Sintering Effect on Mechanical Properties of Composites of Hydroxyapatite Lanthanum Oxide (HA-La2O3)

2006 ◽  
Vol 309-311 ◽  
pp. 101-104 ◽  
Author(s):  
Faik N. Oktar ◽  
L.S. Ozyegin ◽  
Onur Meydanoglu ◽  
H. Aydin ◽  
Simeon Agathopoulos ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compression Strength ◽  
Temperature Increase ◽  
Lanthanum Oxide ◽  
Sintering Temperature ◽  
Experimental Results ◽  
Microstructure Analysis ◽  
Bovine Bone ◽  
Properties Of Composites ◽  
Sintering Effect

Composites of calcinated bovine bone derived hydroxyapatite (HA) with 0.25, 0.5, 1, and 2 wt % La2O3 were prepared by sintering. The experimental results indicated that compression strength and microhardness of HA-La2O3 composites increase when the content of La2O3 and sintering temperature increase. The best mechanical properties were achieved after sintering at 1300°C. The results are in agreement with densification measurements and microstructure analysis.

Sintering Effect on Mechanical Properties of Composites of Bovine Hydroxyapatite (BHA) and Li2O

2006 ◽  
Vol 309-311 ◽  
pp. 49-52 ◽  
Author(s):  
Faik N. Oktar ◽  
M.R. Demirer ◽  
Oguzhan Gunduz ◽  
Yasin Genc ◽  
Simeon Agathopoulos ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Diffraction Analysis ◽  
Compression Strength ◽  
Glassy Phase ◽  
Experimental Results ◽  
Bovine Bone ◽  
X Ray Diffraction ◽  
X Ray ◽  
Bovine Hydroxyapatite ◽  
Properties Of Composites

In this study, hydroxyapatite (HA) material, obtained from calcinated bovine bone (BHA), was mixed with 0.25, 0.50, 1.00, and 2.00 wt% Li2CO3. The pressed pellets were sintered at various sintering temperatures between 900°C and 1300°C. Measurements of compression strength, microhardness, and density, along with SEM observation and X-ray diffraction analysis were performed. The experimental results showed that the samples with 0.25 and 0.50% Li2CO3 reached a maximum of densification and the highest values of compression strength and microhardness were achieved after sintering at 1300°C. The wetting effect of a Li2O-associated glassy phase was observed even from 900°C.

Sintering Effect on Mechanical Properties of Composites of Bovine Derived Hydroxyapatite (BHA) with Titanium

2006 ◽  
Vol 309-311 ◽  
pp. 359-362 ◽  
Author(s):  
L.S. Ozyegin ◽  
Oguzhan Gunduz ◽  
Faik N. Oktar ◽  
B. Oz ◽  
Simeon Agathopoulos ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compression Strength ◽  
High Performance ◽  
X Ray Diffraction ◽  
Metallic Titanium ◽  
Load Bearing ◽  
X Ray ◽  
Properties Of Composites ◽  
Sintering Effect

The aim of this study was to prepare high performance biomaterials suitable for use at load bearing applications with high bioactivity. The hydroxyapatite (HA) was prepared from bovine bones via calcination technique. The bovine derived HA (BHA) was mixed with 5 and 10 wt% metallic titanium (Ti) and the obtained homogenous mixtures were pressed to produce the test samples. The compacts were sintered at temperatures between 1000 and 1300°C. Compression strength, density, and microhardness were measured. SEM and X-ray diffraction studies were also made. The best mechanical properties were obtained between after sintering at 1200-1300°C.

Sintering Effect on Mechanical Properties of Composites of Hydroxyapatite Lanthanum Oxide (HA-La2O3)

2006 ◽  
pp. 101-104 ◽  
Author(s):  
Faik N. Oktar ◽  
L.S. Ozyegin ◽  
Onur Meydanoglu ◽  
H. Aydin ◽  
Simeon Agathopoulos ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Lanthanum Oxide ◽  
Properties Of Composites ◽  
Sintering Effect

Effect of Titanium Carbide Particles on Mechanical Properties of Aluminum Matrix Composites

2017 ◽  
Vol 5 (2) ◽  
pp. 20-30
Author(s):  
Zaman Khalil Ibrahim
Keyword(s):  
Mechanical Properties ◽  
Titanium Carbide ◽  
Compression Strength ◽  
Volume Fraction ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Powder Metallurgy Technique ◽  
Carbide Particles ◽  
Properties Of Composites

In this research aluminum matrix composites (AMCs) was reinforced by titanium carbide (TiC) particles and was produced. Powder metallurgy technique (PM) has been used to fabricate AMCs reinforced with various amounts (0%, 4%, 8%, 12%, 16% and 20% volume fraction) of TiC particles to study the effect of different volume fractions on mechanical properties of the Al-TiC composites. Measurements of compression strength and hardness showed that mechanical properties of composites increased with an increase in volume fraction of TiC Particles. Al-20 % vol. TiC composites exhibited the best properties with hardness value (97HRB) and compression strength value (275Mpa).

