3 results listed
The aim of this study is to produce new generation biodegradable iron-based alloys and to investigate their compatibleness for using as transient implantable materials. Produced iron-cobalt alloys were immersed in SBF to simulate the degradation properties in human body. Degradation behavior of the Fe-Co alloys were investigated using both mass loss tests for following the rate of degradation and observed growth of the apatite structure in the simulated body fluid. Also, general characterization methods (XRD, SEM and EDS) were used for investigation of the samples.
International Iron & Steel Symposium
UDCS
Yucel Gencer
Mehmet Tarakci
Yunus Azakli
Sezgin Cengiz
In this study, Fe-Ni binary alloys containing 1, 2 and 4 at. % Ni were prepared under controlled atmosphere conditions and then these alloys along with pure Fe were pack boronized at 1100°C for 3 h. The boronised samples were characterized by SEM, SEM-EDS, XRD and microhardness measurements. The boride layer with saw-tooth morphology on the substrate materials changed to compact morphology and the branchy structure around the boride crystals was formed with the increasing amount of Ni in the substrates. The main boride layer was composed of FeB and Fe2B phases with homogeneously distributed Ni in the main boride layer and accumulation of Ni in the boride layer/substrate was detected for the borided samples. Ni addition was ineffective on microhardness and thickness of boride layer while the thickness decreased with high addition of Ni.
International Iron & Steel Symposium
UDCS
Naim B. Mackan
Yucel Gencer
In this study, the boronizing of Fe-Cr binary alloys (2, 4, 8 at. % Cr) was investigated by pack boronizing treatment at 1100°C for 3 hours. Fe-Cr binary alloys were prepared under controlled atmosphere. The characterization of the borided alloys was carried out XRD, SEM, SEM-EDS and Vickers microhardness measurements. The boride layer on the Fe-Cr alloys was composed of Fe2B phase. The saw tooth morphology changed to a smoother interface layer (coating-substrate), the boride layer thickness decreased while microhardness did not change significantly with chromium content in the Fe-Cr alloys. The Cr-rich precipitates formed in the transition zone and their amount increased with increasing amount of the chromium in the substrates.
International Iron & Steel Symposium
UDCS
Mehmet Tarakci
Yucel Gencer