用四引线原位电阻法研究了Pd线(直径25 μm)在300℃左右流动N2气氛中退火时N2在Pd丝中的扩散,扩散过程符合一维无限长圆柱的体扩散模型,结果不同于传统认为的Pd在1400℃以下不吸N2的结论.拉伸实验证明,N2的渗入改善了Pd丝的力学性能.
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