[1] Langdon B. Microstructure decomposition and unique mechanical properties in an ultrafine-grained Al-Zn alloy processed by high-pressure torsion[J]. Kovove Materialy,2015,53(4):251-258. [2] Chouirfa H, Bouloussa H, Migonney V, et al. Review of titanium surface modification techniques and coatings for antibacterial applications [J]. Acta Biomater,2019,83:37-54. [3] Teng Jinwei, Wang Xuejie, Xu Jing, et al. Facile method for covalent-bonding coating of crosslinked silicone layer onto poly(ester-urethane) surface to improve tensile properties and hemocompatibility[J]. Progress in Organic Coatings,2021,152:106111. [4] Alfieri M, Massaro M, D'Ischia M, et al. Site-specific halloysite functionalization by polydopamine: a new synthetic route for potential near infrared-activated delivery system[J]. Journal of Colloid and Interface Science,2022,606(Pt 2):1779-1791. [5] Jing Wensen, Zhang Minghua, Jin Lei, et al. Assessment of osteoinduction using a porous hydroxyapatite coating prepared by micro-arc oxidation on a new titanium alloy[J]. International Journal of Surgery,2015,24(Pt A):51-56. [6] Pacelli S, Rampetsreiter K, Modaresi S, et al. Fabrication of a double-cross-linked interpenetrating polymeric network (IPN) hydrogel surface modified with polydopamine to modulate the osteogenic differentiation of adipose-derived stem cells[J]. ACS Applied Materials & Interfaces,2018,10(30):24955-24962.