Journal ArticleDOI
Nanostructured Cu-Bi alloys prepared by co-evaporation in a continuous gas flow
TLDR
In this article, a new preparation process for nanostructured alloys utilizing co-evaporation in a continuous gas flow has been developed, where inert gas is injected into a preparation chamber through a nozzle in order to establish a convectional flow that carries crystallites of one element above an evaporation source of a second element so that the atoms of the second source condense at the crystallite's surfaces in the form of a thin coating.About:
This article is published in Nanostructured Materials.The article was published on 1996-08-01. It has received 71 citations till now. The article focuses on the topics: Grain boundary & Crystallite.read more
Citations
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Journal ArticleDOI
Nanocrystalline materials – Current research and future directions
C. Suryanarayana,Carl C. Koch +1 more
TL;DR: Nanocrystalline materials, with a grain size of typically < 100 nm, are a new class of materials with properties vastly different from and often superior to those of the conventional coarse-grained materials as discussed by the authors.
Journal ArticleDOI
Stabilizing nanocrystalline materials with dopants
TL;DR: In this paper, the authors present atomistic simulations that illuminate the stabilizing effect of interfacially segregated, oversized dopants in face-centered cubic cubic (fcc) copper and determine the critical dopant concentration required to eliminate grain growth in bulk and thin film structures.
Journal ArticleDOI
Design of metal nanoparticle synthesis by vapor flow condensation
TL;DR: In this paper, a systematic engineering study on continuous synthesis of bismuth metal nanoparticles by vapor condensation in tube flows is presented, where simulations of aerosol nucleation, condensation and coagulation are cast in a design diagram format to guide experimental studies on the effect of process parameters on product nanoparticle characteristics.
Journal ArticleDOI
Bulk Nanocrystalline Metals: Review of the Current State of the Art and Future Opportunities for Copper and Copper Alloys
TL;DR: In this paper, the authors discuss the methodology for synthesis and consolidation of bulk nanocrystalline materials using mechanical alloying, the alloy development and synthesis process for stabilizing these materials at elevated temperatures, and the physical and mechanical properties of nanocrystine materials with a focus throughout.
Patent
Three-way catalytic converter using nanoparticles
Xiwang Qi,Maximilian A. Biberger +1 more
TL;DR: In this article, a substrate comprising nanomaterials for three-way catalytic converters for treatment of exhaust gases is described, and the methods of preparation of the nanommaterials and the substrate comprising the materials are discussed.
References
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Journal ArticleDOI
Nanocrystalline materials an approach to a novel solid structure with gas-like disorder?
TL;DR: In this paper, randomly oriented "nanocrystal" with sizes d below 10 nm, were compacted into a nanocrystalline solid, which consists of crystalline domains and a connective matrix without any short or long range order.
Journal ArticleDOI
Alloy effects in nanostructures
TL;DR: In this paper, the grain boundary specific energy is reduced by grain boundary segregation, and a narrowing of the glass-forming region is predicted when the metastable polycrystal can form.
Journal ArticleDOI
Formation of Ultrafine Metal Particles by Gas Evaporation Technique. I. Aluminium in Helium
TL;DR: In this article, the appearance of smoke was studied by a video tape recorder and the particle size varied with the gas pressure, evaporation temperature and position of collecting particles, which can be explained with an empirical rule that particles become larger when the nucleation starts in vapour of higher density.
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The segregation of bismuth to grain boundaries in copper-bismuth alloys
B.D Powell,H. Mykura +1 more
TL;DR: In this article, the results showed that on the surfaces which gave good intercrystalline fracture, the Bi is strongly segregated within 1nm of the boundary and is uniformly spread over each boundary, and the amount of segregation varies from boundary to boundary.