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Production of titanium and hydroxyapatite composite biomaterial for use as biomedical implant by mechanical alloying process

Papargyri S. A., Tsipas D., Stergioudis G., Chlopek J.

Inżynieria Biomateriałów

2005

R. 8, nr 46

27--30

Mechanical alloying is a ball milling process where a powder mixture placed in the ball mill is subjected to high energy collision form the balls. As the power particles in the vial are continuously impacted by the balls, cold welding between the particles and fracturing of the particles take place repeatedly during the ball milling process. In this article you will be presented with the case of mechanically alloying a metal such as titanium with hydroxyapatite, a ceramic consisting of calcium, phosphate and hydroxyls. The composite material will be used as a biomaterial used for implants. The starting powders were weighted, mechanically alloyed in an inert atmosphere, pressed and then thermally treated up to 1150 Celsius degrees in a thermal cycle. The samples were then analyzed by TGA-TG, optical microscope, XRD, and SEM. After the thermal treatment, the samples had an outer shell that was composed of hydroxyapatite, and an inner core that consisted of titanium. Mechanical alloying of titanium and hydroxyapatite did not give a uniform distribution of the powders, but titanium particles were covered by hydroxyapatite fragments only on the surface of the specimens.

Charakterystyka pasywowanych powierzchni stopów NiTi wykazujących efekt pamięci kształtu

Morawiec H., Lelątko J., Winiarski A., Stergioudis G., Goryczka T., Pączkowski P.

Inżynieria Biomateriałów

2004

R. 7, nr 37

32-35