Scratch, wear and corrosion resistant organic inorganic hybrid materials for metals protection and barrier
作者： M. Barletta , A. Gisario , M. Puopolo , S. Vesco
DOI: 10.1016/J.MATDES.2014.12.048
关键词:
摘要: Abstract Polysiloxanes are widely used as protective barriers to delay erosion/corrosion and increase chemical inertness of metal substrates. In the present work, a high molecular weight methyl phenyl polysiloxane resin was designed manufacture coating for Fe 430 B structural steel. Methyl groups feature very small steric hindrance confer ductility Si–O–Si backbone organic inorganic hybrid resin, thus allowing achievement thickness. Phenyl larger hindrance, but they ensure stability inertness. Visual appearance morphology coatings were studied by field emission scanning electron microscopy contact gauge surface profilometry. Micro-mechanical response analyzed instrumented progressive load scratch, while wear resistance dry sliding linear reciprocating tribological tests. Lastly, corrosion endurance evaluated sweep voltammetry chronoamperometry in aggressive acid environment. The resulting resins yielded materials, which remarkable adhesion substrate, good scratch endurance, laying foundations long lasting against and, more general, chemicals.
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