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Related Experiment Video

Updated: May 19, 2026

An Available Technique for Preparation of New Cast MnCuNiFeZnAl Alloy with Superior Damping Capacity and High Service Temperature
14:51

An Available Technique for Preparation of New Cast MnCuNiFeZnAl Alloy with Superior Damping Capacity and High Service Temperature

Published on: September 23, 2018

Porous Metals Formed by Leaching Mn-Ni Alloys.

Thomas A Manz1, David R Gaskell2, Kevin P Trumble2

  • 1School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States.

ACS Omega
|May 18, 2026
PubMed
Summary

Researchers developed a strong, lightweight nanoporous material from a specific Mn-Ni alloy. This durable material, created by leaching the alloy in acetic acid, shows promise for various applications requiring robust, low-density components.

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Area of Science:

  • Materials Science
  • Metallurgy
  • Nanotechnology

Background:

  • Manganese-nickel (Mn-Ni) alloys are explored for their unique properties.
  • Developing advanced materials with enhanced strength and low density is crucial for technological applications.

Purpose of the Study:

  • To investigate the preparation and characterization of nanoporous materials derived from Mn-Ni alloys.
  • To evaluate the structural integrity and potential applications of these novel materials.

Main Methods:

  • Preparation of Mn-Ni alloys with over 50 at.% Mn.
  • Microstructural analysis using optical microscopy, electron microprobe analysis, and X-ray diffraction.
  • Leaching in concentrated acetic acid and characterization of resulting nanoporous structures via microscopy, elemental analysis, and physisorption.

Main Results:

  • An alloy with ~73 at.% Mn, when leached for up to 7 days, yielded a strong, nonbrittle, brick-like nanoporous microstructure with low density.
  • This material exhibited exceptional durability over 25+ years.
  • Extended leaching (14 days) resulted in a powdery macroporous material due to manganese removal.

Conclusions:

  • A novel, robust, and lightweight nanoporous material can be synthesized from a specific Mn-Ni alloy through controlled leaching.
  • The resulting material's properties make it suitable for applications demanding high strength and low weight.
  • The leaching duration critically influences the final microstructure and material properties.