Al原子在非晶合金Fe_(78)Si_9B_(13)中的扩散

DIFFUSIVITY OF AI IN AMORPHOUS ALLOY Fe_(78)Si_9B_(13)

利用二次离子质谱(SIMS)并结合离子剥落研究了Al原子在非晶Fe_(78)Si_9B_(13)合金中的扩散。实验结果表明:在320-380℃温区内,扩散系数D位于2.43×10^(-22)-2.01×10^(-21)m^2s^(-1)之间,且它随温度的变化符合Arrhenius关系,D=D_0 exp(-Q/kT),其中指数前因子D_0=2.02×10^(-12)m^2s^(-1)。扩散激活能Q=1.17eV。

Ion beam Sputtering Profiling in combination with SIMS technique was em- ployed to investigate the Al diffusion in Fe_(78)Si_9B_(13) amorphous alloy. Between 320℃ and 380℃,the diffusion coefficients vary from 2.43×10^(-22) to 2.01×10^(-21) m^2s^(-1), and an Arrhenius rela-tionship was established as: D_o = 2.02×10^(-12) exp (--1.17 / kT)