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Moisture resistance of polished and coated KCl windows
Author(s) -
Nistor L. C.,
Nistor S. V.,
Teodorescu V.,
Voda M. M.
Publication year - 1989
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170241018
Subject(s) - polishing , materials science , moisture , humidity , coating , composite material , atmosphere (unit) , meteorology , physics
Abstract The moisture resistance of ultratransparent KCl grown in a reactive atmosphere was studied on polished KCl samples coated with protective films of BaF 2 . The lifetime was improved about 4 times compared with uncoated samples. A further improvement was obtained by additional chemical polishing before coating. However, in such a case buckling of the film in a pattern of narrow parallel stripes was observed in an intermediate stage of the humidity test.