With the recent rise in international environmental awareness, major international manufacturers are requiring their supply chains to comply with green manufacturing processes. As a result, surface treatment coating technology has gradually evolved from traditional electroplating and ion nitriding technologies to more environmentally friendly vacuum coating technology. The following will further introduce DLC coating materials and application cases.
One,Introduction to Diamond-like Carbon (DLC) Coating
Diamond-like carbon (DLC) is an amorphous material with properties similar to diamond, including high hardness, wear resistance, low coefficient of friction, and smooth surface. It can be applied to various industries through different manufacturing processes.
The DLC coating structure is mainly formed by a mixture of sp3 bonded carbon atoms in diamond structure and sp2 bonded carbon atoms in graphite structure. It can be divided into hydrogen-containing DLC coating (a-C:H) and hydrogen-free DLC coating (a-C) according to the presence or absence of hydrogen, or into different subcategories based on different ratios of sp3 to sp2 bonds.
The effect of carbon doping coatings can improve properties such as residual stress, crack resistance, or adhesion. DLC coatings can be achieved in a variety of ways. For example, in PVD, carbon can be doped with other elements and sintered into a target for deposition. The doping content in the coating can be changed during the deposition process. Alternatively, carbon-containing gas can be introduced into a metal target for deposition.
Two,The low-friction properties of DLC coating applied to cylinder liners
Diamond-like carbon (DLC) coatings offer excellent wear resistance and low friction, making them suitable for a wide range of applications. Studies have shown that applying a DLC coating to cylinder liners can effectively improve performance compared to leaving them uncoated.
DLC coatings possess numerous advantages, and the automotive industry's demand for wear-resistant, high-performance automotive parts using DLC coatings continues to grow. Furthermore, DLC coatings have significant commercial applications in other fields such as biomedicine and electronics. Therefore, the future economic development of DLC coatings is highly anticipated.
