Facing EU environmental limits on traditional plating, C.T.I. breaks through with a near-diamond Diamond-Like Carbon (DLC) coating — high hardness, low friction, corrosion- and wear-resistant with high thermal conductivity — backed by US and Taiwan patents.
As EU environmental regulations have taken shape, traditional electroplating has come under growing limits and challenges. These rules impose strict requirements on processes involving certain metals and chemicals, pushing many industries to seek greener, more sustainable alternatives. Amid this shift, C.T.I. has risen quickly with its innovative Diamond-Like Carbon (DLC) coating, bringing the piston-ring market a high-performance, low-impact solution.
Diamond-Like Carbon (DLC) is an amorphous carbon material with a structure close to diamond, composed mainly of carbon and formed on a substrate surface by methods such as physical vapour deposition and chemical vapour deposition. It offers a number of outstanding properties:
In Vickers hardness testing, C.T.I.’s DLC coating reaches over 2500 (Hv0.05), markedly harder than ordinary plated materials and greatly improving wear resistance.
The friction coefficient of conventional plated coatings is usually between 0.3 and 0.4, whereas C.T.I.’s DLC coating lowers it to below 0.04. This significantly improves the performance and durability of mechanical parts, especially under high load and high speed.
DLC has excellent chemical stability, effectively resisting a wide range of corrosive media and protecting parts from damage.
Thanks to its outstanding hardness and anti-wear performance, C.T.I.’s DLC coating significantly extends the service life of mechanical parts.
DLC conducts heat well, quickly transferring the high heat produced by the piston to the cylinder wall and effectively improving the use of thermal energy.
C.T.I. has a deep research base in DLC coatings and leads the world with US patent US 905744B2 and Taiwan patent M300746. These patented technologies cover the preparation of the DLC coating and the tuning of film performance, giving C.T.I. a strong foundation for developing high-performance, highly reliable DLC products and surface-treatment services. C.T.I. has not only achieved major technical innovation but also taken on its environmental responsibility, offering the market a high-quality, eco-friendly DLC solution.
