Ten Problems in PVD Coating Processing (Part 1)- Ningbo Danko Vacuum Technology Co., Ltd.

Ten Problems in PVD Coating Processing (Part 1)

1. What is PVD coating technology?

Answer: PVD is the abbreviation of Physical Vapor Deposition in English, and it means "physical vapor deposition" in Chinese. It refers to the thin film preparation technology that uses physical methods to deposit materials on the workpiece to be plated under vacuum conditions.

2. What are the classifications of PVD technology? Are there any PVD coating machines?

Answer: PVD (physical vapor deposition) technology is mainly 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 also includes vacuum evaporation coating machine, vacuum sputtering coating machines,s and vacuum ion coating machines. In the past ten years, the development of vacuum ion plating technology is the fastest.

3: What is the specific principle of PVD coating?

Answer: Physical vapor deposition is a physical vapor reaction growth method. The deposition process is under vacuum or low gas discharge conditions. The source of the coating material is solid material. After "evaporation or sputtering", the surface of the part is formed with the base A new solid substance coating with completely different material properties.

4: What are the advantages of PVD coating compared to traditional electroless plating (water plating)?

Answer: The same point of PVD coating and traditional electroless plating is that both belong to the category of surface treatment, both of which make one material cover the surface of another material in a certain way.

The difference between the two is that the bonding force between the PVD coating film and the surface of the workpiece 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 The types of coatings are more extensive, and the colors of various coatings that can be plated are more and more beautiful; PVD coating does not produce toxic or polluting substances.

5: Can PVD coating replace chemical plating?

Answer: At this stage, PVD coating cannot replace chemical plating, and in addition to PVD coating directly on the surface of stainless steel materials, before PVD coating is performed on workpieces of many other materials (such as zinc alloy, copper, iron, etc.), Both require electroless plating of Cr (chromium) on them first. PVD coating is mainly used on some relatively high-end hardware products. For those hardware products with lower prices, chemical plating is usually performed without PVD coating.