scholarly journals Surface Characterization, Corrosion Resistance and in Vitro Biocompatibility of a New Ti‐Hf‐Mo‐Sn Alloy

Materials ◽  
2016 ◽  
Vol 9 (10) ◽  
pp. 818 ◽  
Author(s):  
Raluca Ion ◽  
Silviu Drob ◽  
Muhammad Ijaz ◽  
Cora Vasilescu ◽  
Petre Osiceanu ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Surface Characterization ◽  
In Vitro Biocompatibility

Characterization of NiCrMo Dental Restoration Alloy

2021 ◽  
Vol 875 ◽  
pp. 373-378
Author(s):  
Ali Haider ◽  
Omar Farooq Azam ◽  
Muhammad Talha ◽  
Saleem Akhtar
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Dental Materials ◽  
Dental Restoration ◽  
Restorative Material ◽  
Nicr Alloy ◽  
In Vitro Biocompatibility ◽  
Dental Prostheses ◽  
Materials Used

Restorative material is a class of dental materials used for direct filling and fabrication of indirect restoration. NiCr alloy is a restorative material frequently used for dental prostheses due to its properties and economic reasons. In present work beryllium free NiCrMo alloy was developed and studied for dental restoration application. The alloy have unique characteristics of resistance to oxidation and biocompatibility; the requisites for dental prostheses. NiCrMo alloy is found to possess mechanical strength and fabrication properties suitable for dental repairs. In this study the developed alloy was tested for its mechanical properties, biocompatibility and corrosion resistance. An in-vitro biocompatibility study was carried out. No signs of toxicity and no signs of cell growth inhibition, in presence of NiCrMo alloy specimen, were observed. Mechanical properties and corrosion resistance are found in the range that is suitable for dental prostheses and easy fabrication.

In vitro biocompatibility and corrosion resistance of a new implant titanium base alloy

2010 ◽  
Vol 21 (6) ◽  
pp. 1959-1968 ◽  
Author(s):  
E. Vasilescu ◽  
P. Drob ◽  
D. Raducanu ◽  
V. D. Cojocaru ◽  
I. Cinca ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Base Alloy ◽  
In Vitro Biocompatibility

Preparation and Properties of Fluoride-Coated Mg-Zn-Zr Alloy for Biodegradable Intravascular Stents

2011 ◽  
Vol 287-290 ◽  
pp. 1970-1975
Author(s):  
Xin Yu Ye ◽  
Min Fang Chen ◽  
De Bao Liu ◽  
Meng Yang ◽  
Jun Wei
Keyword(s):  
Corrosion Resistance ◽  
Fine Particles ◽  
Corrosion Current ◽  
Cell Number ◽  
Electrochemical Tests ◽  
In Vitro Biocompatibility ◽  
Intravascular Stents ◽  
Surface Morphologies ◽  
Zr Alloy

In order to improve the corrosion resistance, the samples made of Mg-Zn-Zr alloy were immersed in 20% or 40% hydrofluoric acid (HF) aqueous solutions for different intervals to prepare magnesium fluoride (MgF2) coating on the surface. By comparing the surface morphologies, the samples immersed in 20% HF solution for 6 h on which fine particles in nanoscale covered was selected for the further study. Immersion and electrochemical tests showed that the dense MgF2 coating would improve the corrosion resistance of Mg-Zn-Zr alloy. The corrosion current density (icorr) decreased from 2.10 μA·cm-2 to 0.05 μA·cm-2. The influence of HF treatment on the cytocompatibility was evaluated in vitro. There were significant differences in the cell number between the naked and coated samples after culturing for 3 and 5 days (p<0.05). All the results demonstrate that HF treatment is a promising approach to improve the corrosion resistance and in vitro biocompatibility of Mg-Zn-Zr alloy used as intravascular stents.

Surface characterization and in vitro biocompatibility assessment of photosensitive polyimide films

2010 ◽  
Vol 76 (2) ◽  
pp. 505-511 ◽  
Author(s):  
Sami Myllymaa ◽  
Katja Myllymaa ◽  
Hannu Korhonen ◽  
Mikko J. Lammi ◽  
Virpi Tiitu ◽  
...  
Keyword(s):  
Surface Characterization ◽  
Polyimide Films ◽  
In Vitro Biocompatibility

SURFACE CHARACTERIZATION OF ZrO2/Zr COATING ON Ti6Al4V AND IN VITRO EVALUATION OF CORROSION BEHAVIOR AND BIOCOMPATIBILITY

2017 ◽  
Vol 24 (Supp01) ◽  
pp. 1850003
Author(s):  
RUOYUN WANG ◽  
YONGHUA SUN ◽  
XIAOJING HE ◽  
YUEE GAO ◽  
XIAOHONG YAO
Keyword(s):  
Corrosion Resistance ◽  
Magnetron Sputtering ◽  
Surface Characterization ◽  
Hybrid Approach ◽  
Treatment Technique ◽  
Electrochemical Tests ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Micro Arc Oxidation

Biocompatibility is crucial for implants. In recent years, numerous researches were conducted aiming to modify titanium alloys, which are the most extensively used materials in orthopedic fields. The application of zirconia in the biomedical field has recently been explored. In this study, the biological ZrO2 coating was synthesized on titaniumalloy (Ti6Al4V) substrates by a duplex-treatment technique combining magnetron sputtering with micro-arc oxidation (MAO) in order to further improve the corrosion resistance and biocompatibility of Ti6Al4V alloys. The microstructures and phase constituents of the coatings were characterized by scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD), the surface wettability was evaluated by contact angle measurements. The results show that ZrO2 coatings are porous with pore sizes less than 2[Formula: see text][Formula: see text]m and consist predominantly of the tetragonal ZrO2 (t-ZrO[Formula: see text] and cubic ZrO2(c-ZrO[Formula: see text] phase. Electrochemical tests indicate that the corrosion rate of Ti6Al4V substrates is appreciably reduced after surface treatment in the phosphate buffer saline (PBS). In addition, significantly improved cell adhesion and growth were observed from the ZrO2/Zr surface. Therefore, the hybrid approach of magnetron sputtering and MAO provides a surface modification for Ti6Al4V to achieve acceptable corrosion resistance and biocompatibility.

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