Details Of PVD Coating Technology In The Mobile Phone Industry

- Mar 07, 2019-

Details of PVD coating technology in the mobile phone industry


PVD Coating and PVD coating machine


PVD(physical vapor deposition) coating technology is mainly divided into three categories, vacuum evaporation coating, vacuum sputtering plating and vacuum ion coating. Corresponding to the three categories of PVD technology, the corresponding vacuum coating equipment also includes vacuum evaporation coating machine, vacuum sputtering coating machine and vacuum ion coating machine. In recent ten years, the development of vacuum ion coating technology is the fastest, it has become one of the most advanced surface treatment methods. We usually say PVD coating, refers to the vacuum ion coating; Generally speaking, PVD coating machine, refers to the vacuum ion coating machine.


PVD coating (ion coating) technology, its specific principle is in the vacuum condition, the use of low voltage, large current arc discharge technology, the use of gas discharge to make the target evaporation and evaporation of substances and gases are ionized, the use of electric field acceleration, so that the evaporation of substances and their reaction products deposited on the workpiece.


PVD coating film features, the use of PVD coating technology plating out of the film, with high hardness, high wear resistance (low friction coefficient), good corrosion resistance and chemical stability, film life is longer; At the same time the film can greatly improve the appearance of the workpiece decorative performance.


PVD coating technology is an environmentally friendly surface treatment method that can truly obtain micron level coating without pollution. It can prepare various single metal films (such as aluminum, titanium, zirconium, chromium, etc.), nitride films (TiN, ZrN, CrN, TiAlN), carbide films (TiC, TiCN), and oxide films (such as TiO, etc.). PVD coating film thickness - PVD coating film thickness of micron level, thin, generally 0.3 m ~ 5 m, which decorative coating film thickness is generally 0.3 m ~ 1 m, so can almost not affect the original size of the workpiece surface to improve the various physical and chemical properties, after plating without processing.


PVD film can be plated out of the film color types - PVD film can be made of the film color is dark gold, light gold, brown, bronze, gray, black, black, seven colors. The color can be controlled by controlling the parameters in the process of coating. After the end of the coating can be used to measure the color of the relevant instruments, so that the color can be quantified, to determine whether the color of the plating meet the requirements.


The similarities and differences between PVD coating and traditional chemical electroplating (water electroplating) the similarities and differences between PVD coating and traditional chemical electroplating are that both of them belong to the category of surface treatment, and both of them make one material cover the surface of another material in a certain way. The difference between the two is: PVD coating film and the workpiece surface adhesion is greater, the film hardness is higher, wear resistance and corrosion resistance is better, the film performance is more stable; PVD coating does not produce toxic or contaminated substances.


PVD coating technology is currently the main application of the industry, the application of PVD coating technology is mainly divided into two categories: decorative coating and tool coating. The purpose of decorative plating is to improve the appearance of the workpiece decorative properties and color at the same time to make the workpiece more wear and corrosion resistance to extend its service life; This aspect applies each domain of hardware industry basically, if door window hardware, lock, defend bath hardware to wait for an industry. The purpose of tool plating is mainly to improve the surface hardness and wear resistance of the workpiece, reduce the friction coefficient of the surface, improve the service life of the workpiece; This aspect is mainly used in various cutting tools, turning tools (such as turning tool, planer, milling cutter, drill bit, etc.), various hardware tools (such as screwdriver, pliers, etc.), various molds and other products.


Main features and advantages of PVD coating (ion coating) technology -- compared with vacuum sputtering coating of vacuum evaporation coating, PVD ion coating has the following advantages:


A. Strong adhesion between the film layer and the workpiece surface, more durable and wear-resistant

B. The ion has good diffraction performance and can be plated on workpieces with complex shapes

C. The film deposition rate is fast and the production efficiency is high

D. A wide range of coating types

E. The film has stable performance and high safety (it has been approved by FDA and can be implanted in human body).


The development of PVD coating technology


PVD technology appeared in the late 1970s. The prepared films have the advantages of high hardness, low friction coefficient, good wear resistance and chemical stability. At first, the successful application in the field of high-speed steel tools has attracted great attention from the manufacturing industry all over the world. While developing high performance and high reliability coating equipment, people have also carried out more in-depth research on the coating application in cemented carbide and ceramic tools. Compared with the CVD process, PVD process temperature is low, under 600 when the bending strength of cutting tool materials; The internal stress state of the film is compressive stress, which is more suitable for the coating of cemented carbide precision and complex tools. PVD process has no adverse impact on the environment, in line with the development direction of modern green manufacturing. At present, PVD coating technology has been widely used in the coating treatment of carbide endmill, drill bit, step drill, oil hole drill, reamer, tap, indexable milling cutter, special-shaped cutter and welding cutter, etc.


PVD technology not only improves the bonding strength between thin film and tool matrix material, but also develops the coating composition from the first generation TiN to TiC, TiCN, ZrN, CrN, MoS2, TiAlN, TiAlCN, tin-aln, CNX, DLC and ta-c, etc.


Performance characteristics of PVD coating


1. Properties of coating


· metal appearance

· uniform color

· durable surfaces that maintain a permanent appearance in a variety of basic air and direct sunlight conditions.

· deep color and brightness

· economical, reduces the time and cost required to clean and polish plated brass or gold.

· harmless to environment, avoid chemical poisoning and VOC emission.

· biological compatibility


2. Coating characteristics


· excellent adhesion -- can bend more than 90 degrees without cracking or peeling (PVD film holds high adhesion and durability). Other technologies, including electroplating and spraying, are not comparable.

· can etch any conceivable design pattern.

· can be used for interior decoration or outdoor decoration

· oxidation resistance and corrosion resistance.


3.Resistance of PVD coating film


· corrosion resistance and stable chemical performance.

Resistance to acid,

· under normal environment, indoor or outdoor, it is antioxidant, does not fade, does not lose luster and does not leave traces. · it will not be damaged under normal use.

· colorfast.

· easy removal of paint and handwriting.

· in strong sunlight, salty wetlands and urban environment, no tarnish, no oxidation, no fading, no shedding and bursting.

Film color variety, the surface is fine and smooth, rich in metallic luster, never fade.

In the hot sun, humidity and other harsh environment does not change color, does not fall off, stable performance.

High resistance to wear, scratch and scratch.

Wide range of plating materials, and strong adhesion with the matrix.

High vacuum ion coating technology is really harmless to human body and ecological environment.

Economy: saves the time and cost of cleaning and polishing common copper-plated (gold) products. The PVD film can be cleaned with a soft cloth and glass cleaner.


Color series  of PVD decorative coating


PVD can be plated on stainless steel, copper, zinc aluminum alloy and other metals in gold, copper, rose gold, silver white, black, smoke gray, copper, brown, purple, blue, wine red, bronze and other colors, and according to your requirements to provide the required color and quality.


Application range


PVD technology is widely used in doors and Windows hardware, kitchen hardware, lamps and lanterns, Marine supplies, jewelry, crafts, and other decorative products processing and manufacturing.


Nowadays, PVD has become quite popular in the field of daily hardware. Many world leading hardware manufacturers have started the development and mass production of PVD products. PVD rich colors make it very easy to match, excellent anti-harsh environment, as well as easy to clean, do not fade the performance of consumers love it. IKS PVD's star product, in particular, is the copper-colored coating family, which is widely used around the world as an alternative to copper and copper-plated products.Contact with us now.