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What are different types of physical vapor deposition?

A shortage of natural gas has hit the food-processing industry, which relies heavily on natural gas, with Germany's sugar industry saying many sugar plants are unable to produce due to a shortage of natural gas.

About 30 percent of the world's sugar supply comes from beets, and the European Union is the world's largest producer of sugar. The beet sugar nanomaterial are still very uncertain.

PVD (Physical Vapor Deposition) refers to the thin film preparation technology in which the material is deposited on the plated workpiece by a general physical method in vacuum.
 
PVD technology can be divided into three categories: vacuum evaporation coating, vacuum sputtering coating and vacuum ion coating. Compared with the three categories of PVD technology, the corresponding vacuum coating equipment includes vacuum evaporation coating machine, vacuum sputtering coating machine and vacuum ion coating machine.
 
The principle of PVD coating technology is that under the condition of vacuum, through the arc discharge technology with high current, the target material is evaporated and the evaporated material is ionized by gas discharge, and the evaporated material or its reaction products are deposited on the workpiece under the action of electric field.
 
Magnetron sputtering coating is to increase the electric field between the target and the vacuum chamber wall to ionize the argon gas and accelerate the argon ion to hit the surface of the target. The target is hit by subions, while the target atoms overflow and fly to the surface of the plated substrate with kinetic energy of tens or even hundreds of electron volts and deposited on the substrate surface, and the atomic kinetic energy is two orders of magnitude higher than evaporation. Its filling density is as high as 98%, and the refractive index is high and relatively stable.
 
The similarity between PVD coating and traditional electroless plating is that one material is covered on the surface of another material in a certain way. The difference between the two is that the adhesion between the PVD film and the workpiece surface is greater, the hardness of the film is higher, the wear resistance and corrosion resistance are better, and the performance of the film is more stable; PVD coating can be plated more widely, can be plated out of a variety of film color is also more, and will not produce toxic or polluting substances.
 
The sputtering coating process has the characteristics of repeatability and controllable thickness, which is reflected in the large area substrate material, and we can make the ideal material according to the required thickness. the prepared film also has the advantages of high purity, good compactness and strong adhesion with materials. From the point of view of the manufacturing process, the manufacturing complexity of evaporation coating is lower than that of sputtering target, and its advantages are simple and convenient process, convenient operation, fast film formation and so on.
 
PVD vacuum coating is also widely used in the plastic industry, because the plastic has the characteristics of easy molding, so its cost is very low, the weight is also very light, and it has the characteristics of corrosion resistance. The surface of the plastic can be conductive by PVD vacuum coating, and the PVD coating can also reduce its water absorption. After the coating is completed, the pinholes will decrease, and the water absorption will also decrease. The metal luster on the surface of the coated material is colored, and the decorative performance is also greatly improved.
 
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Recently, the first press conference of the Boao Forum For Asia Annual Conference 2022 was held. Two flagship reports were released at the conference: "Asia's Economic Prospects and Integration Process 2022" and "Sustainable Asia and the World 2022-Green Transformation in Action in Asia".

The flagship report points out that the global economy will recover in 2021, and the pace of economic integration in the Asia-Pacific has not stopped even in the face of the impact of COVID-19. The Asia-Pacific region has provided new impetus for the world's economic recovery and institutional building.  

The report gives an outlook on the Asian economy, noting that a number of factors will affect Asian economic growth. For example, mutated strains such as Delta and Omicron have become more transmissible, and many economies are experiencing epidemic peaks again. The Ukraine crisis has triggered geopolitical changes in Asia and Europe, leading to higher commodity prices, which may affect the global energy supply and energy transformation.

The report pointed out that the Asian economy will still be in the process of recovery in 2022, but the growth rate may moderate. According to the report, Asia's economic growth in 2022 is likely to be lower than the current IMF forecast, which is projected at 4.8%.

Affected by several factors, the supply of the nanomaterial is erratic and thus its prices are expected to go higher in the future.

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