Variations of interfacial thermal conductance at melting and crystallization of an indium micro-particle in contact with a solid
| Autor: | Alexander A. Minakov, Meguya Ryu, Evgeny Zhuravlev, Christoph Schick, Junko Morikawa |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Additive manufacturing Infrared High-speed thermography Analytical chemistry chemistry.chemical_element 02 engineering and technology Substrate (electronics) 010402 general chemistry 01 natural sciences law.invention Thermal conductivity law lcsh:TA401-492 General Materials Science Crystallization Mechanical Engineering 021001 nanoscience & nanotechnology 0104 chemical sciences Ultrafast nanocalorimetry Metal micro-particle chemistry Mechanics of Materials Interfacial thermal conductance/resistance Thermography Heat transfer Particle lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology Indium |
| Zdroj: | Materials & Design, Vol 201, Iss, Pp 109475-(2021) |
| ISSN: | 0264-1275 |
| DOI: | 10.1016/j.matdes.2021.109475 |
| Popis: | The heat transfer between a micrometer-sized particle, as used in laser-assisted additive manufacturing, and a substrate strongly depends on the variations in interfacial thermal conductance (ITC), among other thermophysical parameters of the sample and substrate. Variations of ITC were measured on a millisecond time scale during fast melting and crystallization of an indium micro-sized sample with a mass of about 1 ng. Fast scanning nanocalorimetry was simultaneously applied with high-speed infrared thermography. The ITC between the sample and the sensor membrane was obtained. Therefore, the evolution of the temperature difference at the sample/membrane interface during fast melting and crystallization of the micro-sized indium droplet was measured. An unusual effect of gradual variation of ITC in the melting experiment was found. The method can be applied for ITC measurements during fast processes with 0.26 ms resolution. The quantification of ITC allows, for example, the optimization of melting during additive manufacturing. |
| Databáze: | OpenAIRE |
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