Effect of SiC/nano‐CeO₂ on wear resistance and microstructures of Ti₃Al/γ‐Ni matrix laser‐cladded composite coating on Ti–6Al–4V alloy

Abstract

The Ti-6Al-4V alloy is an important aviation material, but has a poor resistance to slide wear. Laser cladding of the Al 3 Ti + Ni/ Cr/C + TiB 2 /Al 2 O 3 + SiC/nano-CeO 2 preplaced powders on the Ti-6Al-4V alloy can form the Ti 3 Al/g-Ni matrix composite coating, which improves the wear resistance of the substrate. In this study, the Al 3 Ti + Ni/Cr/C + TiB 2 /Al 2 O 3 + SiC/nano-CeO 2 lasercladded coating was researched by means of X-ray diffraction, scanning electron microscopy, and energy dispersive spectrometry. The experimental results indicate that under the action of SiC/nano-CeO 2 , this composite coating exhibited a fine microstructure. Furthermore, the proper content of nano-CeO 2 decreased the crack tendency. The results above indicated that, it is feasible to improve the tribological property of the Al 3 Ti + Ni/Cr/C + TiB 2 /Al 2 O 3 laser-cladded coating by adding of SiC/nano-CeO 2 .

A review on wear failure of hydraulic components: existing problems and possible solutions

“…Li et al [103] demonstrated that adding 1.5 percent n-CeO2 to cobalt-based alloy coatings improved wear resistance. Similarly, Li et al [104] reported that Nano CeO2 approximately doubles wear and tear resistance and avoid the growth of shorter crack formation and grooves when laser cladding of Titanium alloy was subjected to dry sliding wear conditions. Figure 12 represents the relation between microhardness with the percentage of Cerium oxide during the different thermal coating process.…”