A comparative study of CrN, ZrN, NbN and TaN layers as cobalt diffusion barriers for CVD diamond deposition on WC–Co tools

Fabrication and Tribological Performance of Zr-Coated Carbide against 40Cr Hardened Steel

“…First generation hard coatings were simple binary composite materials such as TiN, ZrN, and CrN [3,4,5,6]. The successful application of the early generation hard coatings resulted in the rapid development of the next generation physical vapour deposition (PVD) multi-component composite coatings and their combinations as multilayers, which provide higher hardness and better wear resistance.…”

Microstructure evolution of thermal spray WC–Co interlayer during hot filament chemical vapor deposition of diamond thin films

“…By selecting suitable interlayers, the adverse effect of Fe can be avoided and the adhesion of diamond film will be stronger. There were dozens of interlayers reported [7][8][9][10][11] . But none of them was used in industrial scale production [12] because these interlayers can not achieve effective mechanical and thermal transition between diamond and steel [13] .…”

Effect of TiAl-based interlayer on the surface morphology and adhesion of nanocrystalline diamond film deposited on WC–Co substrate by hot filament CVD

“…The problem in the application of diamond as a surface coating material on steel-based substrate and WC-Co cermet is the deteriorated adhesive strength originating from transition metal such as Fe, Co, and Ni in the substrate, which promotes the formation of sp 2 graphitic species. The adhesion improvement of diamond film on the WC-Co substrate has been tried in many reports [3][4][5][6][7][8][9][10][11][12] such as in the removal of Co at the surface to be coated by thermal and chemical etching [3][4][5][6] and in the incorporation of various metal-and metal nitridebased interlayers [7][8][9][10][11][12], which block the diffusion of Co from the interior to the surface of the substrate to be coated.…”