Accelerated Corrosion Analysis of Aluminum Armor Alloy 2519 With Nonchromate Conversion Coatings for DOD Applications

摘要

This study examines the effectiveness of six nonchromate conversion coatings on aluminum armor alloy 2519. Evaluation methods included AStM B 117 salt fog, General Motors 954OP cyclic salt spray, wet adhesion, and dry adhesion on painted test panels with initial salt fog screening of unpainted panels. Large differences in behavior were noted between the salt fog data and the cyclic salt spray data obtain on scribed panels. How these data may affect the implementation on nonchromate pretreatments for military vehicles such as Crusader and the (AAAV) considering aluminum 2519 is discussed.