Aerospace series - Passivation of corrosion resisting steels and decontamination of nickel or cobalt base alloys

This technical document establishes specific procedures for treating aerospace-grade stainless steels and nickel or cobalt-based alloys to prevent corrosion and remove contaminants. The guidelines address the critical requirement for surface preparation in aviation components, ensuring longevity and operational safety under demanding environmental conditions. It outlines the necessary chemical and mechanical steps to achieve an optimal passive layer on stainless steel surfaces while providing methods to decontaminate nickel and cobalt alloys effectively. The document covers various surface states and defines the appropriate cleaning agents and processing parameters suitable for industrial application within the aerospace manufacturing sector. By adhering to these established protocols, manufacturers can maintain the structural integrity of components exposed to harsh operational environments. The scope encompasses the preparation, execution, and verification of the treatment processes, ensuring consistency across different production facilities. It serves as a reference for quality assurance protocols and technical compliance in the fabrication of aerospace systems. The content focuses strictly on the technical methodology required for effective passivation and decontamination without extending to general management or broader industry policies.