Person: OKTAR, FAİK NÜZHET
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
OKTAR
First Name
FAİK NÜZHET
Name
3 results
Search Results
Now showing 1 - 3 of 3
Publication Metadata only Sintering effect on mechanical properties of composites of bovine hydroxyapatite (BHA) and Li2O(Trans Tech Publications Ltd, 2006) OKTAR, FAİK NÜZHET; Oktar F.N., Demirer M.R., Gunduz O., Genc Y., Agathopoulos S., Peker I., Ozyegin L.S., Salman S.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% Li 2CO3. 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.Publication Metadata only Sintering effect on mechanical properties of composites of enamel derived hydroxyapatite (EHA) and titanium(Trans Tech Publications Ltd, 2006-05-15) OKTAR, FAİK NÜZHET; Gunduz O., Oktar F.N., Oz B., Altundal H., Agathopoulos S., Salman S., Ovecoglu L.Hydroxyapatite (HA) is one of the most promising biomaterials, which is on use since decades in biomedicine. Because of the known mechanical weakness of HA in load carrying situations, various dopants, like ceramic oxides and metallic particles, have been used to produce HA-composite materials. In this study, Ti powders were admixed with enamel derived HA at 5 and 10 wt %. After ball milling, the mixtures were uniaxially pressed into pellets of a cylindrical form. The composites were sintered at temperatures between 1000°C and 1300°C. Microhardness, compression strength, and density measurements together with X-ray diffraction analysis and SEM studies were performed. The best mechanical values were obtained for the samples sintered between 1100°C and 1300°C.Publication Metadata only Sintering effect on mechanical properties of composites of bovine derived hydroxyapatite (BHA) with titanium(Trans Tech Publications Ltd, 2006) OKTAR, FAİK NÜZHET; Ozyegin L.S., Gunduz O., Oktar F.N., Oz B., Agathopoulos S., Salman S., Ovecoglu L.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.