Surface degradation of glass measured by nanoindentation

Author: Sawa T.   Tanaka K.  

Publisher: Taylor & Francis Ltd

ISSN: 0141-8610

Source: Philosophical Magazine. A. Physics of Condensed Matter. Defects and Mechanical Properties, Vol.82, Iss.10, 2002-07, pp. : 2187-2190

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

Nanoindentation tests at the maximum loads Pmax = 50 and 10 µN were conducted to examine the surface degradation of two glasses: alkaline-earth aluminosilicate as-fused glass for a liquid-crystal substrate and mechanically polished optical lead F-1 glass. The load P-penetration depth h curve for the substrate glass followed an ideal square power law, while that for the F-1 glass deviated from the square power law at the initial stage up to h = 6.0 nm. X-ray photoelectron spectroscopy revealed that O - H bonds were formed on the surface of the F-1 glass, suggesting the occurrence of degradation, while no O - H peak was detected on the surface of substrate glass.