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dlc@kandctech.com

The hardest, strongest, and slickest DLC is known as tetrahedral amorphous carbon, or ta-C.Such ta-C can be considered to be the "pure" form of DLC, since it consists only of sp3 bonded carbon atoms. Fillers such as hydrogen, graphitic sp2 carbon, and metals are used in the other 6 forms to reduce production expenses, but at the cost of decreasing the service lifetimes of the articles being coated.

Nanostructure of pure DLC showing the nodules ("cobblestones") in which carbon atoms are arranged in 3-dimensional diamond bonding. The scale marker is about 1% of the thichness of a human hair. Image made with electron microscopy.

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