Products
Surface Treatment Technologies
Changing the Future of Materials Through Surface Treatments (DLC, TiN)
NPR-RIKEN’s surface treatment is based on PVD and DLC technologies developed for piston rings, which are used under the harsh conditions found inside engines. As coatings, they combine the most crucial properties — high adhesion, high wear resistance, low friction, and long service life — making them ideal surface treatments not only for piston rings but also for other mechanical components.
Currently, these technologies are being applied not only to mechanical components but also to electronic components and medical device parts. We can develop and customize coatings to meet our customers’ specific needs.
DLC coating for machine parts
■Long-life, thick-film DLC: Superior performance in sliding properties and wear resistance.
・Reduces wear by more than 50% compared to CrN coating.
・Reduces 5–15 μm thickness through optimized adhesion and unique layering technology.
・Ideal for mechanical parts subject to high surface pressure and harsh lubrication conditions.
DLC coating for medical devices
■DLC developed for medical devices
・Utilizes highly biocompatible titanium in the adhesion layer, ensuring superior bonding strength.
・Ideal for sliding components in artificial joints, catheter parts, and surgical instruments.
Titanium coating for medical devices
■Titanium coating for resin materials
・Coating with medical-grade PEEK or other resin materials improves biocompatibility with cellular tissue.
・Ideal for implantable components such as spinal cages.
■Titanium coating for electronic devices
・Increased capacitance and battery life by shaping the surface into a triangular pyramid
・Ideal for components such as implantable electrodes