Sintering effect on mechanical properties of composites of natural hydroxyapatites and titanium

2009 ◽  
Vol 35 (7) ◽  
pp. 2965-2971 ◽  
Author(s):  
S. Salman ◽  
O. Gunduz ◽  
S. Yilmaz ◽  
M.L. Öveçoğlu ◽  
Robert L. Snyder ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Properties Of Composites ◽  
Sintering Effect

Sintering Effect on Mechanical Properties of Composites of Enamel Derived Hydroxyapatite (EHA) and Titanium

2006 ◽  
pp. 1137-1140 ◽  
Author(s):  
Oguzhan Gunduz ◽  
Faik N. Oktar ◽  
B. Oz ◽  
H. Altundal ◽  
Simeon Agathopoulos ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Properties Of Composites ◽  
Sintering Effect

Sintering Effect on Mechanical Properties of Composites of Bovine Hydroxyapatite (BHA) and Li2O

2006 ◽  
pp. 49-52
Author(s):  
Faik N. Oktar ◽  
M.R. Demirer ◽  
Oguzhan Gunduz ◽  
Yasin Genc ◽  
Simeon Agathopoulos ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bovine Hydroxyapatite ◽  
Properties Of Composites ◽  
Sintering Effect

Bovine Hydroxyapatite (BHA) Boron Oxide Composites

2008 ◽  
Vol 396-398 ◽  
pp. 403-406 ◽  
Author(s):  
Oguzhan Gunduz ◽  
L.S. Ozyegin ◽  
Sergey V. Dorozhkin ◽  
Onur Meydanoglu ◽  
Niyazi Eruslu ◽  
...  
Keyword(s):  
Boric Acid ◽  
Compression Strength ◽  
Boron Oxide ◽  
Pore Formation ◽  
Sintering Temperature ◽  
Bovine Bone ◽  
Time Saving ◽  
Natural Sources ◽  
Bovine Hydroxyapatite ◽  
Oxide Composites

Composites of calcinated bovine bone derived hydroxyapatite (HA) with 5, 7.5 and 10 wt % B2O3 were prepared by sintering. The production of HA from natural sources is preferred due to economical and time saving reasons. In this study scanning electron microscopy (SEM) investigations, microhardness and compression strength measurements were performed on composites. The experimental results indicated that compression strength and microhardness of HA-boron-oxide composites decrease when the content of boric acid and sintering temperature increase. The best mechanical properties achieved for 5 wt % addition of dehydrated boric acid. It was seen that at higher sintering temperatures, the compression strength and the microhardness decrease due to the very intensive pore formation. The results agree fairly well with microstructure analysis.

Bovine Hydroxyapatite (BHA) Strontium Oxide Composites

2008 ◽  
Vol 396-398 ◽  
pp. 407-410 ◽  
Author(s):  
Oguzhan Gunduz ◽  
L.S. Ozyegin ◽  
Sergey V. Dorozhkin ◽  
Onur Meydanoglu ◽  
Niyazi Eruslu ◽  
...  
Keyword(s):  
Compression Strength ◽  
Pore Formation ◽  
Sintering Temperature ◽  
Bovine Bone ◽  
Strontium Oxide ◽  
Time Saving ◽  
Natural Sources ◽  
Bovine Hydroxyapatite ◽  
Oxide Composites ◽  
Scanning Electron

Composites of calcinated bovine bone derived hydroxyapatite (HA) with 5 and 10 wt % SrCO3 were prepared by sintering. The production of HA from natural sources is preferred due to money and time saving reasons. In this study scanning electron microscopy (SEM) investigations and together with measurements of microhardness, density, and compression strength were performed. The experimental results indicated that compression strength and microhardness values of HA-Sr-oxide composites decrease when the content of SrCO3 and sintering temperature increase. The best compression strength values were achieved after sintering at 1000°C. It was seen that at higher temperatures the compression strength and the microhardness values decrease due to the pore formation. The pore formation is very important for scaffold formation for tissue engineering purposes.

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