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Title: Methods and preliminary measurement results of liquid Li wettability

A test of lithium wettability was performed in high vacuum (< 3 × 10{sup −4} Pa). High magnification images of Li droplets on stainless steel substrates were produced and processed using the MATLAB{sup ®} 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:
; ; ; ; ;  [1] ; ;  [2]
  1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)
  2. Princeton Plasma Physics Laboratory, MS-27 P.O. Box 451, Princeton, New Jersey 08543 (United States)
Publication Date:
OSTI Identifier:
22253530
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DROPLETS; IMAGES; LITHIUM; POLYNOMIALS; PRESSURE RANGE MICRO PA; STAINLESS STEELS; SUBSTRATES; WETTABILITY