Assessment of mechanically mixed layer developed during high temperature erosion of cermets

On the Abrasion of Ultrafine WC–Co Hardmetals by Small SiC Abrasive

“…3). Besides, it also has been found that mechanically mixed layer formed on the eroded surface demonstrated lower hardness as compared with the bulk material [12]. Usually, lower hardness is associated with lower abrasion resistance of the material.…”

Mapping of impact-abrasive wear performance of WC–Co cemented carbides

“…Increasing the binder content until the optimum value in cemented carbide usually results in increased wear resistance in conditions of dynamic loading [1][2][3][4][5][6][7][8][9][10][11][12][13]. It is a well established fact, that the energy dissipated during the wear process can be transferred into the formation of the surface layer with improved wear resistance [14][15][16][17][18][19][20]. Hardmetals with medium and high binder content (45 wt%) easily adapt to the wear conditions due to possible shifting or re-embedding of ceramic grains and the availability of a spaces between grains that may be additionally reinforced by products of wear process, which leads to the formation of a mechanically mixed surface layer (MML) [19][20][21][22][23].…”

“…It is a well established fact, that the energy dissipated during the wear process can be transferred into the formation of the surface layer with improved wear resistance [14][15][16][17][18][19][20]. Hardmetals with medium and high binder content (45 wt%) easily adapt to the wear conditions due to possible shifting or re-embedding of ceramic grains and the availability of a spaces between grains that may be additionally reinforced by products of wear process, which leads to the formation of a mechanically mixed surface layer (MML) [19][20][21][22][23]. Under the dynamic conditions, the binder metal from the subsurface layer is squeezed towards the surface, resulting in a rearrangement of WC grains and the reduction of the mean free path in the subsurface layer [5,24,25].…”

“…Under the dynamic conditions, the binder metal from the subsurface layer is squeezed towards the surface, resulting in a rearrangement of WC grains and the reduction of the mean free path in the subsurface layer [5,24,25]. An excessive (420 wt%) binder content results in high abrasive wear rates due to the facilitated access of the fine abrasive particles [19,20].…”

The effect of fluid viscosity on the erosion wear behavior of Ti(C,N)-based cermets

“…They are considered especially suitable as components for applications as pumps and valves in numerous industrial processes, such as oil extraction and sediment transport. In order to accurately predict life and structural response, it is not surprising that this erosion wear effect has become an important topic as the utilization of cermets as engineering materials increases [5][6][7].…”