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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
The four-lead in-situ resistance method was used to study the diffusion of N2 in Pd wire when the Pd wire (25 μm in diameter) was annealed in a flowing N2 atmosphere at about 300 ℃. The diffusion process was in accordance with the one-dimensional infinitely long cylindrical body diffusion model. Traditionally, Pd did not absorb N2 below 1400 ℃. Tensile tests show that the infiltration of N2 improves the mechanical properties of Pd wire