Structural and morphological characterization of Ti6Al4V alloy surface functionalization based on Nb2O5 thin film for biomedical applications

2021 ◽  
Vol 557 ◽  
pp. 149739
Author(s):  
Míriam Cristina de Almeida Bino ◽  
Washington Alves Eurídice ◽  
Rogério Valentim Gelamo ◽  
Natália Bueno Leite ◽  
Marcos Vinicius da Silva ◽  
...  
Keyword(s):  
Thin Film ◽  
Surface Functionalization ◽  
Biomedical Applications ◽  
Morphological Characterization ◽  
Ti6al4v Alloy ◽  
Alloy Surface

The Ferroelectric and Electrical Properties of CaBi4Ti4O15 Thin Films Prepared by Sol-Gel Technology

2011 ◽  
Vol 239-242 ◽  
pp. 891-894 ◽  
Author(s):  
Tsung Fu Chien ◽  
Jen Hwan Tsai ◽  
Kai Huang Chen ◽  
Chien Min Cheng ◽  
Chia Lin Wu
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Sol Gel ◽  
Morphological Characterization ◽  
Experimental Result ◽  
X Ray Diffraction ◽  
Solution Deposition ◽  
Capacitance Voltage ◽  
Preferential Crystal Orientation

In this study, thin films of CaBi4Ti4O15with preferential crystal orientation were prepared by the chemical solution deposition (CSD) technique on a SiO2/Si substrate. The films consisted of a crystalline phase of bismuth-layer-structured dielectric. The as-deposited CaBi4Ti4O15thin films were crystallized in a conventional furnace annealing (RTA) under the temperature of 700 to 800°C for 1min. Structural and morphological characterization of the CBT thin films were investigated by X-ray diffraction (XRD) and field-emission scanning electron microscope (FE-SEM). The impedance analyzer HP4294A and HP4156C semiconductor parameters analyzer were used to measurement capacitance voltage (C-V) characteristics and leakage current density of electric field (J-E) characteristics by metal-ferroelectric-insulator- semiconductor (MFIS) structure. By the experimental result the CBT thin film in electrical field 20V, annealing temperature in 750°C the CBT thin film leaks the electric current is 1.88x10-7A/cm2and the memory window is 1.2V. In addition, we found the strongest (119) peak of as-deposited thin films as the annealed temperature of 750°C

scholarly journals Synthesis and characterization of nanostructured ceramics powders for biomedical applications

2007 ◽  
Vol 12 (4) ◽  
pp. 574-582 ◽  
Author(s):  
Nelson Heriberto de Almeida Camargo ◽  
O. J. Bellini ◽  
Enori Gemelli ◽  
M. Tomiyama
Keyword(s):  
Calcium Phosphate ◽  
Nanostructured Materials ◽  
Biomedical Applications ◽  
Calcium Phosphates ◽  
Morphological Characterization ◽  
Synthesis And Characterization ◽  
Powder Synthesis ◽  
Mineralogical Characteristics ◽  
Nanostructured Ceramics

Nanostructured materials have been largely studied in the last few years because they have a great potential to applications in different fields like physics, chemistry, biology, mechanic and medicine. Synthesis and characterization of nanostructured materials is a subject of great interest involving science, market, politicians, government and society. The nanostructured materials are in demand in biomedical area, mainly the bioceramics composed of calcium phosphates (Ca/P), which have an excellent biocompatibility and mineralogical characteristics similar to those of bones. The aim of this work was to optimize the method of powder synthesis of nanostructured calcium phosphate and of nanocomposites composed of calcium phosphate//SiO2n, containing 5, 10 and 15% (in volume) of nanometric silica (SiO2n). The results are expressed according to the method of synthesis, mineralogical and morphological characterization, and thermal behavior for the different compositions of the nanostructured powder synthesized.

