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				 This paper presents results of investigations of WC-12%Co and WC-17%Co coatings detonation sprayed on a sintered cobalt substrate.  				 The main objective of the present work was to establish a new production route of sandwich type diamond-impregnated segments for circular sawing of stone and other construction materials.  				 Unalloyed cobalt was chosen as the substrate material. Prior to coating the specimens were made by means of hot pressing of Extrafine cobalt powder in a graphite mould.  				 The segments were then coated with WC-Co. The effects of the coating process on the thickness, microhardness, microstructure and wear resistance of the deposits were investigated.  				 The properties of the coatings were established by performing the following tests: a microstructure analysis, a point analysis of chemical composition and a linear analysis, a phase composition, a microhardness tests and abrasion resistance.

archives of metallurgy and materials

Detonation-Sprayed Wc-12%Co and Wc-17%Co Diamond-Impregnated Segments/ Natryskiwanie Detonacyjne Powłok Wc-12%Co I Wc-17%Co Na Spieki Metaliczno-Diamentowe