Azem Funda Ak, Birlik Isil, Braic Viorel, Toparli Mustafa, Celik Erdal, Parau Anca, Kiss Adrian, Titorencu Irina, Vladescu Alina
Dokuz Eylul University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, Izmir, Turkey.
National Institute for Optoelectronics, Magurele, Romania.
Proc Inst Mech Eng H. 2015 Apr;229(4):307-18. doi: 10.1177/0954411915578886.
Bioactive coatings are frequently used to improve the osseointegration of the metallic implants used in dentistry or orthopaedics. Among different types of bioactive coatings, hydroxyapatite (Ca10(PO4)6(OH)2) is one of the most extensively used due to its chemical similarities to the components of bones and teeth. In this article, production and characterization of hydroxyapatite films deposited on Ti6Al4V alloy prepared by magnetron sputtering were reported. Besides, SiC was deposited on substrate surface to study the interlayer effect. Obtained coatings were annealed at 600 °C for 30 and 120 min in a mixed atmosphere of N2 + H2O vapours with the heating rate of 12 °C min(-1). The effects of SiC interlayer and heat treatment parameters on the structural, mechanical and corrosion properties were investigated. After heat treatment process, the crystalline hydroxyapatite was obtained. Additionally, cell viability tests were performed. The results show that the presence of the SiC interlayer contributes a decrease in surface roughness and improves the mechanical properties and corrosion performance of the hydroxyapatite coatings. Biological properties were not affected by the presence of the SiC interlayer.
生物活性涂层常用于改善牙科或骨科中使用的金属植入物的骨整合。在不同类型的生物活性涂层中，羟基磷灰石（Ca10(PO4)6(OH)2）因其与骨骼和牙齿成分的化学相似性而成为应用最为广泛的涂层之一。本文报道了通过磁控溅射制备的沉积在Ti6Al4V合金上的羟基磷灰石薄膜的制备与表征。此外，在基底表面沉积SiC以研究中间层效应。将获得的涂层在N2 + H2O蒸汽的混合气氛中于600°C退火30和120分钟，加热速率为12°C min(-1)。研究了SiC中间层和热处理参数对结构、力学和腐蚀性能的影响。热处理后，获得了结晶态的羟基磷灰石。此外，还进行了细胞活力测试。结果表明，SiC中间层的存在有助于降低表面粗糙度，并改善羟基磷灰石涂层的力学性能和耐腐蚀性能。SiC中间层的存在并未影响生物性能。
