{"title":"Impact of Hydroxyapatite Powder Particle Size on Mechanical and Electrochemical Properties of Flame-Sprayed Coatings for Titanium Implants","authors":"Trong-Linh Nguyen, Anh-Vu Pham, Van-Thoai Nguyen, Tsung-Chieh Cheng","doi":"10.1007/s11666-024-01831-2","DOIUrl":null,"url":null,"abstract":"<p>Hydroxyapatite (HA) coatings on titanium substrates are widely investigated for biomedical applications due to their biocompatibility and osteoconductivity. This study explores the impact of HA powder particle size on the mechanical and electrochemical properties of flame-sprayed coatings. HA powders were synthesized via a wet chemistry method and characterized using x-ray diffraction, FTIR, and scanning electron microscopy. Flame spraying was employed to deposit HA coatings of varying particle sizes (0-37 µm, 37-63 µm, 63-104 µm, and 104-125 µm) onto titanium substrates. Mechanical properties such as surface roughness, adhesion strength, wear resistance, and Vickers hardness were evaluated, revealing that coatings with smaller particle sizes exhibited smoother surfaces, higher adhesion strengths, superior wear resistance, and greater hardness. Electrochemical properties were assessed through potentiodynamic polarization and electrochemical impedance spectroscopy in simulated body fluid, demonstrating that coatings with finer particle sizes displayed enhanced corrosion resistance compared to those with larger particles. Overall, this study underscores the critical role of HA powder particle size in optimizing the performance of flame-sprayed HA coatings for biomedical applications.</p>","PeriodicalId":679,"journal":{"name":"Journal of Thermal Spray Technology","volume":"19 1","pages":""},"PeriodicalIF":3.2000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Thermal Spray Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s11666-024-01831-2","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}
引用次数: 0
Abstract
Hydroxyapatite (HA) coatings on titanium substrates are widely investigated for biomedical applications due to their biocompatibility and osteoconductivity. This study explores the impact of HA powder particle size on the mechanical and electrochemical properties of flame-sprayed coatings. HA powders were synthesized via a wet chemistry method and characterized using x-ray diffraction, FTIR, and scanning electron microscopy. Flame spraying was employed to deposit HA coatings of varying particle sizes (0-37 µm, 37-63 µm, 63-104 µm, and 104-125 µm) onto titanium substrates. Mechanical properties such as surface roughness, adhesion strength, wear resistance, and Vickers hardness were evaluated, revealing that coatings with smaller particle sizes exhibited smoother surfaces, higher adhesion strengths, superior wear resistance, and greater hardness. Electrochemical properties were assessed through potentiodynamic polarization and electrochemical impedance spectroscopy in simulated body fluid, demonstrating that coatings with finer particle sizes displayed enhanced corrosion resistance compared to those with larger particles. Overall, this study underscores the critical role of HA powder particle size in optimizing the performance of flame-sprayed HA coatings for biomedical applications.
钛基底上的羟基磷灰石(HA)涂层因其生物相容性和骨传导性而被广泛研究用于生物医学应用。本研究探讨了 HA 粉末粒度对火焰喷涂涂层的机械和电化学性能的影响。通过湿化学方法合成了 HA 粉末,并使用 X 射线衍射、傅立叶变换红外光谱和扫描电子显微镜对其进行了表征。采用火焰喷涂法将不同粒径(0-37 微米、37-63 微米、63-104 微米和 104-125 微米)的 HA 涂层沉积到钛基板上。对表面粗糙度、附着强度、耐磨性和维氏硬度等机械性能进行了评估,结果表明,颗粒尺寸较小的涂层表面更光滑、附着强度更高、耐磨性更好、硬度更高。在模拟体液中,通过电位极化和电化学阻抗光谱评估了电化学特性,结果表明,与颗粒较大的涂层相比,颗粒较细的涂层具有更强的耐腐蚀性。总之,这项研究强调了 HA 粉末粒度在优化生物医学应用火焰喷涂 HA 涂层性能方面的关键作用。
期刊介绍:
From the scientific to the practical, stay on top of advances in this fast-growing coating technology with ASM International''s Journal of Thermal Spray Technology. Critically reviewed scientific papers and engineering articles combine the best of new research with the latest applications and problem solving.
A service of the ASM Thermal Spray Society (TSS), the Journal of Thermal Spray Technology covers all fundamental and practical aspects of thermal spray science, including processes, feedstock manufacture, and testing and characterization.
The journal contains worldwide coverage of the latest research, products, equipment and process developments, and includes technical note case studies from real-time applications and in-depth topical reviews.