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

An, Qi and Luo, Sheng-Nian and Goddard, William A., III and Han, W. Z. and Arman, B. and Johnson, William L. (2012) Synthesis of single-component metallic glasses by thermal spray of nanodroplets on amorphous substrates. Applied Physics Letters, 100 (4). Art. No. 041909. ISSN 0003-6951. https://resolver.caltech.edu/CaltechAUTHORS:20120316-144958510

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Abstract

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).


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.3675909 DOIArticle
http://apl.aip.org/resource/1/applab/v100/i4/p041909_s1PublisherArticle
ORCID:
AuthorORCID
An, Qi0000-0003-4838-6232
Goddard, William A., III0000-0003-0097-5716
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.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE) National Nuclear Security AdministrationDE-FC52-08NA28613
Los Alamos National LaboratoryUNSPECIFIED
Subject Keywords:drops, glass transition, materials preparation, metallic glasses, molecular dynamics method, nanofluidics, spray coating techniques, spray coatings, substrates, wetting
Other Numbering System:
Other Numbering System NameOther Numbering System ID
WAG0970
Issue or Number:4
Classification Code:PACS: 81.05.Kf, 81.15.Rs, 68.55.at, 61.43.Bn, 61.43.Fs, 68.08.Bc
Record Number:CaltechAUTHORS:20120316-144958510
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120316-144958510
Official Citation:Synthesis of single-component metallic glasses by thermal spray of nanodroplets on amorphous substrates Qi An, Sheng-Nian Luo, William A. Goddard, III, W. Z. Han, B. Arman, and William L. Johnson Appl. Phys. Lett. 100, 041909 (2012); http://dx.doi.org/10.1063/1.3675909 (4 pages)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:29754
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:16 Mar 2012 22:23
Last Modified:03 Oct 2019 03:44

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