Effects of high temperature treatment on microstructure and mechanical properties of laser-clad NiCrBSi/WC coatings on titanium alloy substrate

Phase Transformation-Induced Improvement in Hardness and High-Temperature Wear Resistance of Plasma-Sprayed and Remelted NiCrBSi/WC Coatings

“…Meanwhile, the abrasive wear features found on the worn surfaces of all samples, indicating the three-body abrasion process [75]. The plough or scratch found on the worn surfaces illustrate that the wear process is governed by micro-cutting [76]. It is known that the resistance of the coatings to micro-cutting would be enhanced due to the improved hardness of the materials [76].…”

“…The plough or scratch found on the worn surfaces illustrate that the wear process is governed by micro-cutting [76]. It is known that the resistance of the coatings to micro-cutting would be enhanced due to the improved hardness of the materials [76]. Hence, the RE-NW35 sample with higher hardness has a higher ability against the micro-cutting during tribology test.…”

Effects of heat treatment on microstructure and mechanical properties of Ni60/h-BN self-lubricating anti-wear composite coatings on 304 stainless steel by laser cladding

“…It is worth noting that the hardness of the ␥-(Ni, Fe) solid solution of the coating after heat treatment for 1 h is higher than the coating without heat treatment, which is probably caused by grain refining as shown in Fig. 3 and some unknown, nanosized precipitates [19]. Due to the rapid heating and cooling of laser clad characteristics, after heat treatment for 2 h, the lattice distortion, dislocation density and residual stress in the coating were reduced, respectively [11,[29][30][31], the ␥-(Ni, Fe) solid solution matrix has certain soften, so the hardness of the ␥-(Ni, Fe) solid solution of the coating after heat treatment for 2 h is minimum.…”

“…Sun et al [18] studied effects of annealing on laser deposited Co-285 + WC coating and found that residual stress values and microhardness decreased, relative wear resistance of the annealed Co-285 + WC coating was 6.8 times that of the as-deposited coating. Li et al [19] Nevertheless, very few studies had reported the effects of heat treatment on laser clad self-lubricating anti-wear composite coating. Ni-based alloys have high hardness, wear and corrosion resistance and relatively low cost [20,21].…”

Structural and Mechanical Properties of Arc-Sprayed Ni–Cr Coating Post-Treated by Surface Mechanical Attrition Treatment (SMAT)

“…Many studies [22][23][24][25][26][27][28] focused on the effects of heat treatments on the microstructure and mechanical properties evolution of thermally sprayed Ni-based coatings. It was shown that coatings heat-treated at 700 and 900 • C have a dense structure and low porosity.…”