Accession Number:

ADA409358

Title:

Investigation of Integrated Coating System for Corrosion Protection

Descriptive Note:

Final technical rept. phase 1, 15 Sep 2001-14 Sep 2002

Corporate Author:

SCIPERIO INC STILLWATER OK

Report Date:

2002-10-12

Pagination or Media Count:

41.0

Abstract:

This report details the coating systems developed under STTR contract for topic AFO1-018. Coating systems comprising an inhibitor-doped layer-by-layer LEL assembly basecoat and a dense organically modified silicate Ormosil topcoat were investigated as corrosion-resistant coatings for 2024-T3 aluminum alloy. Neither the LBL nor the Ormosil materials were found to provide adequate corrosion protection for the underlying metal. A combination of the two coating methods was found to produce a synergistic enhancement in corrosion-resistance characteristics. Incorporation of an active corrosion inhibitor into the LEL coating was also found to improve corrosion-resistance properties. Zincate solutions were found to remove LBLOrmosil coatings on demand from the aluminum-alloy substrate. All objectives set forth in the original Phase 1 project have been accomplished successfully, resulting in the development of an environmentally compliant protective coating that incorporates active corrosion inhibitors and that can be removed readily when needed.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE