintering. Each nanometer ceramic particle has a grain size of less than 500 nm. The thickness of the nano ceramic material layer is 200 nm or more and the pencil hardness value of the nano ceramic material layer is 9H or more.

Referring to FIG. 1, in an embodiment of the present invention, the anti-corrosion nano film metal structure 1 comprises a metal material 10 and a nano ceramic material layer 11. The metal material may be of various types of structures, such as a plate-like structure, a tubular structure, a columnar structure, an irregular structure, or a processed metal part, such as a screw, a nut, a bolt, a valve body, The lock member is a metal tool or the like, but is not limited thereto, and any metal material or workpiece which is required to be subjected to anti-corrosion treatment can be used as a metal material. Further, the material of the metal material is not particularly limited, and examples thereof include steel, iron, copper, or a related alloy material thereof, and the present embodiment is described by carbon steel.

The nano ceramic material layer 11, in one embodiment, as shown in Fig. 2, is composed of a resin 111 and nano ceramic material particles 110. The resin 111 is filled between the nano ceramic particles 110. The resin 111 may be an organic resin or an inorganic resin. The material of the nano ceramic particles may be one of a metal oxide, a metal carbide, a metal nitride, a non-metal oxide, a non-metal carbide, a non-metal nitride, or at least two of the foregoing. a combination, wherein the metal material may be a material of one of aluminum, magnesium, iron, chromium, manganese, zirconium, titanium, tungsten; the non-metal material may be a material such as tantalum or boron, but is not limited thereto to form For example: alumina (Al2O3), zirconia (ZrO2), magnesium oxide (MgO), chromium oxide (Cr2O3), titanium dioxide (TiO2), cerium oxide (SiO2), tungsten carbide (WC), titanium carbide (TiC), Ceramic materials such as chromium carbide (Cr3C2), tantalum carbide (SiC), boron carbide (B4C), titanium nitride (TiN) or boron nitride (BN). Since the ceramic particulate material has good heat resistance, corrosion resistance and high hardness, and has the functions of abrasion resistance, low friction coefficient and heat conduction according to the category of each material, an appropriate formula can be selected according to different environmental corrosion factors. The nano-chemical method can be prepared into a nano-grade ceramic material by means of ultrasonic or physical grinding.

Further, the nano ceramic material layer 11 can achieve a pencil hardness level of 9H or more; the ISO level of the hundred-cell adhesion test is 0 or less; and the nano ceramic material layer 11 has a thickness of 200 nm or more. Each of the nano ceramic particles 110 in the nano ceramic material layer 11 has a grain size of less than 500 nm. It should be noted that the foregoing grain size or thickness is determined according to the use requirements, and those skilled in the art can select a suitable thickness or particle size as needed, and thus are not limited by the foregoing range.

The structure of FIG. 2 formed by the mixing of the resin 111 and the nano ceramic particles 110 can increase the heat dissipation performance of the coating and help the nano ceramic material layer 11 not to be deformed by temperature. In an embodiment, such The structure can withstand temperatures up to 800 ° C or higher, in an embodiment about 800 to 1200 ° C. The material mixed with the resin 111 and the nano ceramic particles 110 can be formed on the surface of the metal material 10 by a conventional coating method such as air pressure spraying, ultrasonic spraying or electrostatic spraying, and then naturally dried. form. Since the particle size of the nano ceramic material particles formed by nano-materials such as metal or non-metal oxides, carbides or nitrides can be made dense, the surface of the metal material must be filled for various reasons. For example: processing, the resulting gap.

In another embodiment, as shown in FIG. 3, in this embodiment, the resin is removed and sintered by baking the structure of FIG. 2 through a baking oven or a fire source, so that the nano ceramic material layer 11 is The pores 112 between the nano ceramic particles 110 are reduced to form a denser nano ceramic material layer 11 structure.

The anti-corrosion film formed by the nano ceramic material layer 11 of the present invention is as shown in the following Table 1 compared with the conventional coating or stainless steel: Table 1 <TABLE border="1" borderColor="#000000" width= "85%"><TBODY><tr><td> </td><td> Stainless Steel Substrate</td><td> Paint</td><td> Teflon Paint</td><td> Nano ceramic film</td></tr><tr><td> curing time</td><td><b>no curing</b></td><td> 72~150 (minutes, Min) </td><td> 20~30 (minutes, min) </td><td> 30 (minutes, min) </td></tr><tr><td> film thickness</td> <td><b>No coating</b></td><td> 80~120 μm </td><td> 60 ± 5 μm </td><td> 20 ± 5 μm </td>< /tr><tr><td> Pencil Hardness</td><td><b>>10H</b></td><td> 1~3H </td><td> >7H </td> <td> >9H </td></tr><tr><td> Hundreds of adhesions</td><td><b>No coating</b><b>So there is no release problem</ b></td><td> ISO grade ≦3 </td><td> ISO grade ≦2 </td><td> ISO grade ≦0 </td></tr><tr><td> Impact test (10% solid content diamond sand, speed 500rpm<b>impact surface</b>) </td><td> easy to produce erosion</td><td> poor</td><td> </td><td> Good</td d></tr></TBODY></TABLE>

It can be seen from the above table that the nano ceramic material layer formed by the nano ceramic material of the present invention has high hardness, high adhesion and not easy to fall off, and solidification compared with the conventional coating or stainless steel material. The short time is beneficial to the advantages of mass production. In the sand impact test, using 10% solid content of diamond sand, impacting the substrate protected by the coating at a speed of 500 rpm, it can be seen that the nano ceramic film of the present invention is compared with other coatings or stainless steel. It is not easy to be eroded and peeled off, has good erosion resistance, and can expand its application fields, for example, in the deep sea or in areas with high-speed fluids. At the same time, the nano ceramic material layer formed by the nano ceramic material of the invention also has good salt resistance, for example, it can be immersed in a 10% saline solution at a temperature of 35 ° C, without stripping and rusting for more than 400 hours; In addition, it also has good acid resistance. For example, when it is immersed in 20% sulfuric acid (H2SO4), the film formed by the nano ceramic material layer does not release film and discolor.

In addition, due to its high temperature stability, corrosion resistance, high compressive strength and wear resistance, ceramic materials have small particle size and large specific surface area after nanocrystallization, so they can exhibit superior resistance to damage and increase. Its toughness and plasticity, as well as the pore filling effect of metal materials, improve the chemical resistance and strength of metal materials. Moreover, the nano ceramic material is more evenly dispersed, can achieve high uniformity, and can be easily mass-produced.

However, the specific embodiments described above are only used to illustrate the features and functions of the present invention, and are not intended to limit the scope of implementation of the present invention, without departing from the spirit and technology of the present invention. The equivalent changes and modifications made by the present disclosure are still covered by the scope of the following patent application.

1‧‧‧Anti-corrosion nano film metal structure
10‧‧‧Metal materials
11‧‧‧Nano ceramic material layer
110‧‧‧Nano ceramic granules
111‧‧‧Resin
112‧‧‧ pores

FIG. 1 is a schematic view showing the structure of a corrosion-resistant metal to which the present embodiment is applied. 2 is a schematic view showing a first embodiment of a nano ceramic material layer of the anticorrosive metal structure of the present embodiment. 3 is a schematic view showing a second embodiment of a nano ceramic material layer of the corrosion-resistant metal structure of the present embodiment.

1‧‧‧Anti-corrosion metal structure

10‧‧‧Metal materials

11‧‧‧Nano ceramic material layer

Claims (9)

An anti-corrosion nano film metal structure comprising: a metal material; and a nano ceramic material layer formed on a surface of the metal material, the nano ceramic material layer having a plurality of nano ceramic particles. The anti-corrosion nano film metal structure according to claim 1, wherein the nano ceramic particles are metal oxides, metal carbides, metal nitrides, non-metal oxides, non-metal carbides, non-metals. Nitride or at least two combinations of the foregoing. The anti-corrosion nano film metal structure according to claim 1, wherein the metal material further has a gap, and the nano ceramic material layer further fills the gap. The anti-corrosion nano film metal structure according to claim 1 or 3, wherein the plurality of nano ceramic particles have a plurality of pores therebetween. The anti-corrosion nano film metal structure of claim 4, wherein the plurality of pores have a resin therein. The anti-corrosion nano film metal structure according to claim 5, wherein the resin is an inorganic resin or an organic resin. The anti-corrosion nano film metal structure according to claim 1, wherein the plurality of nano ceramic particles are connected to each other via sintering. The anti-corrosion nano film metal structure according to claim 1, wherein each of the nano ceramic particles has a grain size of 500 nm or less. The anti-corrosion nano film metal structure according to claim 1, wherein the nano ceramic material layer has a thickness of 200 nm or more.