scholarly journals APATITE FORMATION ON CaO,SiO2-BASED GLASS-CERAMICS IN A SIMULATED BODY FLUID

2006 ◽  
Vol 20 ◽  
pp. 101-110 ◽  
Author(s):  
Masanobu Kamitakahara ◽  
Chikara Ohtsuki
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Glass Ceramics ◽  
Apatite Formation

BIOACTIVITY OF APATITE–WOLLASTONITE GLASS-CERAMICS PRODUCED BY MELTING CASTING

2013 ◽  
Vol 20 (01) ◽  
pp. 1350010 ◽  
Author(s):  
JONGEE PARK ◽  
ABDULLAH OZTURK
Keyword(s):  
Free Surface ◽  
Simulated Body Fluid ◽  
Glass Ceramic ◽  
Body Fluid ◽  
Glass Ceramics ◽  
Casting Process ◽  
Apatite Layer ◽  
Glassy Matrix ◽  
Apatite Formation ◽  
Ceramic Process

Glass-ceramics containing only apatite and wollastonite crystals were produced in the system MgO-CaO-SiO2-P2O5-F by the melt casting process. The bioactivity of the glass-ceramics was determined by immersing the glass-ceramics in a simulated body fluid (SBF) and by assessing the resulting apatite formation on the free surface after various immersion durations. A 12-μm-thick apatite layer formed on the surface of the glass-ceramic containing only apatite crystals after 20 days immersion in SBF. However, the thickness of the apatite layer formed on the surface of the glass-ceramic containing apatite and wollastonite crystals was 1 μm. Results have shown that the bioactivity of glass-ceramic depends strongly on the type of crystal(s) developed during the glass-ceramic process and their proportion in the glassy matrix.

scholarly journals Bonding between Bioactive Glasses, Glass-Ceramics or Ceramics in a Simulated Body Fluid

1987 ◽  
Vol 95 (1104) ◽  
pp. 785-791 ◽  
Author(s):  
Takashi KOKUBO ◽  
Tetsuya HAYASHI ◽  
Sumio SAKKA ◽  
Toshiaki KITSUGI ◽  
Takashi YAMAMURO
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Glass Ceramics ◽  
Bioactive Glasses

The apatite formation ability of CaF 2 doping tricalcium silicates in simulated body fluid

2009 ◽  
Vol 4 (4) ◽  
pp. 045005 ◽  
Author(s):  
Qing Lin ◽  
Yanbao Li ◽  
Xianghui Lan ◽  
Chunhua Lu ◽  
Yixin Chen ◽  
...  
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Apatite Formation

Microstructural analysis and bioactive response of selectively engineered glass-ceramics in simulated body fluid

2020 ◽  
pp. 1-9
Author(s):  
Abhijit Vyas ◽  
Vijay Shankar Kumawat ◽  
Subrata Bandhu Ghosh ◽  
Sanchita Bandyopadhyay-Ghosh
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Microstructural Analysis ◽  
Glass Ceramics

scholarly journals Bioactivity Behavior Evaluation of PCL-Chitosan-Nanobaghdadite Coating on AZ91 Magnesium Alloy in Simulated Body Fluid

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 231
Author(s):  
Farzad Soleymani ◽  
Rahmatollah Emadi ◽  
Sorour Sadeghzade ◽  
Fariborz Tavangarian
Keyword(s):  
Simulated Body Fluid ◽  
Corrosion Rate ◽  
Composite Coating ◽  
Body Fluid ◽  
Composite Coatings ◽  
Phosphate Buffer Solution ◽  
Az91 Alloy ◽  
Apatite Formation ◽  
Az91 Magnesium Alloy ◽  
Sbf Solution

Polymer–ceramic composite coatings on magnesium-based alloys have attracted lots of attention in recent years, to control the speed of degradability and to enhance bioactivity and biocompatibility. In this study, to decrease the corrosion rate in a simulated body fluid (SBF) solution for long periods, to control degradability, and to enhance bioactivity, polycaprolactone–chitosan composite coatings with different percentages of baghdadite (0 wt.%, 3 wt.%, and 5 wt.%) were applied to an anodized AZ91 alloy. According to the results of the immersion test of the composite coating containing 3 wt.% baghdadite in a phosphate buffer solution (PBS), the corrosion rate decreased from 0.45 (for the AZ91 sample) to 0.11 mg/cm2·h after seven days of immersion. To evaluate the apatite formation capability of specimens, samples were immersed in an SBF solution. The results showed that the samples were bioactive as apatite layers formed on the surface of specimens. The composite coating containing 3 wt.% baghdadite showed the highest apatite-formation capability, with a controlled release of ions, and the lowest corrosion rate in the SBF.

Effect of Annealing on Microstructure of Hydroxyapatite Coatings and their Behaviours in Simulated Body Fluid

2014 ◽  
Vol 922 ◽  
pp. 657-662 ◽  
Author(s):  
Sharidah Azuar Abdul Azis ◽  
John Kennedy ◽  
Peng Cao
Keyword(s):  
Heat Treatment ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Ion Beam ◽  
Apatite Formation ◽  
Ion Beam Sputtering ◽  
Different Temperatures ◽  
Higher Temperature ◽  
Xrd Patterns ◽  
Post Deposition

In this study, hydroxyapatite (HA) coatings on Ti6Al4V substrate were deposited using an ion beam sputtering technique. Owing to its medical applications, the crystalline phases present in the HA must be controlled. This study investigated the effect of post-deposition heat treatment at different temperatures and evaluated the microstructure of the HA coatings and their behaviours in simulated body fluid (SBF). The post-deposition treatment of the as-deposited samples was carried out in an air-circulated furnace at a temperature between 3000C and 6000C. The XRD patterns reveal that the minimum temperature to transform the HA coating from amorphous to crystalline phase is 4000C. A higher temperature at 6000C leads to a growth of the crystalline HA phases. Fourier transform infrared spectroscopy (FTIR) measurements show the existence of hydroxyl and PO-bonds in all coatings and the amounts varied with temperature. Atomic Force Microscopy (AFM) study suggests that the nanostructured crystalline HA starts to grow at 4000C and becomes more obvious at a higher temperature of 6000C. The simulated body fluid (SBF) test reveals that better apatite formation with post deposition heat treatment at 6000C would potentially enhance the formation of new bone (osseointegration).

THE MECHANISM OF APATITE FORMATION ON Na2O-SiO2 GLASS IN SIMULATED BODY FLUID

Bioceramics ◽  
1999 ◽  
Author(s):  
H. Takadama ◽  
H.-M. Kim ◽  
F. Miyaji ◽  
T. Kokubo ◽  
T. Nakamura
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Apatite Formation ◽  
Sio2 Glass

Apatite formation on silica gel in simulated body fluid: Its dependence on structures of silica gels prepared in different media

1996 ◽  
Vol 33 (3) ◽  
pp. 145-151 ◽  
Author(s):  
Sung-Baek Cho ◽  
Kazuki Nakanishi ◽  
Tadashi Kokubo ◽  
Naohiro Soga ◽  
Chikara Ohtsuki ◽  
...  
Keyword(s):  
Simulated Body Fluid ◽  
Silica Gel ◽  
Body Fluid ◽  
Silica Gels ◽  
Apatite Formation
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