Session Details
Session 9: Aerospace/Defense/Military Zinc Nickel Advancements
Abstract Number:
131
This presentation will describe the identification and development of a new class of corrosion inhibitive pigment for use in organic coatings for the protection of zinc nickel plated steel and the results of testing to date. This new primer; which is VOC and REACh compliant, can substitute chromate primers without any compromise on corrosion resistance.
Topics:
Aerospace / Defense / Military
Aerospace materials are undergoing an accelerated evolution to meet new marketplace and regulatory restrictions on hazardous materials, including the elimination of chromates (Cr 6+) from all chemical processes utilized currently in industry. In the area of high strength steel structures, considerable progress has been made in the development and qualification of zinc nickel protective plating to replace cadmium and titanium-cadmium plating systems.
While these new alloy plating technologies fulfill their requirements for protection of the underlying steel, the zinc nickel plating itself requires a compatible organic finish to deliver the full set of requirements for the component.
It is known that most of existing aerospace primers have chromates in their composition. Commercial chromated free primers exist but have a marginal performance when used over high strength steel and Zn-Ni plating. This introduces significant risk of corrosion for the aerospace industry and for on landing gears in particular.
Our work describes the identification and development of a new class of corrosion inhibitive pigment for use in organic coatings for the protection of zinc nickel plated steel, and the results of testing to date. This new primer which is VOC and REACh compliant can substitute chromate primers without any compromise on corrosion resistance.
CHROMATE-FREE PRIMER USING EcoSkyTM PIGMENT FOR ZnNi PLATED HIGH-STRENGTH STEEL
Marilea Manzini, Ph.D.
Fellow in Materials and Process Technology / Mechanical Systems
Collins Aerospace