PVD (Physical Vapor Deposition) is a highly adherent fine ceramic coating, produced using a highly ionised plasma depositing process in a vacuum chamber, where the temperatures can vary between 60° and 500 °C. The high temperatures enable coatings with a high degree of purity to be obtained, which are chemically inert and biocompatible.
The Decorative PVD coatings keep their original finish, and do not change the appearance of the articles, attributing them a controlled thickness of between 0,3 and 3,5 µm (depending to the application). Applying this coating endows the articles with greater endurance and durability, increasing the lifespan of the product.
Decorative PVD coatings are applied using a cathodic arc deposition that consists of the evaporation of the material that you intend to use as a coating (present in the “targets”) through a high-voltage electric arc. It involves the deposition of Zirconium/Titanium/Chromium or other combinations of metallic ions with reactive gases.
The material to be deposited goes from its solid state to gaseous state, condensing on the substrate of the article to be coated, forming a fine film of PVD coating (thickness between 0,3 and 3,5 µm).
The coating can also be applied through the deposition via Sputtering which consists of the vaporisation of particles from a surface (target). The material to be deposited is linked to a cathode in the “targets”, and the substrate is linked to an anode. A rare gas, usually Argon, bombards the targets and the impact of its ions causes the atoms of their surface to be ejected. These atoms are transported by plasma to the surface to be coated and where they are condensed, in several layers, forming a solid and uniform film coating.
White Gold
Gold
Copper
Chocolate
Rainbow
Dark Blue
Silver
Inox
Anthracite
Nickel
Gun Metal
Black
*In accordance with the specifications intended by the customer, it is possible to customise and adjust our standard colours, with a guarantee of mass reproducibility.
· Steel;
· Stainless steel;
· Brass*;
· Aluminium*;
· Zamak*;
· Ceramic*;
· ABS plastic*.
*For the best adhesion and resistance to corrosion, the articles should be chromium-plated beforehand.
· Compatibility with food industry and medical-surgery industry;
· Higher resistance than galvanised coatings;
· High resistance to oxidation;
· Resistance to wear and increased lifespan;
· Protection against chemical and thermal attacks;
· Anti-allergic;
· Diversity and reproducibility of the colours;
· Resistance to UV rays;
· Eco-friendly process.
· Cutlery;
. Cutting blades;
· Taps;
· Bathroom accessories;
· Door hardware;
· Decoration and furniture;
· Medical-surgical instruments;
· Watches, jewellery and fashion accessories;
· Electronic cigarettes;
. Sports equipment;
· Among others.
At Prirev we offer antibacterial and antiviral coating solutions through the application of PVD: AB20.
Certified by the German laboratory Hohenstein, based on the ISO 22196: 2011-08 standard, our AB20 coating reduces 99.9% of the main bacteria.
Certified by the international laboratory Virology Research Services, according to ISO 21702, the AB20 coating kills 99% of the SARS-CoV-2 virus in just 24 hours.
AB20 coating destroys bacteria through the presence of silver nanoparticles in the PVD film. The antimicrobial properties of silver are described in the literature, as well as its antiviral effect against SARS-CoV-2.
· High durability (over 2000 HV);
· Protects against chemical and thermal attacks;
· Durability higher than any galvanised coating;
· Resistance to corrosion and wear;
· Anti-allergic;
· Eco-friendly coating and process;
· Does not change the final finish of the articles.
· Cutlery;
· Door hardware;
· Sports equipment;
· Decoration and furniture;
· Taps;
· Among others.
Over the years we have adapted to the needs of the market, and in order to provide a complete service to our customers and partners, we have added a set of complementary services.
Velvet | Brushed | Vintage.
The application of Functional PVD coating enhances surfaces, increases the endurance and lifespan of a product, and avoids losses and consequent faults. These coatings reduce seizure, leading to better cadences and less stoppage time of the equipment.
For cutting tools, there has been a significant increase in the durability and resistance of punches and moulds. As for moulds for plastics, rubber, and injected casting of non-ferrous metals (aluminium and zamak), this coating leads to a reduction in wear and tear and corrosion, improving removal from the mould and facilitating cleaning.
The PVD coatings can be applied to most metals, ceramic surfaces and some plastics.
