Abstract
Abstract A simple nonchromate surface treatment that was developed for aluminum alloys (STAB (3)) has been found to provide Ti-6A1-4V, bonded with epoxy adhesives, with good hydrothermal endurance. The simplest form of the treatment is to degrease, dip in caustic soda, hard [i. e., forceful) spray-rinse and dry. Although STAB (3) for aluminum was satisfactory with a room temperature dip in caustic soda, the solution temperature should be greater than 40°C for Ti-6A1-4V. A steel wool scrub prior to the NaOH dip enhances durability. Surface property measurements following the surface treatment indicate that a porous oxide layer is formed on top of a 300A barrier layer. The durability of this treatment is attributed to mechanical interlocking between the adhesive and the porous oxide (hydroxide) and to the chemical stability of the oxide (hydroxide) under hydrothermal stress.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
