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Abstract：
Background Varied surface coatings have been studied time and again in medical sciences. Whether general or dental, studying the performance of coatings aims to assess their potential to improve the durability and longevity of titanium implants, thereby advancing implant technology for enhanced patient outcomes. Various analytical techniques are utilized to assess the performance of the coating, providing insights into its effectiveness in preventing corrosion. The findings of this evaluation will contribute to our understanding of corrosion mitigation strategies for titanium implants and pave the way for the development of more durable implant materials. This article aims to evaluate the corrosion resistance of an innovative metal compound coating applied over titanium implants. Materials and methods In this study, a total of 20 medical-grade, commercially pure titanium screws were collected. The dimensions of the titanium screws were 2mm x 7mm. Around 10 of these commercially pure titanium screw samples were used as the control group. Hafnium nitride (HfN) (0.1 M) was mixed with 100% ethanol and stirred using a glass rod for about 48 hours. Then 10 of the implant screw samples were immersed in the prepared sol and sintered at 400o C for two hours. The HfN-coated samples were then used as the test group. The corrosion resistance of both groups was tested using electrochemical impedance spectroscopy and potentiodynamic polarization studies. The Nyquist, Bode impedance, and Bode phase angle plots were obtained and studied. Results Using the Stern-Geary equation, the corrosion current density was calculated. On analysis, these values indicated that the higher impedance in HfN-coated titanium screws showed higher mean corrosion potential (Ecorr = -0.452 V) and corrosion current density ( icorr = 0.0354 μA/cm2) than the uncoated titanium screws. Conclusion It was concluded that the corrosion properties of HfN-coated titanium screws had higher impedance and consequently the highest corrosion resistance. This thereby provides a promising scope for further research of this novel metal coating for use in the biomedical sectors, specifically for dental implants.
摘要：
背景技术在医学科学中已经对各种表面涂层进行了一次又一次的研究。无论是普通的还是牙科的，研究涂层的性能旨在评估其改善钛植入物耐久性和寿命的潜力，从而推进植入技术，以提高患者的治疗效果。各种分析技术被用来评估涂层的性能，提供其防止腐蚀的有效性的见解。这项评估的结果将有助于我们了解钛植入物的腐蚀缓解策略，并为开发更耐用的植入物材料铺平道路。本文旨在评估应用在钛植入物上的创新金属化合物涂层的耐腐蚀性。材料和方法在这项研究中，总共20个医疗级，收集商业纯钛螺钉。钛螺钉的尺寸为2mmX7mm。这些商业纯钛螺钉样品中的约10个用作对照组。将氮化铪(HfN)(0.1M)与100%乙醇混合并使用玻璃棒搅拌约48小时。然后将10个植入螺钉样品浸入所制备的溶胶中并在400°C下烧结2小时。然后将HfN涂覆的样品用作测试组。使用电化学阻抗谱和动电位极化研究测试了两组的耐腐蚀性。奈奎斯特,波德阻抗,获得并研究了Bode相角图。结果使用Stern-Geary方程，计算了腐蚀电流密度。在分析中，这些值表明，与未涂层的钛螺钉相比，HfN涂层的钛螺钉的较高阻抗显示出更高的平均腐蚀电位（Ecorr=-0.452V）和腐蚀电流密度（Icorr=0.0354μA/cm2）。结论HfN涂层钛螺钉的腐蚀性能具有较高的阻抗，因此耐腐蚀性能最高。因此，这为用于生物医学领域的这种新型金属涂层的进一步研究提供了有希望的范围。专门用于牙科植入物。
