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用排水集气法分别测量了淬态和退火处理Fe_(39)Ni_(39)Si_8B_(12)Mn_2金属玻璃在室温附近不同温度下的氢的扩散系数,由此计算出扩散激活能。退火处理导致的结构弛豫均使频率因子D_0和激活能变小。测量了样品在弯曲振动模式下共振频率,发现氢可以降低金属玻璃的杨氏模量,且充氢后时效过程中共振频率随时间的变化规律和时效过程中样品含氢量的曲线相似,即由氢降低的杨氏模量和含氢量成正比。
The diffusion coefficient of hydrogen at different temperature near room temperature was measured by the method of water drainage and gas collection. The diffusion activation energy was calculated from the quenched and annealed Fe_ (39) Ni_ (39) Si_8B_ (12) Mn_2 metallic glasses. The structural relaxation caused by the annealing process makes both the frequency factor D 0 and the activation energy smaller. The resonance frequency of the sample under flexural vibration mode was measured. It was found that hydrogen could reduce the Young’s modulus of metallic glass, and the change of resonance frequency with aging time was similar to the curve of hydrogen content of sample during aging The Young’s modulus reduced by hydrogen is directly proportional to the hydrogen content.