نتایج جستجو برای: 2 ایمپلانت تیتانیومی ti6al4v
تعداد نتایج: 2526880 فیلتر نتایج به سال:
Ti6Al4V alloys are widely used in chemical plants, automobile, aerospace industries and medical applications (bone, dental) because of its high specific strength. But, it has poor wear resistance. In the present investigation, duplex coatings were employed to enhance the mechanical and tribological properties. WC-Co Ceramic coatings were deposited on Ti6Al4V substrate with different thicknesses...
استخوان و مینای دندان، کامپوزیتهایی متشکل از ذرات معدنی و مواد آلی همچون پروتئینها و آب هستند. استخوان و مینای دندان نانوکامپوزیتهایی طبیعی هستندکه به ترتیب 70-65 و 97-96 درصد وزنی آنها را فاز معدنی تشکیل داده است. در هردونوع بافت مذکور، فاز معدنی عمدتاً شامل بلورهای هیدروکسی آپاتیت به دوصورت استوکیومتری و غیراستوکیومتری میباشد. خاصیت زیست فعال بودن هیدروکسی آپاتیت این توانایی را به آن می...
Fatigue resistance of nanocrystalline commercial pure titanium obtained by hydrostatic extrusion was investigated. Coarse grained titanium and Ti6Al4V alloy were used as the reference materials. The fatigue limit and fatigue life examined at constant stress amplitude, were found to increase significantly compared to those of the coarse-grained counterparts. It is suggested that the observed imp...
Functionalization of colloidal particles based on the use of polyelectrolytes and heterocoagulation was combined with electrophoretic deposition (EPD), with the aim of depositing titania-polystyrene (TiO(2)-PS) composite particles on Ti6Al4V substrates. The composite particles were obtained by heterocoagulation of TiO(2) nanoparticles on the surface of monosized polystyrene beads of 4.6 microm ...
Three diprotic ionic liquids (PILs) containing bis(2-hydroxyethyl) ammonium cations and citrate (DCi), lactate (DL), or salycilate (DSa) hydroxy/carboxylate anions were studied as lubricants for Ti6Al4V–sapphire contact. At room temperature, the neat PILs are non-Newtonian fluids, which show up to a 70% friction coefficient reduction with respect water. New aqueous developed using 1 wt.% additi...
The frequency of surgeries involving the use metal implants in orthopedic medicine to replace degenerative or fractured joints is increasing, and it therefore important optimize lifespan quality these implants. Advances additive manufacturing (AM), 3D printing, are creating new opportunities personalize ways that reduce mechanical stress at joint implant interface improve bone ingrowth stabilit...
The article presents the results of ultrasonic testing Ti6Al4V material produced by conventional method and laser bed fusion method. Modern manufacturing techniques, such as additive manufacturing, allow production parts with complex shapes. It is important to control condition components throughout their lifetime. purpose this was determine basic acoustic properties two different methods—bar d...
The original intent of coating biomedical and surgical devices surface with antibacterial agents is to prevent infections. However, the difference in material properties between materials causes spall from devices. To address situation, current research focused on investigating possibility using laser powder bed fusion process a subset additive manufacturing technology situ alloy 1 at% Cu Ti6Al...
To improve the biocompatibility of implants, surface medication is a common practice. Depending on the surface medication process, the physical and/or chemical properties of the surface are altered, keeping the bulk properties same. The flexibility and wide application potential of laser as a surface modification tool gives it certain advantages over the traditional physical and chemical proces...
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