· Steel;
· Stainless steel;
· Brass;
· Aluminium;
· Zamak;
· Ceramic;
· ABS plastic.
· Highly durable: six times more durable than steel;
· Reduces the friction coefficient;
· Greater resistance to wear;
· Reduces and/or removes lubrication;
· Reduces production costs;
· Increases the quality and productivity of the articles;
. Does not alter the dimensions and finish of the articles (controlled thickness 1 – 2.5µm).
· Cutting tools;
· Stamping tools;
· Inlaying tools;
· Adjustment tools;
· Plastic injection moulds;
· Aluminium and zamak injection moulds;
· Normalized.
Developed in the early 1970s by NASA, WS2 (Modified Tungsten Disulphide) is a dry lubricating film that molecularly sticks to any metal surface and most polymers with just 0.5 µm thickness.
This dry lubricant resists the accumulation of carbon due to its extremely low friction coefficient, which is less than half of graphite, Moly (MoS2) and Teflon.
It supports loads of 70 Kg/mm2 (or load capacity equal to the substrate) and operates within the temperature interval from -273°C to 650°C.
Applied through pressurised air flow, this process produces a dry metallic coating without increases in temperature, binding agents or any type of adhesive. Provides 100% lubrication throughout the entire texture.
Solving problems in the moulding of plastics, robotics, food processing, shaping and cutting of metals, automobile industry, medical applications and sterile productions.
· Reduces the friction coefficient;
· Higher resistance to excessive wear;
· Reduces mechanical lubrication problems;
· Maintains the integrity of the substrate within 0.5 µm without creating overlapping layers;
· It is inert, inorganic, non-toxic, non-corrosive;
· It can only be eliminated and removed from the adherent substrate;
· Resistant to most solvents and fuels.
· Moulds and spinnerets;
· Stamping and deep drawing tools;
· Spindles;
· Engines and transmission parts;
· Pincers and cutting tools;
· Gears and industrial bearings;
· Valves and sealants;
· Among many others.
It is an innovative technological process to treat and coat surfaces, through the co-deposition of a highly ionised PVD layer and an inter-metallic lubricant with an exceptionally low friction coefficient – WS2.
The excellent results obtained with Metallic in cutting tools (reducing wear by 10 times) is explained by its tenacity; resistance to tiny cracking; durability to withstand wear through abrasion and lubrication that reduces the surface friction.
In the plastic injection moulds, as well as its excellent mould removal effect, Metallic protects the cavity surface against wear caused by loads and highly abrasive additives, the chemical attack of some resins and also marks in the steel caused by the ignition of the compressed gases in the closure zone of the material.
· Better protection against corrosion than chromium plating and nickel plating;
· Reduces surface friction through lubrication;
· Protects against wear through abrasion;
· Increases resistance and reduces wear;
· Better resistance to tiny cracking.
· Friction coefficient between 0.035 and 0.065;
· Utilisation temperature up to 650ºC;
· Thickness between 3 and 5 μm;
· Durability over 2500 HV;
· Does not change the surface finish of the articles.
PVD (Physical Vapour Deposition) is an extremely fine ceramic coating, which is highly adherent, deposited in a vacuum chamber through highly ionised plasma. Its durability is double that of hard chromium, with a low friction coefficient, which protects against chemical and thermal attacks, resistant to wear through adhesion and abrasion. PVD allows you to endow your products with greater endurance, more durability and superior quality.
All of this through an Eco-friendly process!
PVD coating does not change the finish of the article’s surface (velvet, brushed, vintage, etc). The main feature of the coating it is very fine thickness, between 0.5 and 1.5 μm, which endows it with colour and increases the chemical and mechanical resistance of the articles. As a fine layer, the PVD will not disguise any faults on the articles such as: scratches, chips, dents, etc. All these defects will remain visible after the application of the PVD layer.
Functional PVD is geared towards application in moulds and tools, among others, and its main feature is to increase the lifespan of the articles. It has no aesthetic purpose.
The main goal of Decorative PVD is to add colour, increasing the value of a given product. This can be applicable to decorative articles, as well as utility articles such as: cutlery, bathroom accessories, door hardware, etc. As well as the decorative aspect, the PVD also makes the articles more durable.
António Ferreira
Master in Mechanical Engineering
Over 15 years of experience in the PVD area.
