@article{article_481658, title={Investigation of Thermal properties, Chemical Analysis and Biocompatibility of High Temperature Oxidized NiTiMn Shape Memory Alloy}, journal={Journal of Physical Chemistry and Functional Materials}, volume={1}, pages={25–35}, year={2018}, author={Kök, Mediha}, keywords={NiTi based alloy,oxidation,phases,thermogravimetric analysis}, abstract={<p> <font color="#000000" face="Times New Roman" size="3"> </font> <font color="#000000" face="Times New Roman" size="3"> <br /> </font> </p> <p style="margin:0cm 0cm 0pt;text-align:justify;line-height:200%;"> <font face="Times New Roman"> <span lang="en-us" style="color:rgb(0,0,0);" xml:lang="en-us"> <font size="3">In recent years, studies have been conducted on the
biocompatibility of NiTi-based shape-memory alloys, which are used in medical
application. In this study, the oxidation process of Ni </font> <sub> <font size="2">48 </font> </sub> <font size="3">Ti </font> <sub> <font size="2">51 </font> </sub> <font size="3">Mn
alloy produced with Arc Melter Method with the Thermogravimetric Analysis
Device (TG/DTA) was performed to improve biocompatibility for three different
oxidation temperatures (600-700-800 </font> <sup> <font size="2">o </font> </sup> <font size="3">C). The oxidation rate of the
alloy that was exposed to isothermal oxidation was calculated. With the
increase in the oxidation temperature, the alloys were oxidized faster. The
change of the oxidation on the Shape-Memory Effect (SME) of the NiTiMn alloy
was determined by Differential Scanning Calorimetry (DSC), and it was observed
that the SME did not disappear. The changes occurring on the surface and on the
crystal structure of the alloy were determined by SEM-EDX and X-ray analyses.
It was determined with chemical analysis (EDX) that a TiO </font> <sub> <font size="2">2 </font> </sub> <font size="3"> layer was
formed on the alloy. The fact that the TiO </font> <sub> <font size="2">2 </font> </sub> <font size="3"> layer increased with the
increase in the oxidation temperature was supported with x-ray measurement
results. In this way, it was concluded that there was a protective oxide layer
on the surface of the alloy. ICP-MS measurements were done to determine
penetration of Ni,Ti and Mn element of oxides alloys in to Ringer solution </font> </span> <span style="color:rgb(0,0,0);"> <font size="3">. </font> </span> </font> </p> <p> <font color="#000000" face="Times New Roman" size="3"> </font> <br /> </p>}, number={2}, publisher={Niyazi BULUT}