| 摘要 |
The invention relates to a metallic magnetic material with biocompatible elements (Ti, Ta or Mn), with glassy quasi-amorphous structure and controlled Curie temperature, and the processes for preparing the same. The hereby material has its composition expressed in atomic percent: Fe = 59...67%, Nb = 0.1...1%, B = 20%, biocompatible material (Ti, Ta or Mn) = 12...20%), Curie temperature within the interval 0...70°C, saturation magnetic induction of 0.05...1.1 T and strong magnetic response when introduced in a high frequency magnetic field. The processes used to obtain this material directly under the form of ribbons, glass-coated micro/nanowires or nano/micropowders consist in rapid quenching of the mixtures with previously mentioned compositions under extremely rigorous controlled conditions, in high vacuum of minimum 10-4 mbars or in controlled helium or argon atmosphere in order to avoid oxidation. |
