Since the early 1960's the spontaneous fracture of tempered glass in high rise buildings has been a continuing problem. The spontaneous fracture is usually caused by nickel sulphide (NiS) stones in the glass. The fracture appears to be initiated by a transformation of the NiS from the high-temperature (alpha-NiS) form to the low-temperature (beta-NiS) form. In this work NiS stones are studied both by optical and electron microscopy.
Origin
University Of Queensland, Brisbane, Australia
Journal Title
Proc J M Cowley Symp. 1993 Scottsdale, Az, Usa. Issn 0304 3991
Sector
Flat glass
Class
F 462