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Steam corrosion and steam corrosion inhibition in autoclave sterilization of dental and surgical steel materials
Author(s) -
Holmlund Lars G.
Publication year - 1965
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260070127
Subject(s) - cyclohexylamine , corrosion , autoclave , carbon steel , metallurgy , materials science , sterilization (economics) , amine gas treating , chemistry , organic chemistry , economics , monetary economics , foreign exchange market , foreign exchange
Steam corrosion and steam corrosion inhibition of dental and surgical instrument materials during autoclave sterilization have been investigated. The corrosion tests were performed on carbon steel test samples and on round dental burrs. Cyclohexylamine or decylamine were used as corrosion inhibitors, added to the “feed water,” i.e., deionized water, to a concentration of 0.1%. Before the corrosion experiment the surfaces of the test materials were standardized and calibrated by means of ultrasonic treatment. After the experiment the corrosion products were removed from the test samples or burrs using the same ultrasonic cleaning. Deionized water was used as cleaning liquid, and was then analyzed for the amount of Fe dissolved. The amount of corrosion was expressed as μg. Fe/cm. 2 sample surface area or μg. Fe/burr. The results show that considerable corrosion occurs when carbon steels are exposed to steam during autoclaving, but if cyclohexylamine or decylamine is added to the steam under the otherwise unchanged experimental conditions the total corrosion was reduced by 96–99%. No cytotoxic effect on HeLa cells could be detected with surface products possibly containing traces of amine and/or amine salts—nor with corrosion products alone—when these products were removed from the test materials by means of ultrasonic cleaning.