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The pvd coating machine mainly refers to a type of coating that needs to be carried out under a higher vacuum, including many types, including vacuum ion evaporation, magnetron sputtering, MBE molecular beam epitaxy, PLD laser sputtering deposition and many other types. The main idea is divided into evaporation and sputtering.
Vacuum coating technology is generally divided into two categories, namely physical vapor deposition (PVD) technology and chemical vapor deposition (CVD) technology.
The physical vapor deposition technology refers to the method of vaporizing the plating material into atoms, molecules or ionizing them into ions under vacuum conditions using various physical methods, and directly depositing them on the surface of the substrate. The preparation of hard reaction films is mostly made by physical vapor deposition. It uses a certain physical process, such as the thermal evaporation of substances, or the sputtering of atoms on the surface of the substance when bombarded by ions, to realize the transfer of atoms from the source substance to the film. Controllable transfer process. The physical vapor deposition technology has good film/base bonding force, uniform and dense film, good film thickness controllability, wide application of target materials, wide sputtering range, thick film deposition, alloy film with stable composition and repeatability Good wait for advantages. At the same time, physical vapor deposition technology can be used as the final processing technology for high-speed steel and cemented carbide thin-film tools because its processing temperature can be controlled below 500°C. Because the physical vapor deposition process can greatly improve the cutting performance of the tool, people are competing to develop high-performance and high-reliability equipment, while also expanding their application fields, especially in high-speed steel, cemented carbide and ceramic tools. More in-depth research has been conducted on the application in.
Vacuum coating is an important aspect of the vacuum application field. It is based on vacuum technology, using physical or chemical methods, and absorbing a series of new technologies such as electron beam, molecular beam, ion beam, plasma beam, radio frequency and magnetron. Scientific research and actual production provide a new process for film preparation. Simply put, the method of evaporating or sputtering metals, alloys or compounds in vacuum to solidify and deposit them on the coated object (called substrate, substrate or substrate) is called vacuum coating.
As we all know, as long as a layer of film is plated on the surface of some materials, the material can have many new and good physical and chemical properties. In the 1970s, the methods for coating the surface of objects mainly included electroplating and electroless plating. The former uses electricity to electrolyze the electrolyte, and the electrolyzed ions are plated on the surface of the substrate as another electrode. Therefore, the substrate must be a good conductor of electricity and the film thickness is difficult to control. The latter is a chemical reduction method. The membrane material must be prepared into a solution and can quickly participate in the reduction reaction. This coating method not only has poor bonding strength of the film, but also the coating is neither uniform nor easy to control, and also generates a lot of waste. Liquid, causing serious pollution. Therefore, these two coating processes, which are called wet coating methods, are greatly restricted.
Vacuum coating is a new type of coating technology developed relative to the above-mentioned wet coating method, and is usually called dry coating technology.
Compared with wet coating technology, vacuum coating technology has the following advantages:
(1) A wide selection of materials for the film and substrate, and the thickness of the film can be controlled to prepare functional films with various functions.
(2) The film is prepared under vacuum conditions, the environment is clean, and the film is not easily polluted, so a film with good density, high purity and uniform coating can be obtained.
(3) The bonding strength between the film and the substrate is good, and the film is firm.
(4) Dry coating produces neither waste liquid nor environmental pollution.
The pvd coating machine is widely used. Vacuum evaporation coating mainly includes automotive reflective nets, handicrafts, jewelry, shoes and hats, clocks, lamps, decorations, mobile phones, DVD, MP3, PDA shells, keys, cosmetics shells, toys, Christmas gifts and other industries; PVC, nylon , Metal, glass, ceramics, TPU, etc. Vacuum multi-arc ion coating equipment and vacuum magnetron sputtering coating equipment can coat various metals on the surface. For example: watch industry (strap, case, dial, etc.), hardware industry (sanitary ware, door handles, handles, doors Locks, etc.), construction industry (stainless steel plates, stair handrails, columns, etc.), precision mold industry (punch standard part molds, forming molds, etc.), tool industry (drills, cemented carbide, milling cutters, broaches, cutter heads) , Automobile industry (pistons, piston rings, alloy wheels, etc.), pens, glasses, etc.