Surface Technology & Tribology

Lacquers

• two part epoxy coatings
• baking finishes
• ORCOMER coatings
• transparent conducting layers
• UV-coatings
• polyaniline and polypyrrole coatings
• ...

NanoCoatings

Antibacterial Films

1. photo-catalytic (TiO₂, WO3,...) or
2. chemo-active (Ag & Cu nanoparticles, layers and fibers)

on

• polymer films,
• molded parts,
• metal surfaces,
• glass,
• sanitary ware,...

Corona Treatment

Corona treatment (also referred to as ‘plasma surface treatment’) is a surface modification technique with diverse applications. For instance, it may be used to reduce the surface hydrophobicity of plastics, paper and textiles or render foils less gas-permeable.

Background: An electrical high-voltage discharge at the corona unit induces chemical processes in the surface of the treated material leading to the formation of polar groups e.g.

• with O₂ --> C=O, OH, COOH, various metastable radicals
• NH₃ --> NH₂
• with N₂ --> NH, NH₂
• with Ar --> chain breakage, radicals, followed by oxidation

In the corona unit of Attophotonics’ nano-printing-station films with a max. width of 30 cm and a length of up to 1 km can be treated.

SURFACE Tests

(Paint) Adhesion Testing

via

• cross-cut test (DIN 53151) and
• pull-off test (DIN EN 2409)
• adhesion µ-profiling of surfaces for lamination or film coating

Corrosion Testing

salt spray test (DIN 50021): standardized test to analyze corrosion resistance of coated samples
The test is performed in-house in a 450 l test chamber. Samples may be treated with NaCl-solutions, diluted acidic acid or sulfur-containing solutions (not H₂S!).

Layer Thickness Testing

• via atomic force microscopy (AFM) or
• impedance measurements

cross-cut test & corrosion test   

corrosion test chromium tubes