Researchers creating a new kind of metallic glass

A class of materials made from complex alloy.

Metallic glasses are a moderately new class of materials produced using complex, multicomponent amalgams. They have the flexible flexibility of plastics, however the qualities of metals. At the point when metallic glasses cool from a fluid to a strong, their particles sink into an irregular course of action and don’t take shape the way conventional metals do.

Now, Yale scientists have discovered a new form of metallic glasses by making metallic-glass rods so small that there is no room for the nuclei. Scientists called this phenomenon as nucleus starvation.

They compressed samples of metallic glass to nanoscale size and found that they can create new materials with potentially new applications.

Study led Judy Cha said, “This gives us a handle to control the number of nuclei we provide in the sample. When it doesn’t have any nuclei — despite the fact that nature tells us that there should be one — it generates this brand new crystalline phase that we’ve never seen before. It’s a way to create a new material out of the old.”

Scientists used the Transmission Electron Microscope to observe the crystallization process in the materials. They then controlled the diameter of the metallic-glass nanorods and thus tuned the number of nuclei present and tailor the crystalline phases.

Cha said, “Metallic glasses are already being used for a number of applications, including phone casings and golf clubs, but there is still much for researchers to learn about these materials.”

“One of the next steps is to learn more about this new crystalline phase, how to better control it, and what kinds of properties can result from it.”

“We don’t really know a lot about these systems, and when we work with them in smaller, nanometer scales, then a new science and a new physics emerge.”

“That’s exciting because it tells us that there are these new playgrounds emerging that we simply haven’t paid much attention to before, and that there is still more to be explored.”

The discovery also opens up new possibilities for different chemical compounds that have already been developed by conventional methods.


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