Using a Laser Plasmatron to Synthesize Diamond Coatings on a Carbide Cutting Tool

Spatial distributions of the electron temperature and intensity of luminescence of molecular complex C 2 are measured in the plasma jet of an optical discharge in a mixture of argon with molecular additives, supported by continuous CO 2 laser radiation. Diamond coatings are obtained on cutting inserts of a turning tool made of WC-Co8 hard alloy by scanning a plasma jet along the surfaces of the inserts, and diagnostics of the coatings are performed.