DLC Coated Bearing Gear Characteristics

DLCDiamond-Like Carbon (Titanium-Plated) Coating (Diamond-Like Carbon, abbreviated as DLC) is a coating that contains diamond-like components in its microstructure. The element that constitutes DLC is carbon. The different bonding methods between carbon atoms ultimately result in different substances: Diamond—carbon atoms bonded in the form of sp3 bonds; Diamond-Like Carbon (DLC)—carbon atoms bonded in the form of sp3 and sp2 bonds; Graphite—carbon atoms bonded in the form of sp2 bonds.

Characteristics of DLC Coating:

Due to its diamond-like components, DLC possesses many excellent properties: high hardness—60 GPa or above Hv4800; low friction coefficient of 0.02; excellent film density; good chemical stability; and favorable optical performance, among others. The special performance exhibited by DLC coatings applied to molds far exceeds that of other hard coatings. Stamping molds coated with DLC are primarily used in applications such as graphite cutting, cutting of various non-ferrous metals (e.g., aluminum alloys, copper alloys), and cutting of non-metallic hard materials (e.g., acrylic, fiberglass, PCB materials).
The industrial production of DLC coatings began in the late 20th and early 21st centuries. Compared to conventional hard coatings applied to molds (such as TiN, TiAlN, CrN, TiCN, etc.), it represents a brand-new coating technology. Currently, there are very few manufacturers worldwide that can effectively apply this technology. DLC is a typical representative and development direction of the new generation of hard coating technology and applications.

Coating types include: molybdenum disulfide, MOST, molybdenum disulfide coating, DLC, parylene coating, underwater paint applications, etc.