Sol-Gel Deposition of Coatings on Aluminum Alloys for Adhesive Bonding
Agency / Branch:
DOD / USAF
The objective of this proposal is to develop surface preparation method for aircraft grade aluminum alloys for adhesive bonding using sol-gel processes. Low temperature phase y-Al2-O3 coatings will be prepared on aluminum alloys by sol-gel processing. The problem of drying and sintering of gels on aluminum alloys will be solved by rapid thermal processing (RTP). RTP involves high temperature (1000-1200 degrees C) exposure for a very short (5-20 sec) period of time, so that the substrate temperature may not exceed the thermal limit of processing aluminum alloys. The Phase I goal is to demonstrate the process feasibility by depositing anhydrous alumina coatings. The coatings will be characterized for chemical composition, morphology, thermodynamic stability, hydrolytic stability and bondability.
Small Business Information at Submission:
Principal Investigator:Dr Rabi S Bhattacharya
4401 Dayton-xenia Road Dayton, OH 45432
Number of Employees: