title: Methods and preliminary measurement results of liquid Li wettability.
abstract: A test of lithium wettability was performed in high vacuum (< 3 × 10(-4) Pa). High magnification images of Li droplets on stainless steel substrates were produced and processed using the MATLAB(®) program to obtain clear image edge points. In contrast to the more standard "θ/2" or polynomial fitting methods, ellipse fitting of the complete Li droplet shape resulted in reliable contact angle measurements over a wide range of contact angles. Using the ellipse fitting method, it was observed that the contact angle of a liquid Li droplet on a stainless steel substrate gradually decreased with increasing substrate temperature. The critical wetting temperature of liquid Li on stainless steel was observed to be about 290 °C.
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: G Z
authors.initials: GZ
authors.lastname: Zuo
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: J S
authors.initials: JS
authors.lastname: Hu
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: J
authors.initials: J
authors.lastname: Ren
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Sun
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: Q X
authors.initials: QX
authors.lastname: Yang
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: J G
authors.initials: JG
authors.lastname: Li
authors.affiliation: Princeton Plasma Physics Laboratory, MS-27 P.O. Box 451, Princeton, New Jersey 08543, USA.
authors.forename: L E
authors.initials: LE
authors.lastname: Zakharov
authors.affiliation: Princeton Plasma Physics Laboratory, MS-27 P.O. Box 451, Princeton, New Jersey 08543, USA.
authors.forename: D K
authors.initials: DK
authors.lastname: Mansfield