Název:
Effect of gold coating on emissivity and absorptivity of Ti-6Al-4V alloy
Autoři:
Frolec, Jiří ; Králík, Tomáš ; Musilová, Věra ; Urban, Pavel Typ dokumentu: Příspěvky z konference Konference/Akce: Cryogenics 2017 /14./. IIR International Conference, Dresden (DE), 20170515
Rok:
2017
Jazyk:
eng
Abstrakt: The article provides experimental analysis of total hemispherical emissivity and absorptivity of Ti-6Al-4V alloy before and after deposition of 1-2 .pí.m gold layer. We measured their dependences on the temperature of thermal radiation (varying from 20 K to 320 K) and confronted these results with mechanically polished copper, i.e. with material known for extremely low emissivity and absorptivity. Galvanic deposition of pure gold resulted in significant lowering of original emissivity of Ti-6Al-4V bare surfaces from 15.8 percent to 3.4 percent at 300 K and from 4.1 percent to 1.1 percent at 20 K. Our findings about thermal-radiative properties have practical relevance for an improvement of a low temperature part of an ultra-high vacuum scanning probe microscope\n(UHV-SPM) designed by our group and could also be useful for other applications and low temperature systems.
Klíčová slova:
cryogenics; gold films; heat transfer; thermal radiation Číslo projektu: LO1212 (CEP), TE01020233 (CEP) Poskytovatel projektu: GA MŠk, GA TA ČR Zdrojový dokument: 14th Cryogenics 2017. IIR International Conference. Proceedings, ISBN 978-2-36215-022-7, ISSN 0151-1637
Instituce: Ústav přístrojové techniky AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný v příslušném ústavu Akademie věd ČR. Původní záznam: http://hdl.handle.net/11104/0274395