Abstract
Recently, The awareness of global environmental preservation and human health and safety has heightened. There are technical challenges for heat curing painting onto aluminum alloy building materials. For example, applying Cr free type conversion coating or powder paint without organic solvent. Japan Society for Finishings Technology set up the paint environmental preservation study committee to establish proper paint specifications, and continues experimental evaluations for Cr free type conversion coating and powder coating. Based on the detailed analysis of the coating film and the result of neutral salt spray test for that, The authors investigated the application of this conversion coating, mainly Cr free type.
