The microstructure of WC/Co hard alloys after surface laser treatment is studied. It is established that during the laser treatment of the hard alloys, the chemical interaction between the components of the WC/Co powder mixture occurs in the samples’ surface according to the reaction 3Co+3WC→(Co; W)3C+2C. High cooling rate during the laser treatment allows preserving the products of this reaction, i.e. graphite inclusions and complex carbide (Co; W)3C to room temperature.
VereshchakaAS: ‘Some methodological principles of creation of functional coatings for cutting tools’, in ‘Modern technologies in machine building’, Kharkov, NTU “KhPI”, 2007, 210–231.
2.
OskolkovTN: ‘Electro-erosion coating on hard-alloy product’, Izv. Samara Sci. Centre RAS, 2009, 5, 320–323.
3.
PeleshenkoKN, PovorozniukSN, BoboyAO and IvanovYF: ‘Modification of tribological properties of metal-ceramic hard alloys ion-plasma and ion beam processing’, Phys. Chem. Mater. Treat., 2002, 2, 5–8.
4.
YilbasBS, AkhtarSS, MatthewsA and KaratasC: ‘Laser treatment of carbon film coated steel surface’, Surf. Eng., 2012, 28, (1), 57–67.
5.
AfoninYV, GolyshevAP, IvanchenkoAI, MalovAN, OrishichAM and Shulyat'evVB: ‘Lasing with a high quality beam in a continuous CO2-laser with a capacity of 8 kW’, Quantum Electron., 2004, 4, 307–309.
6.
TyurinAG, VeselovSV, LozinskayaAA and PopieluchPA: ‘Investigation of physical-chemical interactions occurring in WC-Co powder mixtures at liquid-phase sintering’, Polzunov Vestnik, 2012, 3/1, 92–95.
