Deposition of calcium phosphate coatings using condensed phosphates (P2O74 − and P3O105 −) as phosphate source through induction heating

In present work condensed phosphates (P 2 O 7 4   − and P 3 O 10 5   − ) were used as phosphate source in induction heating to deposit calcium phosphate coatings. The phase, morphology, and composition of different phosphate-related coatings were characterized and compared using XRD, FTIR, and SEM analyses. Results showed that P 2 O 7 4   −   formed calcium pyrophosphate hydrate coatings with interconnected cuboid-like particles. The as-deposited calcium tripolyphosphate hydrate coating with P 3 O 10 5   − was mainly composed of flower-like particles assembled by plate-like crystals. The bioactivity and cytocompatibility of the coatings were also studied. Moreover, the feasibility of using hybrid phosphate sources for preparing and depositing coatings onto magnesium alloy was investigated.