Hydroxyapatite powder reinforced individually with 10 wt percentage (wt%) of Al₂O₃ and ZrO₂ (HA + 10 wt% Al₂O₃ and HA + 10 wt% ZrO₂) was thermally sprayed onto SS-316L substrate with a bond coat of Zirconia by vacuum plasma spray (VPS) technique. The resulted coatings were heat treated at 700 °C for 1 h to study its effects on microstructural and mechanical properties of the deposited coatings. The characterization of the coatings was carried out using scanning electron microscope, x-ray diffraction, porosity, surface roughness and crystallinity using Rietveld analysis. The results indicated that after post coating heat treatment substantial decrease in porosity was witnessed along with significant improvement in crystallinity. Besides, the hardness across the cross-section of the coatings and bond strength was considerably improved; however the hardness of top coat was reduced owing to the loosening of un-melted and partially melted particles by diffusion process which takes place during heat treatment.

分别用10 wt％（wt％）的Al ₂ O ₃和ZrO ₂（HA + 10 wt％Al ₂ O ₃和HA + 10 wt％ZrO ₂）增强的羟基磷灰石粉末通过真空等离子喷涂（VPS）技术将）氧化锆热喷涂到具有氧化锆粘结层的SS-316L基板上。将所得的涂层在700°C下热处理1 h，以研究其对沉积涂层的微观结构和力学性能的影响。使用扫描电子显微镜，X射线衍射，孔隙率，表面粗糙度和结晶度（通过Rietveld分析）对涂层进行表征。结果表明，在涂覆后热处理后，观察到孔隙率显着降低，同时结晶度显着提高。此外，涂层横截面的硬度和粘结强度得到了显着提高。