Fig. 10From: Evaluating the bioactivity of a hydroxyapatite-incorporated polyetheretherketone biocompositeSBF immersion test showing the apatite-formation ability of the PEEK and HA/PEEK composite: a1–a4 SEM images of PEEK, b1–b4 SEM images of HA/PEEK, c1–c3 EDS spectra of the apatite formed on the HA/PEEK surfaces, d concentration of Ca ions in the soaked SBF, and e concentration of P ions in the soaked SBF. The scale bar represents 10 μmBack to article page