Research progress in preparation of hydroxyapatite coatings by electrophoretic deposition

: The composition of hydroxyapatite (HA) is similar to human bone and teeth. After implantation into human body, its hydroxyl (OH) forms chemical bond with bone cells, and has good biological activity and biocompatibility. It is considered to be the best biomedical material for replacing human hard tissue. Electrophoretic deposition (electrophoretic deposition, EPD) is a new kind of coating preparation method, it can solve the traditional biological ceramic coating preparation technology on the various deficiencies, the paper introduced the domestic and foreign studies of hydroxyapatite coating of electrophoretic deposition. In this paper, the process flow of electrophoretic deposition method and the possible failure reasons are summarized, and various influencing factors are discussed in detail, and the corresponding ideas and prospects are put forward.