For PVD coating, high-purity, solid metals are used as layer materials. Depending on the desired properties of the coating, these metals may be, for example, titanium, aluminium, or chromium, as well as zirconium and silicon. This material is referred to as the target.

PVD coatings are suitable to function as wear-protection coatings. Frequently used basic types include titanium nitride, titanium carbonitride, and titanium aluminium nitride. An overview of coating systems and their properties can be found in our table.

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We inspect all PVD coatings visually. If you require an in-depth test, we can recommend non-destructive testing methods.

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To deposit the evaporated material onto the workpiece surface, a reactive gas is now supplied, and this combines with the metal vapours. The choice of gas has an important influence on the properties of the coating. Generally, the gas of choice is either a gas containing carbon or nitrogen. These gases deliver strong adhesion, and form nitride and oxide compounds that protect against rust and corrosion.

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The composition, thickness and properties of the coating can be controlled by the selection of the target, the process parameters, and the deposition conditions. This allows regulation of such factors as the structure and hardness of the workpiece, and also its thermal resistance.

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The desired coating thickness furthermore depends on the size and purpose of the workpiece. In principle, the coating can be up to 10 μm thick. For micro tools, on the other hand, the coating thickness is usually less than 1 μm.

For PVD coating, high-purity, solid metals are used as layer materials. Depending on the desired properties of the coating, these metals may be, for example, titanium, aluminium, or chromium, as well as zirconium and silicon. This material is referred to as the target. The composition, thickness and properties of the coating can be controlled by the selection of the target, the process parameters, and the deposition conditions. This allows regulation of such factors as the structure and hardness of the workpiece, and also its thermal resistance. The desired coating thickness furthermore depends on the size and purpose of the workpiece. In principle, the coating can be up to 10 μm thick. For micro tools, on the other hand, the coating thickness is usually less than 1 μm. There are different PVD coating methods, and these can also be combined. Those most commonly used are: Arc-PVD: During arc evaporation, an arc is created between an electrode and the coating material in order to detach particles from the target. Sputtering: The target is bombarded with magnetically deflected ions or electrons Laser: Laser beams are fired at the material in order to initiate evaporation. At Härtha, we offer sputtering and arc coating. In principle, the different techniques all follow the same sequence of steps. Evaporation During evaporation deposition, the target is heated so much that the atoms on the surface are released as gas, and thus become available for the next step. Different techniques can be used to accomplish this. At Härtha, we use the arc technique. To ensure controlled conditions and prevent interaction with air molecules, evaporation takes place in a vacuum. Reaction To deposit the evaporated material onto the workpiece surface, a reactive gas is now supplied, and this combines with the metal vapours. The choice of gas has an important influence on the properties of the coating. Generally, the gas of choice is either a gas containing carbon or nitrogen. These gases deliver strong adhesion, and form nitride and oxide compounds that protect against rust and corrosion. In order to prevent unwanted chemical reactions, this step takes place in a chemically non-reactive atmosphere. This can be achieved by using an inert gas such as argon. To ensure that the coating thickness is uniform across the entire workpiece, the workpiece is rotated about multiple axes during this step. Deposition   In the final step, the evaporated atoms of the target condense on the workpiece surface, forming a thin film coating. Wear-protection coatings at a glance PVD coatings are suitable to function as wear-protection coatings. Frequently used basic types include titanium nitride, titanium carbonitride, and titanium aluminium nitride. An overview of coating systems and their properties can be found in our table.

PVD coating is a surface treatment. To prevent changes to the microstructure and hardness, and to ensure dimensional stability, the material must be subjected to a heat treatment appropriate to the coating.

The key advantages of PVD coatings at a glance: Great dimensional stability thanks to low coating thickness High adhesive strength Increase in wear resistance and hardness Reduced friction, thanks to smooth surfaces Coating temperature up to 450 °C Any type of layer structure (mono-layer, multi-layer) Visual refinement

We inspect all PVD coatings visually. If you require an in-depth test, we can recommend non-destructive testing methods.

Before we can quote you an offer for PVD coating or find a different coating solution for you, we need you to provide us with the following information first:

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PVD coating is a surface treatment. To prevent changes to the microstructure and hardness, and to ensure dimensional stability, the material must be subjected to a heat treatment appropriate to the coating.   Since PVD coatings can be applied below 500 °C, the process is highly suitable for high-speed steels, hot worked steels, and some cold worked steels.   Even steels tempered at very low temperatures are generally suitable for coating – with special coating systems for low-temperature processes (between 250 °C and 450 °C).

Even steels tempered at very low temperatures are generally suitable for coating – with special coating systems for low-temperature processes (between 250 °C and 450 °C).

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Before we can quote you an offer for PVD coating or find a different coating solution for you, we need you to provide us with the following information first: Purpose of application Material designation Thermal pre-treatments Desired coating thickness in µm

PVD coatings are a form of surface finishing. PVD stands for Physical Vapour Deposition. The coating material is applied to the workpiece by means of evaporation. PVD coatings are used to protect the workpiece surface and improve its properties, both decoratively and functionally. These coatings stand out thanks to their brilliant colour quality. The Härtha hardening plant is your partner for all your PDV and PaCVD coating needs. Our state-of-the art technology and well-founded know-how ensure that we complete your order on time and to the highest quality. We look forward to hearing from you.

Since PVD coatings can be applied below 500 °C, the process is highly suitable for high-speed steels, hot worked steels, and some cold worked steels.

At Härtha, we offer you the PVD coating and DLC coating processes. We coat workpieces of different sizes, from the micro range to a diameter of 500 mm. In addition to standardised coatings, we also develop tailor-made solutions that will fit your specific application.

At Härtha, we offer sputtering and arc coating. In principle, the different techniques all follow the same sequence of steps.

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At Härtha, we offer you the PVD coating and DLC coating processes. We coat workpieces of different sizes, from the micro range to a diameter of 500 mm. In addition to standardised coatings, we also develop tailor-made solutions that will fit your specific application.

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In order to prevent unwanted chemical reactions, this step takes place in a chemically non-reactive atmosphere. This can be achieved by using an inert gas such as argon. To ensure that the coating thickness is uniform across the entire workpiece, the workpiece is rotated about multiple axes during this step.

During evaporation deposition, the target is heated so much that the atoms on the surface are released as gas, and thus become available for the next step. Different techniques can be used to accomplish this. At Härtha, we use the arc technique.

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Find a location near you. Our location overview shows you which Härtha locations offer PVD coating and which other metalworking processes we provide.

The hardened and ground twin base is ideal for the manual, 5-sided machining of workpieces with 3- or 4 axis machines, as the workpiece can be rotated together with the clamping device by 4x 90° in the zero-point holes of the twin base with repeat accuracy and process reliability.

PVD coatings are used across a multitude of industries and for a wide variety of components: Cutting tools Forming and shaping tools Plastic moulds Industrial components Automotive components Jewellery and watches Medical engineering Decorative and sporting applications Aluminium die casting

Find a location near you. Our location overview shows you which Härtha locations offer PVD coating and which other metalworking processes we provide.