Evaluation of Corrosion Preventive Compounds for Aviation Materials Applications

摘要

Corrosion preventive compounds (CPCs) were evaluated using substrates comprised of five commonly used rotary wing aviation materials. The materials used were magnesium alloy AZ31B-H24 aluminum alloy 2024-T3, 4130 low alloy steel. 4340 high strength steel, and AM-355 stainless steel. The relative performance of each CPC was assessed in combination with the materials under several different tests. These tests consisted of general corrosion resistance. resistance to crevice corrosion attack. stress corrosion cracking (4340 only). and surface wetting characteristics. The commercially available CPCs examined were Carwell AR500 CorrosionX Aviation, and CorrosionX general purpose formula. Additionally. Mercon Dexron III automatic transmission fluid was tested for comparison. Baseline data for the test materials with no CPC applied was also collected. Product physical characteristics and properties with respect to application and removal, as well as Materials Safety Data Sheet information, are also included and discussed.