Influence of CrC addition in Ni-Cr-Si-B flame sprayed coatings on microstructure, microhardness and wear behaviour

Influence of nanostructured ZrO2 additions on the wear resistance of Ni-based alloy coatings deposited by APS process

“…7 shows that nanostructured ZrO 2 additions increases the hardness of the nickel-based alloy. The same behavior was reported by other authors after addition of hard particles such as (Al 2 O 3 , CeO 2 , SiC, WC) at a nickel alloy [1,3,16]. However, MA coatings have higher hardness than Dual ones.…”

“…For example, Hou et al [15] showed the beneficial effect of nano-Al 2 O 3 particles on the microstructure and wear resistance of a nickel-based alloy coating deposited by plasma transferred arc (PTA). Harsha et al [1] studied the influence of CrC on the microstructure, microhardness and wear resistance of a nickel-based alloy deposited by flame spraying process. They observed that the wear resistance of the Ni modified coating is increased relatively to the CrC-free Ni-based alloy.…”

“…Improvement of the surface properties by thermal spraying hard and wear resistant materials is a commonly used industrial practice [1][2][3]. The base material provides the overall mechanical strength of the components while coatings provide a way of extending the limits of their use at the upper end of their performance capabilities.…”

Erosion wear behaviour of plasma sprayed NiCrSiB/Al2O3 composite coating

“…Various hard phases used as reinforcing additives are WC, Al 2 O 3 , Cr 3 C 2 , Cr 2 O 3 , TiC, SiC, TiN, CeO 2 , TiO 2 etc. [10][11][12][13][14][15][16][17][18][19][20][21][22][23]. The addition of 35 wt.% of WC on Ni based alloy have the highest microhardness and better wear resistant properties at elevated temperatures as reported by [3,[10][11][12][13][14][15].…”

“…Some of the authors studied the effect of the addition of Cr 3 C 2 -25NiCr and SiC to NiCrBSi alloy for sliding wear applications, which positively influences the coefficient of friction and the wear rate of the coating [17,18]. Harsha et al [19] studied the influence of CrC in flame sprayed NiCrSiB coating. The hardness of the coating increases with the addition of CrC particle and obtained a hardness value of 512 HV 0.1 for the addition of 20 wt.% CrC.…”