Effect of Al2O3 Nanoparticles and Heat Treatment on the Wear Resistance of Electrodeposited Ni-W/Al2O3 Composite Coatings

Abstract

Al 2 O 3 nanoparticles and heat treatment on the wear resistance of Ni-W/Al 2 O 3 coatings. The wear resistance of as-deposited Ni-W/Al 2 O 3 coatings is obviously improved by incorporation of Al 2 O 3 nanoparticles, which can strongly alleviate the serious plowing during the sliding abrasion. By heat treatment at 300 °C, microhardness and wear resistance of Ni-W/Al 2 O 3 are simultaneously improved. For the Ni-W/Al 2 O 3 coatings heat treated at 700 °C, the grain size increases while the microhardness is barely changed in comparison with the as-deposited coatings, and the wear resistance is improved with low Al 2 O 3 content but degraded at high Al 2 O 3 content. The evolution of wear resistance of Ni-W/Al 2 O 3 coatings can be related to microhardness, incorporation of Al 2 O 3 , precipitation strengthening and interphase interfaces.

Electrodeposition of Ni–W/Al2O3 Nano-Composites and the Influence of Al2O3 Incorporation on Mechanical and Corrosion Resistance Behaviours

“…The secondary particle reinforcement in Ni-W alloy matrix will enhance the mechanical and chemical properties. Based on this, some of the earlier studies discussed about Ni-W alloy matrix with different secondary particle reinforcement such as TiN [37][38][39][40], TiO 2 [41], ZrO 2 [42,43], MoS 2 [44], La 2 O 3 [45], CeO 2 [46], CNT [47], diamond [48], SiC [49] and Al 2 O 3 [50][51][52][53].…”

Influence of the current density on the properties of electrodeposited Ni-W- Ti2AlC composite coatings

“…The study found that the hardness of the composite coating can reach a maximum of 9.1 GPa. Shi et al [12] prepared Ni-W-Al 2 O 3 nanocomposite coatings and found that the addition of Al 2 O 3 can effectively mitigate wear during sliding friction processes. Therefore, adding ceramic reinforcing phases such as SiC, ZrO 2 , Al 2 O 3 , WC, and TaC [13] to Ni-W coatings can effectively improve the coating properties.…”