PT&B SILCOR GmbH

The mobile use of fuel cells places high demands on their cost targets, reliability and power densities. These can only be realized by using thin metallic bipolar plates, which are preferably made of stainless steel, but also of aluminum and titanium alloys.

The serious disadvantage of metallic bipolar plates is the lack of stability against corrosion caused by electrochemical processes, which leads to a very limited lifetime of the fuel cells. For this reason, the coating of metallic bipolar plates is essential. PT&B SILCOR GmbH uses double-pulse magnetron sputtering (a special PVD process) for this purpose. The coating is composed of a large number of thin layers in the nanometer range, consisting of various metals, metal nitrides and the modified, highly conductive carbon SilCor®GR.

These coatings are characterized by the following properties:

• Corrosion resistance and diffusion tightness
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• High electrical conductivity and low contact resistance,

Für a cooperation in manufacturing is the PT&B SILCOR GmbH gladly available. Für inquiries please contact the management directly, details can be found on our Internet presence.

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Coatings by sputtering (PVD) and plasma CVD: contract work - coating equipment - R&D projects

The business of PT&B is plasma vacuum coatings by means of cathode sputtering (so-called „sputtering“ – a special process of physical vapor deposition PVD) and with the help of plasma enhanced chemical vapor deposition (plasma CVD). The range of services includes:

-  Development of new coatings on behalf of customers – R & D as a service

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-  Execution of coatings in contract work

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-  Development, design and manufacture of coating equipment

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SILCOR brand coatings give special advantages to various materials: reduction of friction and wear (tribological coatings), corrosion resistance to aggressive media, reduction of adhesion and sticking, as well as special electrical, optical or mechanical properties

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• diamond similar carbon SilCor®DLC and silicon carbide SilCor®SiC
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• Coatings for metallic bipolar plates
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• Corrosion protection (also metals in CFRP composites!)
• Anti-stick, antifretting, antifouling coatings
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• PVD and plasma CVD coating equipment

• Cyto- and generally biocompatible coatings according to FDA

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• Surface and vacuum technology
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• Plasma CVD coatings
• Sputter-PVD coatings
• Investigations of surfaces and coatings (topography in the nm range, nanohärts, surface energy, quantitative analysis, and many more)
• Corrosion protection (e.g. metals such as aluminum in CFRP composites!)
• Wear;protection
• Anti-stick layer