The cu-mn (copper-manganese) system

Gokcen, N. A.

doi:10.1007/bf02652163

Cited by 35 publications

(17 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In summary, we have systematically investigated the formation of NPC by selective corrosion of the single-phase Cu 30 Mn 70 alloy in HCl aqueous solutions. By optimizing electrolyte concentration and by controlling dealloying time, NPC with nanopore sizes ranging from $15 to $200 nm are fabricated.…”

Section: Discussionmentioning

confidence: 99%

“…[29] In this study, we chose a Cu 30 Mn 70 alloy as the precursor material. The standard reversible potential of Mn is À1.135 V (vs. standard hydrogen electrode (SHE)), whereas Cu is 0.342 V (vs. SHE).…”

Section: Preparation Of Copper Alloy Precursor For Dealloyingmentioning

confidence: 99%

“…The 1.477 V difference between Mn and Cu provides a wide space for manipulating the dealloying process by changing electrochemical parameters. The binary Cu-Mn phase diagram [30] indicates that a single-phase Cu-Mn alloy can be formed if the alloy is rapidly cooled into a single phase region from high temperatures to avoid phase separation. A melt spinning technique was utilized in this study to quickly quench the Cu 30 Mn 70 alloy from a liquid state to room temperature.…”

Section: Preparation Of Copper Alloy Precursor For Dealloyingmentioning

confidence: 99%

“…A melt spinning technique was utilized in this study to quickly quench the Cu 30 Mn 70 alloy from a liquid state to room temperature. The X-ray diffraction (XRD) pattern shown in Figure 1 (line (a)) demonstrates that the as-quenched Cu 30 Mn 70 ribbons with a thickness of $20 mm and a width of $1 mm are a single-phase alloy. All the diffraction peaks can be indexed as an fcc phase with main diffraction peaks of (111), (200), and (220).…”

Section: Preparation Of Copper Alloy Precursor For Dealloyingmentioning

confidence: 99%

“…3c and d) but uniform nanoporosity is not produced, indicating that there is a critical concentration of HCl electrolytes required for the formation of nanoporosity. The formation of nanostructured Cu 2 O in dilute acid solutions on the coppermanganese sacrificial electrode is probably through the following reactions: [31] Cu 30 …”

Section: Optimizing Dealloying Conditions For Uniform Nanoporositymentioning

confidence: 99%

See 4 more Smart Citations

Nanoporous Copper with Tunable Nanoporosity for SERS Applications

Chen

Fujita

et al. 2009

Adv Funct Materials

354

271

View full text Add to dashboard Cite

Nanostructured materials with designable microstructure and controllable physical and chemical properties are highly desired for practical applications in nanotechnology. In this article, it is reported that nanoporous copper with a tunable nanopore size can be fabricated by controlling the dealloying process. The influence of acid concentration and etching potential on the formation of nanoprosity is systematically investigated. With optimal etching conditions, the nanopore sizes can be tailored from ∼15 to ∼120 nm by controlling the dealloying time. It is found that the tunable nanoporosity leads to significant improvements in surface‐enhanced Raman scattering (SERS) of nanoporous copper and peak values of SERS enhancements for both rhodamine 6G and crystal violet 10B molecules are observed at a pore size of ∼30–50 nm. This study underscores the effect of complex three‐dimensional nanostructures on physical and chemical properties and is helpful in developing inexpensive SERS substrates for sensitive instrumentations in molecular diagnostics.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Preparation Of Copper Alloy Precursor For Dealloyingmentioning

confidence: 99%

Section: Preparation Of Copper Alloy Precursor For Dealloyingmentioning

confidence: 99%

Section: Preparation Of Copper Alloy Precursor For Dealloyingmentioning

confidence: 99%

Section: Optimizing Dealloying Conditions For Uniform Nanoporositymentioning

confidence: 99%

See 3 more Smart Citations

Nanoporous Copper with Tunable Nanoporosity for SERS Applications

Chen

Fujita

et al. 2009

Adv Funct Materials

354

271

View full text Add to dashboard Cite

show abstract

Cu-Mn (Copper-Manganese)

Predel¹

Cr-Cs – Cu-Zr

View full text Add to dashboard Cite

Fabrication and characterization of nanoporous copper through chemical dealloying of cold-rolled and annealed Mn–Cu alloy

et al. 2021

View full text Add to dashboard Cite

This study investigated the effects of the manufacturing process on the microstructure of nanoporous copper (NPC) produced using cold-rolled Mn-30 at.% Cu and Mn-40 at.% Cu precursor sheets. NPC was prepared by chemically dealloying these precursor sheets in a 4% HCl aqueous solution. The initial Mn-Cu alloys were homogenous solid solutions with good cold-rolling workability. After dealloying, Mn-30 at.% Cu and Mn-40 at.% Cu precursors formed nanoporous structures with ligament size of 122 ± 5 nm and 97 ± 4 nm, respectively. In addition, the annealing conditions of the precursors were strongly related to the formation of a bi-continuous nanoporous structure. This was attributed to the lower diffusivity of Mn atoms at 550 ℃ than that at 750 ℃, which resulted in the slower rearrangement of Cu atoms during the dealloying process. Additionally, NPC sheets derived from annealed Mn-30 at.% Cu precursors at different annealing temperatures under the same dealloying condition exhibited ligament sizes of 223 ± 9 nm and 149 ± 4 nm. These results indicate that the change in the annealing temperature of the precursor significantly refined the nanoporous structure.

show abstract

The cu-mn (copper-manganese) system

Cited by 35 publications

References 24 publications

Nanoporous Copper with Tunable Nanoporosity for SERS Applications

Nanoporous Copper with Tunable Nanoporosity for SERS Applications

Cu-Mn (Copper-Manganese)

Fabrication and characterization of nanoporous copper through chemical dealloying of cold-rolled and annealed Mn–Cu alloy

Contact Info

Product

Resources

About