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本文按金属单位体积电子态密度理论设计了一些 Mn 合金,对其透氢性进行了探索试验。Mn 中加入 Cu 和 Ni,可扩大 Mn 的γ相区,使 Mn 合全能承受塑性加工变形,总加工率可达到80～90%。Mn 合金在热扩散法透氢试验时,发现Mn 合金具有微量透氢性。在100℃以下时,Mn 合金比 Pd 合金透氢量低一个数量级,在320℃以上时,Mn 合金比 Pd 合金低三个数量级。试验证明:金属单位体积电子态密度理论没有指出透氢材料的实质问题。所以 Pd合金的透氢机理还应进一步研究。
In this paper, some Mn alloys were designed according to the volume density of states of the metal units, and their hydrogen permeabilities were explored. Addition of Cu and Ni to Mn expands the γ-phase region of Mn, allowing Mn to be fully capable of withstanding plastic deformation. The total processing rate can reach 80 to 90%. Mn alloy in thermal diffusion hydrogen permeation test found that Mn alloy has a slight hydrogen permeability. Below 100 ℃, the Mn alloy is one order of magnitude lower than the Pd alloy through hydrogen permeation, while the Mn alloy is three orders of magnitude lower than the Pd alloy above 320 ℃. The experiment proves that the theory of volume density of electrons per unit volume does not indicate the substantial problem of hydrogen permeable material. Therefore, Pd hydrogenation mechanism of the alloy should be further studied.