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Published January 26, 2012 | Published
Journal Article Open

Synthesis of single-component metallic glasses by thermal spray of nanodroplets on amorphous substrates


We show that single component metallic glasses can be synthesized by thermal spray coating of nanodroplets onto an amorphous substrate. We demonstrate this using molecular dynamics simulations of nanodroplets up to 30 nm that the spreading of the nanodroplets during impact on a substrate leads to sufficiently rapid cooling (10^(12)–10^(13) K/s) sustained by the large temperature gradients between the thinned nanodroplets and the bulk substrate. However, even under these conditions, in order to ensure that the glass transition outruns crystal nucleation, it is essential that the substrate be amorphous (eliminating sites for heterogeneous nucleation of crystallization).

Additional Information

© 2012 American Institute of Physics. Received 6 September 2011; accepted 6 December 2011; published online 26 January 2012. This work was supported by the Department of Energy National Nuclear Security Administration PSAAP project at Caltech (DE-FC52-08NA28613) and the ASC/LDRD programs at LANL.

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Published - An2012p17475Appl_Phys_Lett.pdf


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