Corrosion of Glass

Biocorrosion of stainless steel is caused by exopolymer-producing bacteria. It can be shown that Fe is accumulated in the biofilm [2.62]. The effect of bacteria on the corrosion behavior of the Mo metal surface has also been investigated by XPS [2.63]. These last two investigations indicate a new field of research in which XPS can be employed successfully. XPS has also been used to study the corrosion of glasses [2.64], of polymer coatings on steel [2.65], of tooth-filling materials [2.66], and to investigate the role of surface hydroxyls of oxide films on metal [2.67] or other passive films. 

Corrosion of glassed steel in boiling acid/ distilled water systems... 

Table 18.10 Corrosion of glassed steel in alkaline media as a function of temperature...

CORROSION OF GLASS, CERAMICS AND CERAMIC SUPERCONDUCTORS edited by David E. Clark and Bruce K. Zoitos... 

Cox, G.A. and Cooper, G.I. (1995). Stained glass in York in the mid-16th century - analytical evidence for its decay. Glass Technology 36 129-134. Cox, G.A. and Ford, B.A. (1993). The long-term corrosion of glass by ground-water. Journal of Materials Science 28 5637-5647. 

Jeong, S. Y., Morss, L. R. Ebert, W. L. 2002. Corrosion of glass-bonded sodalite and its components as a function of pH and temperature. Materials Research Society Symposium Proceedings, 713, 413-420. 

Adams, P. B. 1992. Predicting corrosion. In Clark, D. E. Zoitos, B. K. (eds) Corrosion of Glass, Ceramics and Ceramic Superconductors Principles, Testing, Characterization and Applications. Noyes, Park Ridge, USA, 29-50. 

Corrosion of glass by water and aqueous solutions is of primary significance. Small amounts of decomposition products which have dissolved may have a harmful effect, even though the appearance and properties of the glass proper have remained unchanged (c.g. container glass for foodstuffs, liquid pharmaceuticals, injection solutions, etc.). 

The above considerations of the chemical durability and corrosion of glass were concerned with current types of silicate and borosilicate glasses. Special types of glass may exhibit quite different behaviour and also require special test methods. 

In the production of 4-fluorophenol from 4-fluoroaniline (ref. 4a - 4g) a major problem arises with corrosion of glass lined vessels by hydrofluoric acid release. The hydrofluoric acid is considered to arise by nucleophilic displacement of the fluoride from the 4-fluorobenzene diazonium hydrogen sulphate (Fig. 5). This is not surprising since the diazonium group is one of the most electron withdrawing group known. 

ANTIMONY FLUORIDE (7783-70-2) Contact with moisture, water, or steam forms hydrogen fluoride. Incompatible with reducing agents, combustible organic and siliceous materials, phosphorus and phosphate materials. Attacks metals in the presence of moisture with formation of hydrogen fluoride and explosive hydrogen gas. Severe corrosion of glass. 

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