Cutting performance of DLC coated tools in dry machining aluminum alloys

High Energy Radial Deposition of Diamond-Like Carbon Coatings

“…Only recently, industrial applications of DLC and thin film technology have successfully replaced traditional functional coatings such as TiN in cutting machinery [2,3]. Newly tailored carbon materials appear in novel appliances, e.g.…”

“…Amongst a large number of analysis techniques that are available for investigating structural properties, Raman spectroscopy is often used as a first tool to accurately determine the sp 3 /sp 2 ratio in the DLC coatings, which is important to determine the hardness and wear resistance of the coatings [10]. Additional analysis techniques are nano-indentation, friction measurements, electron microscopy, and stoichiometry measurements [1,2,5,9].…”

Atmospheric plasma deposition of diamond-like carbon coatings

“…There is great demand for thin functional coatings in the semiconductor, optics, electronics, medical, automotive and aerospace industries [1][2][3][4][5][6][7][8][9][10][11][12][13]. As fabricated components become smaller and more complex, the properties of the materials' surface take on greater importance.…”

“…Diamond-like carbon is considered to be an amorphous material, containing a mixture of sp 2 and sp 3 bonded carbon. Based on the percentage of sp 3 carbon and the hydrogen content, four different types of DLC coatings have been identified: tetrahedral carbon (ta-C), hydrogenated amorphous carbon (a-C:H) hard, a-C:H soft, and hydrogenated tetrahedral carbon (ta-C:H) [20,24,25].…”

“…Based on the percentage of sp 3 carbon and the hydrogen content, four different types of DLC coatings have been identified: tetrahedral carbon (ta-C), hydrogenated amorphous carbon (a-C:H) hard, a-C:H soft, and hydrogenated tetrahedral carbon (ta-C:H) [20,24,25]. Possessing the highest hardness of 80 GPa, ta-C possesses an sp 3 carbon content of 80 to 88u%, and no appreciable hydrogen content whereas a-C:H soft possesses a hardness of less than 10 GPa, contains an sp 3 carbon content of 60% and a hydrogen content between 30 to 50%.…”