Development and characterization of MAO bioactive ceramic coating grown on micro-patterned Ti6Al4V alloy surface

2014 ◽  
Vol 299 ◽  
pp. 58-65 ◽  
Author(s):  
Y.M. Wang ◽  
J.W. Guo ◽  
J.P. Zhuang ◽  
Y.B. Jing ◽  
Z.K. Shao ◽  
...  
Keyword(s):  
Ceramic Coating ◽  
Ti6al4v Alloy ◽  
Alloy Surface ◽  
Bioactive Ceramic

DLC Films Synthesized on the Ti6Al4V Alloy Surface by Plasma Gun at an Atmospheric Pressure

2011 ◽  
Vol 687 ◽  
pp. 739-744 ◽  
Author(s):  
Fei Chen ◽  
Jia Qing Chen ◽  
Hai Zhou ◽  
Cheng Ming Li
Keyword(s):  
Thin Film ◽  
Friction Coefficient ◽  
Photoelectron Spectroscopy ◽  
Atmospheric Pressure ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Ti6al4v Alloy ◽  
Alloy Surface ◽  
Dry Sliding ◽  
Plasma Gun

At atmospheric pressure, Diamond-Like Carbon (DLC) thin films were deposited on the Ti6Al4V alloy surface by a DBD plasma gun at low temperature (<350°C), with CH4 as a precursor and Ar as dilution gas. The structure of the DLC thin film was analyzed by Laser Raman spectroscope and X-ray photoelectron spectroscopy. The surface morphology was observed through scanning electron microscopy. The adhesion between the DLC thin film and the substrate was investigated with the scribe testing. The friction and wear behavior of the DLC thin film under dry sliding against GCr15 steel was evaluated on a ball-on-disc test rig. The results show that it is feasible to prepare a DLC thin film of 1.0μm thickness by plasma gun. The surface roughness Ra is about 13.23nm. The DLC thin film has a good adhesion of critical load 31.0N. It has been found that the DLC thin film has excellent friction and wear-resistant behaviors. The friction coefficient of the Ti6Al4V substrate is about 0.50 under dry sliding against the steel, while the DLC thin film experiences much abated friction coefficient to 0.15 under the same testing condition.

scholarly journals MORPHOLOGICAL AND ELECTRICAL CHARACTERIZATION OF HYBRID THIN-FILM COMPOSED OF TITANIA NANOCRYSTALS, POLY (3-HEXYLTHIOPHENE) AND PIPER BETLE LINN

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
Salmah Mohd Ghazali ◽  
Hasiah Salleh ◽  
Mohd Sabri Mohd Ghazali ◽  
Ahmad Nazri Dagang ◽  
Azmi Zakaria ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Electrochemical Impedance ◽  
Electrical Characterization ◽  
Morphological Characterization ◽  
Piper Betle ◽  
Hybrid Thin Film ◽  
Electrical Conductivities ◽  
Hybrid Thin Films

In this research, the effect of scan numbers of titania nanocrystals (TiO2 NCs) on the morphological and electrical characteristics of hybrid thin-films is investigated. These hybrid thin-films consist of a combination of organic (Piper Betle Linn extraction and Poly (3-hexytlthiophene) (P3HT)) and inorganic TiO2 NCs (anatase structure) materials. These hybrid thin-films are fabricated in bilayer heterojunction of ITO/TiO2 NCs/P3HT/Piper Betle Linn via electrochemistry method using Electrochemical Impedance Spectroscopy (EIS). The scan numbers of TiO2 NCs are varied by 1, 3 and 5 number of scans. The morphological characterization is carried out via Field Emission Scanning Electron Microscopy (FESEM) meanwhile the electrical characteristic of the hybrid thin-film is measured by using four point probes. FESEM image indicates the particle size was found to be around 17-34 nm. The increment of scan number of TiO2 NCs from one to five scan numbers of TiO2 NCs in bilayers thin films showed that the atomic percentage of titanium decrease from 5.23% to 2.20%. This result indicates that as the thickness of thin films increases, the electrons required more energy to excite into conduction band of TiO2. Meanwhile, the electrical conductivities of hybrid solar cell increase from 0.385 Scm-1 to 0.389 Scm-1 as the scan numbers of TiO2 increase from one to three, however the electrical conductivity decrease to 0.346 Scm-1 at five scan numbers. As a conclusion, this study shows that the morphological and electrical properties of hybrid thin-films can be significantly affected by the scan number of TiO2 NCs.

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