接触角测量来表征航空飞机表明镀膜层

2010-08-31 10:30  下载量:86

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Contact angles using water were measured on five coatings used on aircraft. These coatings are very uniform spatially but do exhibit hydration, meaning their contact angle changes as a function of exposure to the vapor of the test fluid (i.e., water). Therefore each contact angle was measured as a function of time, with t = 0 corresponding to the first contact of the water with the dry surface. Two contact angles can be identified: an initial angle and a steady-state angle. These surfaces equilibrated in about 15 seconds, as can be seen from the representative graphs of contact angle versus time presented below.

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