The effect of substrate thickness on air plasma sprayed hydroxyapatite coatings

This study was conducted by plasma spraying a HAp powder on Ti-6Al-4V substrates of different thicknesses. The effect of coating HAp on substrates with different thicknesses was investigated before and after immersing the sample in simulated bodily fluid.  Immersion in simulated bodily fluid (SBF) was for various periods (7, 28 and 56 days). The structural changes, phase composition and stress before and after immersion were analysed using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS).

本研究通过等离子喷涂技术在Ti-6Al-4V基体不同厚度上施加HAp粉末，对涂层在基体不同厚度上的影响进行了探究。在将样品浸入模拟体液之前和之后，对涂层的结构变化、相组成及应力进行了分析。模拟体液（SBF）的浸泡时间分别为7天、28天和56天。分析手段包括X射线衍射（XRD）、扫描电子显微镜（SEM）以及能量色散X射线光谱（EDS）。