Abstract
Biocompatibility of Fe〜30at%Pd alloys with shape memory effect was studied by anodic polarlization behavior in 1% NaCl solution and biological reaction of alloy implanted in the leg bone of hen. Natural potential of Fe-Pd in 1% NaCl solution was about -80mV (referred by SCE) and nobler than Ni-Ti with -240mV. However, by the result of anodic polarization, the passive breakdown potential of Fe-Pd was bout 450mV, and considerably lower than Ni-Ti with 1, 200mV. According to the results of animal experiments, 3 months after implantation, paticular swelling of bone by tumor which was observed in the case of Ni implantation was not observed. But at the boundary of bone and alloy, connective tissue was partly formed and significant dissolution of Fe was observed, and another contacting position of bone with alloy, partly dissolution of Fe was also observed.
