faiza asked Hannah Noll, ATI

AddedFriday, February 15, 2019 at 1:30 PM

What is nano-metallurgy?

Hi Hannah – What is nano-metallurgy? I've heard a lot about it but i don't understand what is it and can't find information that's easy to understand. Can you explain it please and give some examples?

Related to Engineering Branches, Materials
  • Hannah Noll , ATI
    Answered Friday, March 22, 2019 at 12:00 PM

    Nano-metallurgy is the study of metals on a nano scale! As our electronics are getting smaller (cell phones, medical devices, etc…) a better understanding of the materials that go into them is required. Let’s say you want to make a very small electrical device. We know how electrical current might flow through a copper wire 1mm thick, but how does that current flow differently through a flat copper wire that is one nanometer (0.000000001m) thick? What about one atom thick? How do the electrons flowing through that very thin wire act? What do they interact with? Nanometallurgy of electrical devices is one example. Depending on the powder particle size, nanometallurgy could also be used to study how additive manufacturing with metal powder works. As each of those tiny powder particles are fused to the next one, how does that fusion affect the particles next to them? What about the particles a couple nanometers away? How does the additive process affect local metal properties or overall part properties? An understanding of how metal atoms interact with each other and with other atoms on a nanoscale level is also important to understand complex alloy systems and their properties and can be used to improve processing and quality of more traditional iron-based alloys as well.