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@proceedings{1440816,
author = {Borůvka, Tomáš and Vykoukal, Vít and Zelenka, František and Pinkas, Jiří},
booktitle = {INASCON 2018, Trondheim, Norway},
keywords = {Nanoparticles; Tin; Melting point depression; reduction synthesis; DSC; TEM; SEM; PXRD},
language = {eng},
title = {Nanoparticle synthesis of Bi, Ni, Sn and their alloys potentially applicable as lead-free nanosolders.},
year = {2018}
}
TY - CONF
ID - 1440816
AU - Borůvka, Tomáš - Vykoukal, Vít - Zelenka, František - Pinkas, Jiří
PY - 2018
TI - Nanoparticle synthesis of Bi, Ni, Sn and their alloys potentially applicable as lead-free nanosolders.
KW - Nanoparticles
KW - Tin
KW - Melting point depression
KW - reduction synthesis
KW - DSC
KW - TEM
KW - SEM
KW - PXRD
N2 - Metal nanoparticles and their alloys are promising materials which can be possibly applicable as lead-free solders. Some materials are barely applicable due to their high melting points despite their good mechanical properties. Particles with diameters under 100 nm can display a melting point depression which is caused by surface energy contribution as it is explained in the Gibbs-Thomson equation. This phenomenon is possibly a solution for practical use of solders with high melting points in bulk scale.In our research a synthetic process is optimized to be useful for all the above mentioned metals and alloys with satisfactory results to prepare nanoparticles with diameters below 100 nm featuring melting point depression. Obtained nanoparticles and nanoalloys are characterized by an array of techniques with focusing on describing size distribution and phase transformations. Their phase transformations and thermal behavior are compared with theoretical phase diagrams of bulk and nanomaterials. In cases where nanoparticles display large melting point depression, the materials are considered for possible application as solders. In this work we specifically targeted Bi, Ni and Sn nanoparticles and their binary nanoalloys prepared by reduction synthesis at laboratory temperature. The size distribution of studied nanoparticles and nanoalloys depends on used system and influences the value of melting point depressions. However, for all of mentioned systems, nanoparticles with diameters under 50 nm were obtained. Synthesized nanoparticles were characterized by electron microscopy, powder x-ray diffraction and differential scanning calorimetry.
ER -
BORŮVKA, Tomáš, Vít VYKOUKAL, František ZELENKA a Jiří PINKAS. Nanoparticle synthesis of Bi, Ni, Sn and their alloys potentially applicable as lead-free nanosolders. In \textit{INASCON 2018, Trondheim, Norway}. 2018.
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