有 nano 规模毛孔尺寸的 Nanoporous 铜被 dealloying Mn-Cu 先锋合金用一个免费腐蚀方法综合。结果的 nanoporous 铜的合金阶段,形态学和作文上的 Mn-Cu 先锋的热处理的效果被调查。作文在体积 Mn-Cu 先锋同类地散布,这被揭示,它因而充分导致更多为形成 nanoporous 铜的 dealloying。从到热的 Cu0.33Mn0.67 的 non-thermally 对待的先锋的 Cu0.49Mn0.51 和 Cu0.21Mn0.79 的合金阶段变化对待合金。在 nanoporous 铜的剩余 Mn 内容从 12.97% ~ 2.04% 被减少(臼齿的部分) 没有并且与 95 h 热处理,用先锋做了。dealloying 准备的 nanoporous 铜的典型毛孔形状没有热处理的先锋被划分成二个不同地区:一致双性人连续的结构地区并且模糊或没有毛孔结构地区。Nanoporous 铜具有用对待热的先锋做的一致像海绵的形态学,并且平均系带直径是 40 nm,比那远小从 non-thermally 对待的先锋,平均系带直径在被估计是大约 70 nm。
Nanoporous copper with nano-scale pore size was synthesized by dealloying Mn-Cu precursor alloy using a free corrosion method. The effects of heat treatment of Mn-Cu precursors on alloy phase, morphology and composition of the resultant nanoporous copper were investigated. It is revealed that the compositions distribute homogeneously in the bulk Mn-Cu precursors, which consequently results in a more fully dealloying for forming nanoporous copper. The alloy phase changes from Cuo.a9Mno.51 and Cuo.21Mno.79 of non-thermally treated precursor to Cuo.33Mn0.67 of heat treated alloy. The residual Mn content in nanoporous copper is decreased from 12.97% to 2.04% (molar fraction) made from the precursor without and with 95 h heat treatment. The typical pore shape of nanoporous copper prepared by dealloying the precursor without the heat treatment is divided into two different zones: the uniform bi-continuous structure zone and the blurry or no pore structure zone. Nanoporous copper is of a uniform sponge-like morphology made from the heat-treated precursor, and the average ligament diameter is 40 nm, far smaller than that from the non-thermally treated precursor, in which the average ligament diameter is estimated to be about 70 nm.