Dikova Tsanka, Hashim Daniel P, Mintcheva Neli
Faculty of Dental Medicine, Medical University of Varna, 55 M. Drinov Str., 9000 Varna, Bulgaria.
CSS Nanotech Inc., Unit 427, 2368A Rice Blvd., Houston, TX 77005-2652, USA.
Materials (Basel). 2024 Mar 11;17(6):1290. doi: 10.3390/ma17061290.
Titanium is the most used material for implant production. To increase its biocompatibility, continuous research on new coatings has been performed by the scientific community. The aim of the present paper is to prepare new coatings on the surfaces of the pure Ti Grade 2 and the Ti6Al4V alloy. Three types of coatings were achieved by applying anodization and chemical vapor deposition (CVD) methods: TiO nanotubes (TNTs) were formed by anodization, carbon nanotubes (CNTs) were obtained through a metal-catalyst-free CVD process, and a bilayer coating (TiO nanotubes/carbon nanostructures) was prepared via successive anodization and CVD processes. The morphology and structure of the newly developed coatings were characterized using SEM, EDX, AFM, XRD, and Raman spectroscopy. It was found that after anodization, the morphology of the TiO layer on pure Ti consisted of a "sponge-like" structure, nanotubes, and nano-rods, while the TNTs layer on the Ti alloy comprised mainly nanotubes. The bilayer coatings on both materials demonstrated different morphologies: the pure Ti metal was covered by a layer of nanotubular and nano-rod TiO structures, followed by a dense carbon layer decorated with carbon nanoflakes, and on the Ti alloy, first, a TNTs layer was formed, and then carbon nano-rods were deposited using the CVD method.
钛是植入物生产中使用最多的材料。为提高其生物相容性,科学界一直在对新型涂层进行持续研究。本文的目的是在纯2级钛和Ti6Al4V合金表面制备新型涂层。通过阳极氧化和化学气相沉积(CVD)方法获得了三种类型的涂层:通过阳极氧化形成TiO纳米管(TNTs),通过无金属催化剂的CVD工艺获得碳纳米管(CNTs),并通过连续的阳极氧化和CVD工艺制备双层涂层(TiO纳米管/碳纳米结构)。使用扫描电子显微镜(SEM)、能谱仪(EDX)、原子力显微镜(AFM)、X射线衍射仪(XRD)和拉曼光谱对新开发涂层的形貌和结构进行了表征。结果发现,阳极氧化后,纯钛表面TiO层的形貌由“海绵状”结构、纳米管和纳米棒组成,而钛合金上的TNTs层主要由纳米管组成。两种材料上的双层涂层表现出不同的形貌:纯钛金属被一层纳米管状和纳米棒状的TiO结构覆盖,随后是一层装饰有碳纳米片的致密碳层,而在钛合金上,首先形成TNTs层,然后使用CVD方法沉积碳纳米棒。