Abstract

The implants used as cardio stents, orthopedic and dental implant may be subjected to biological corrosion. Uncoated implants can be corroded in various parts of the body due to acidic erosion and oxidation. This paper presents the findings of a coating technique for the deposition of hydroxyapatite (HAP) coatings on Ti, Ti6Al4V and AISI 316L stainless steel substrates (316L SS). HAP synthesized using the sol–gel technique have been successfully produced. The corrosion behaviors of uncoated and HAP coated substrates were investigated in Ringer’s and 0.9% NaCl solutions. The HAP coatings obtained by the sol gel method are effective in preventing corrosion and increased the polarization resistance values compared to the uncoated samples. Surface structures and chemical composition of the coatings were investigated by scanning electron microscopy (SEM) and energy diffraction X-ray (EDX) methods. SEM images of HAP coated substrates show cauliflower-like structures on the surface. Furthermore, the HAP coatings formed do not completely cover the surface. EDX analysis of HAP coated substrats were determined that there were Ca, O and P as well as oxides on the surface. The obtained HAP powder was characterized by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) methods. In XRD analysis, it was analysed that HAP powder consisted of CaP and HAP structures. In addition, FTIR spectrum was determined that characteristic HAP absorption bands.

中文翻译：

---

用于生物医学应用的HAP涂层：Ti，Ti6Al4V和AISI 316L SS的生物相容性和表面腐蚀防护

摘要

用作心脏支架，骨科和牙科植入物的植入物可能会遭受生物腐蚀。由于酸性腐蚀和氧化作用，未涂覆的植入物可能会腐蚀人体的各个部位。本文介绍了在Ti，Ti6Al4V和AISI 316L不锈钢衬底（316L SS）上沉积羟基磷灰石（HAP）涂层的涂层技术的发现。使用溶胶-凝胶技术合成的HAP已成功生产。在林格氏溶液和0.9％NaCl溶液中研究了未涂层和HAP涂层基材的腐蚀行为。与未涂覆的样品相比，通过溶胶凝胶法获得的HAP涂层可有效防止腐蚀并提高抗极化强度。通过扫描电子显微镜（SEM）和能量衍射X射线（EDX）方法研究了涂层的表面结构和化学成分。HAP涂覆的基材的SEM图像在表面显示出菜花状结构。此外，形成的HAP涂层不能完全覆盖表面。HAP涂层基质的EDX分析确定表面上有Ca，O和P以及氧化物。通过X射线衍射（XRD）和傅里叶变换红外（FTIR）方法对获得的HAP粉末进行表征。在XRD分析中，分析了HAP粉末由CaP和HAP结构组成。此外，FTIR光谱被确定为特征性HAP吸收带。此外，形成的HAP涂层不能完全覆盖表面。HAP涂层基质的EDX分析确定表面上有Ca，O和P以及氧化物。通过X射线衍射（XRD）和傅里叶变换红外（FTIR）方法对获得的HAP粉末进行表征。在XRD分析中，分析了HAP粉末由CaP和HAP结构组成。此外，FTIR光谱被确定为特征性HAP吸收带。此外，形成的HAP涂层不能完全覆盖表面。HAP涂层基质的EDX分析确定表面上有Ca，O和P以及氧化物。通过X射线衍射（XRD）和傅里叶变换红外（FTIR）方法对获得的HAP粉末进行表征。在XRD分析中，分析了HAP粉末由CaP和HAP结构组成。此外，FTIR光谱被确定为特征性HAP吸收带。