What is PVD in medical terms
PVD coatings give surfaces excellent properties
PVD coatings improve the properties of surfaces in various ways. The process forms thin multi-layer coatings from individual layers from a few to 100 nanometers with very interesting properties. HÄRTHA offers the innovative process at 2 locations in Germany. Innovative technologies and tailor-made solutions are among the strengths of the HÄRTHA experts, as with the hardening processes case hardening or vacuum hardening, also with PVD coatings.
PVD coating - the process
PVD stands for Physical Vapor Depositon and provides surfaces with thin and at the same time extremely resistant nano-layers. The material is applied by evaporating a reactive gas. Depending on the composition of the reactive gas, layers of nitrides, carbides or carbonitrides are created.
PVD coatings are made through the use of various evaporation processes. This includes arc evaporation, in which the atoms and ions are released from the starting material by a strong electrical discharge and converted into the gas phase. Laser beam evaporation uses short and intense laser pulses for this, and during sputtering, the bombardment with ions atomizes the starting material and converts it into the gas phase.
Further processes for PVD coatings are thermal evaporation, electron beam evaporation or ion-assisted deposition.
Application and advantages of PVD coatings in practical use
PVD coatings have a number of positive effects on the surface properties of components. Depending on the process used, all steels and hard metals can be coated with a tempering temperature of at least 450 ° C. In the case of plasma-assisted processes, a working temperature of 50 ° C to 150 ° C is sufficient. In this case, the area of application is extended to other materials such as non-metallic ceramics or even plastics.
With a PVD coating, components receive greatly improved properties such as a very good anti-stick effect, comprehensive protection against cold welding, corrosion protection and even wear protection. In the medical-technical field, the PVD coating reduces allergic reactions. But the PVD coating also plays an important role in forming technology, toolmaking or machining technology.
PVD coatings in the HÄRTHA hardening shops
The HÄRTHA hardening shops coat workpieces for you in any size from the micro range of 2/10 millimeters to a diameter of 500 millimeters. Benefit from the numerous advantages of a PVD coating.
- - longer service life
- - reduced abrasive and adhesive wear
- - reduced use of lubricants
- - very good surface protection
- - food-safe due to bio-compatibility
- - low thermal stress due to low treatment temperatures
Contact our experts for PVD coatings. We will find exactly the solution you are looking for for efficient and effective heat treatment, coating type and material selection.
In most applications, the use of a PVD coating requires an upstream heat treatment of your components.
We would therefore be happy to advise you in order to make the best possible selection of heat treatment, type of coating and material selection for your applications.
PVD coatings are used in particular for forming technology, stamping technology, fineblanking, machining technology, precision components, tools, as well as for medical instruments and components. We coat workpiece sizes from the micro area (2/10 mm) up to Ø 500 mm. In addition to our standard solutions, we are able to develop tailor-made layers for you based on a scientific background. This means that you always get the perfect solution for your surface quality requirements!
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