Wear and Corrosion Resistance of Tialsi-Ni Composite Coating Prepared by ∞ Oscillating Laser Cladding

To improve the wear and corrosion resistance of key components and ensure the safe operation of offshore equipment, we applied an ∞ oscillating laser to prepare a TiAlSi-Ni composite coating. The effects of Ni addition on the composition, microstructure, corrosion resistance and mechanical properties of the coating were experimentally investigated. The results showed that the coating mainly presented an interdendritic - dendritic structure,in which the Ti3Al/TiNi semi-coherent interface and lattice distortion gave the Ti3Al-Ti2Ni and TiAl-TiNi eutectic interfaces a high bonding strength. Moreover, the “labyrinth effect” produced by the lamellar eutectic structure further improved the corrosion resistance. This work provides a new method for obtaining coatings with high adhesion and wear and corrosion resistance for offshore platforms.

Keywords: Passivation film, Coherent interface, Wear mechanism, Oscillating laser cladding, Coating.

Suggested Citation: Suggested Citation

Liu, Minglei and Song, Xiaojie and Jiang, Di and Zhang, Guosong and Zhu, Yuming and Cui, Hongzhi, Wear and Corrosion Resistance of Tialsi-Ni Composite Coating Prepared by ∞ Oscillating Laser Cladding. Available at SSRN: https://ssrn.com/abstract=4665662 or http://dx.doi.org/10.2139/ssrn.4665662