DESIGN DATA STUDY FOR COATED COLUMBIUM ALLOYS.
Abstract
Design data properties were determined for four protective coating columbium alloy systems involving Pfaudler and TRW oxidation protective coatings on B-66 and D-43 columbium alloys up to 2600 F. Prior to the design data study, preliminary oxidation (low pressure and one atmosphere), bend and tensile tests were conducted on B-66 and D-43 alloys using two different Pfaudler coatings and the TRW Cr-Ti-Si coating. Based on these evaluation tests the Pfaudler single-cycle silicide coating and the TRW coating were selected for the mechanical properties evaluation. The following design properties were determined for the four coating-base metal systems: (a) cyclic oxidation protective life, (b) tensile properties of uncoated sheet in vacuum and coated sheet in air, (c) creep properties of coated sheet in air and (d) coating deformation tolerance. In addition, a limited evaluation of (a) the ballistic impact resistance of the coatings at room temperature and (b) the tensile properties of coated joints was conducted. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 30, 1964
- Accession Number
- AD0600391
Entities
People
- D. B. Warmuth