A hydroxyapatite (HAp) coating on 2304 duplex stainless steel (DSS) through an electrophoretic deposition process has been investigated in this work. The deposition voltage was 30 V with a time of 2 min. Field emission scanning electron microscopy and energy dispersive X-ray spectroscopy analyses were used for the microstructural and chemical examination of coatings, respectively. The Ca to P ratio for the nano HAp coating on 2304 DSS has been determined as equal to 1.642. It was observed from X-ray diffraction patterns that HAp nanoparticles were successfully combined into the substrate. The corrosion behavior of all samples was tested in simulated body fluid using a potentiodynamic polarization study. A homogeneous structure with a thin crack-free layer was obtained. Moreover, the porosity of this coating was very low leading to a high corrosion resistance, thus promoting good biocompatibility.

中文翻译：

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电泳沉积表面改性2304双相不锈钢的生物矿化

在这项工作中已经研究了通过电泳沉积工艺在 2304 双相不锈钢 (DSS) 上的羟基磷灰石 (HAp) 涂层。沉积电压为 30 V，时间为 2 分钟。场发射扫描电子显微镜和能量色散 X 射线光谱分析分别用于涂层的微观结构和化学检查。已确定 2304 DSS 上纳米 HAp 涂层的钙磷比等于 1.642。从 X 射线衍射图观察到 HAp 纳米粒子成功地结合到基材中。使用动电位极化研究在模拟体液中测试了所有样品的腐蚀行为。获得具有薄无裂纹层的均匀结构。而且，