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Contact angle of E and borosilicate glasses in different atmospheres

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Abstract

The contact angle of E and borosilicate glasses in various atmospheres such as air, steam, glycols, etc, show that the ambient atmosphere significantly affects the wetting behaviour of these glasses with platinum 20% rhodium alloy. The change in the contact angle is attributed to the bond formation between the cations and anions in the substrate, glass and atmosphere. Steam and oxygen which increase the non-bridging oxygens in the glass as well as increase the negativity of the glass surface increase wetting. Glycols and glycerins reduce non-bridging oxygens and increase the surface positivity groups which reduce wetting. As the requirement of oxygen for complete oxidation of atmospheric combustibles increases, the wetting increases and consequently the contact angle decreases.

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Authors and Affiliations

  1. Research and Development, Manville Service Corporation, P.O. Box 5108, 80217, Denver, Colorado, USA

    R. G. Simhan, L. L. Moore & P. R. Van Gunten

Authors
  1. R. G. Simhan
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  2. L. L. Moore
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  3. P. R. Van Gunten
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Simhan, R.G., Moore, L.L. & Van Gunten, P.R. Contact angle of E and borosilicate glasses in different atmospheres. J Mater Sci 20, 1748–1752 (1985). https://doi.org/10.1007/BF00555280

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  • DOI: https://doi.org/10.1007/BF00555280

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