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Epoxy-Zirconate Sol-Gel Studies


EMSL Project ID
3021

Abstract

Epoxy-zirconate sol-gel based surface treatments are being investigated as a potential replacement for the current chromate-based approach for aerospace aluminum alloys. These sol-gel surface treatments are water-based and are designed to provide a functionally gradient coating, which has high barrier properties to limit corrosion. These Ep-Zr coatings are made in the classical sol-gel processes of hydrolysis, condensation, and polymerization. Results (salt spray tests and boiling water test) show that epoxy-zirconate, used in a system with a chromated primer, does provide some level of corrosion protection. Another coating under investigation is the pre-formed, Self-assembled NAno-phase Particle (SNAP) process. In this process, nanoscale (1-2 nm diameter) siloxane particles are formed in a high water content hydrolysis/condensation process and then crosslinked upon application to the substrate. SNAP used alone on alloys provides corrosion protection.

Project Details

Project type
Exploratory Research
Start Date
2002-10-28
End Date
2003-10-22
Status
Closed

Team

Principal Investigator

Michael Donley
Institution
University of Dayton

Related Publications

95Mo NMR Study of Crystallization in Model Nuclear Waste Glasses Scott Kroeker,1 Ian Farnan,2 Sophie Schuller3 and Thierry Advocat4 1Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada 2Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, U.K. 3CEA Valrhô Marcoule, DEN/DTCD/SECM/LDMC, BP 17171, 30207 Bagnols/Céze, France 4CEA Saclay, DEN/DANS/DPC/SECR, 91191 Gif-sur-Yvette, France
Materials Research Society proceedings (accepted)