The influence of primary/tertiary amines in Oil-in-Water emulsions (as Metal Working Fluids (MWFs) towards brass) is evaluated in both pure water and 5% O/W emulsion. Physical properties, wetting, lubricating and corrosion behaviors are finely investigated. Experimental results show that the number of carbon atoms in amines plays a pivotal role in reducing the brass corrosion. Among the adopted amines, the cyclohexyldiethanolamine (CHDEA) seems to be the optimal one in both media: (i) it adsorbs easily onto the brass limiting corrosion and stain; (ii) it leads to stable emulsions; (iii) it does not affect the emulsion lubricant and wetting performances.
Insight into the role of amines in Metal Working Fluids / A. Lotierzo, V. Pifferi, S. Ardizzone, P. Pasqualin, G. Cappelletti. - In: CORROSION SCIENCE. - ISSN 0010-938X. - 110(2016 Sep), pp. 192-199. [10.1016/j.corsci.2016.04.028]
Insight into the role of amines in Metal Working Fluids
V. PifferiSecondo
;S. Ardizzone;G. CappellettiUltimo
2016
Abstract
The influence of primary/tertiary amines in Oil-in-Water emulsions (as Metal Working Fluids (MWFs) towards brass) is evaluated in both pure water and 5% O/W emulsion. Physical properties, wetting, lubricating and corrosion behaviors are finely investigated. Experimental results show that the number of carbon atoms in amines plays a pivotal role in reducing the brass corrosion. Among the adopted amines, the cyclohexyldiethanolamine (CHDEA) seems to be the optimal one in both media: (i) it adsorbs easily onto the brass limiting corrosion and stain; (ii) it leads to stable emulsions; (iii) it does not affect the emulsion lubricant and wetting performances.File | Dimensione | Formato | |
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Corrosion Science 110(2016)192.pdf
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