Characterization of Porous Titanium-Hydroxyapatite Composite Biological Coating on Polyetheretherketone (PEEK) by Vacuum Plasma Spraying

作者：Hu, Fengfan; Fan, Xiujuan^*; Peng, Feng; Yan, Xingchen; Song, Jinbing; Deng, Chunming; Liu, Min; Zeng, Dechang; Ning, Chengyun

来源：Coatings, 2022, 12(4): 433.

DOI：10.3390/coatings12040433

• PEEK
• vacuum plasma spraying
• composite coating
• microstructure
• bond strength

Titanium powders and hydroxyapatite powders were used to fabricate the titanium and hydroxyapatite composite coating (Ti/Ti/HA) on the Polyetheretherketone (PEEK) by vacuum plasma spraying (VPS). The phase composition and morphology of the Ti/Ti/HA coating were analyzed by XRD, SEM, industrial CT, and three-dimensional contour profiler (DEKTAK XT). The results showed that the phase composition of the Ti/Ti/HA coating was dominated by the HA phase and a small amount of the Ti phase. The Ti/Ti/HA composite coating presented an obvious three-layer structure with different roughness and porosity. The bottom was Ti coating with a porosity less than 10%; the middle was porous Ti coating with a porosity of 35% +/- 10%; the surface coating was HA coating with the crystallinity near 95%, a porosity of 32% +/- 10%, a roughness Ra = 30 +/- 10 mu m. Moreover, the TG-DSC and ATR-FTIR results showed that VPS coating has no effect on thermochemical properties of PEEK material. The average bond strength of the composite coating was achieved 32 MPa.

• 单位
  广东省人民医院