BORŮVKA, Tomáš, Vít VYKOUKAL, František ZELENKA and Jiří PINKAS. Nanoparticle synthesis of Bi, Ni, Sn and their alloys potentially applicable as lead-free nanosolders. In INASCON 2018, Trondheim, Norway. 2018.
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Basic information
Original name Nanoparticle synthesis of Bi, Ni, Sn and their alloys potentially applicable as lead-free nanosolders.
Authors BORŮVKA, Tomáš, Vít VYKOUKAL, František ZELENKA and Jiří PINKAS.
Edition INASCON 2018, Trondheim, Norway, 2018.
Other information
Original language English
Type of outcome Presentations at conferences
Field of Study 10402 Inorganic and nuclear chemistry
Country of publisher Norway
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Science
Keywords in English Nanoparticles; Tin; Melting point depression; reduction synthesis; DSC; TEM; SEM; PXRD
Tags International impact
Changed by Changed by: prof. RNDr. Jiří Pinkas, Ph.D., učo 627. Changed: 8/10/2018 15:52.
Abstract
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.
Links
GA17-15405S, research and development projectName: Pokročilé experimentální a teoretické přístupy k fázovým diagramům nanoslitin se zahrnutím vlivu velikosti částic
Investor: Czech Science Foundation
LM2015043, research and development projectName: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)
Investor: Ministry of Education, Youth and Sports of the CR
LQ1601, research and development projectName: CEITEC 2020 (Acronym: CEITEC2020)
Investor: Ministry of Education, Youth and Sports of the CR
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