TY - JOUR
T1 - Wettability improvement by plasma irradiation and its applications to phase-change phenomena
AU - Takata, Yasuyuki
AU - Hidaka, Sumitomo
AU - Kohno, Masamichi
N1 - Funding Information:
This work was supported partly by the JFE Steel 21st Century Foundation and the Grant-in-Aids for Scientific Research (B) 14350109 and on Priority Area 417 “Photo-Functional Interface” 14050072 from the Ministry of Science, Sports, Culture and Technology (MEXT).
PY - 2009/6
Y1 - 2009/6
N2 - Plasma irradiation is one of the techniques to improve surface wettability. This technique can be used to enhance heat transfer of liquid-vapor phase change. For instance, evaporation of a water droplet can be enhanced by plasma irradiation. The relation between plasma irradiation time and contact angle was examined first for three metals and then the lifetime of a water drop on a hot surface was measured changing the surface wettability by plasma irradiation. The lifetime of the water drop decreased and the wetting limit temperature increased with the increasing irradiation time of plasma. Hydrophilicity by plasma irradiation is not a permanent effect but it will be useful for enhancement of cooling of hot metal.
AB - Plasma irradiation is one of the techniques to improve surface wettability. This technique can be used to enhance heat transfer of liquid-vapor phase change. For instance, evaporation of a water droplet can be enhanced by plasma irradiation. The relation between plasma irradiation time and contact angle was examined first for three metals and then the lifetime of a water drop on a hot surface was measured changing the surface wettability by plasma irradiation. The lifetime of the water drop decreased and the wetting limit temperature increased with the increasing irradiation time of plasma. Hydrophilicity by plasma irradiation is not a permanent effect but it will be useful for enhancement of cooling of hot metal.
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U2 - 10.1080/01457630802594820
DO - 10.1080/01457630802594820
M3 - Article
AN - SCOPUS:60749112429
SN - 0145-7632
VL - 30
SP - 549
EP - 555
JO - Heat Transfer Engineering
JF - Heat Transfer Engineering
IS - 7
ER -