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Long term storage test of titanium material with liquid fluorine propellant
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | English, W. D. Denson, J. R. Roth, J. Toy, A. |
| Copyright Year | 1979 |
| Description | The compatibility of 6AL-4V Ti with propellant grade GF2 and LF2 at 77 K for up to 3 years was investigated. Titanium double coupons, annealed or heat treated, with 16 or 64 RMS finishes, were immersed in F2 in individual Pyrex capsules and stored under LN2 for 29 and 39 months. Pre and post immersion tests were performed on the propellant and coupons. Chemical analysis of the propellant did not reveal any significant changes due to titanium corrosion. Gravimetric, visual, microscopic, and metallurgical examination with pitting analysis did not reveal gross corrosion of the titanium although pitting appears to be greater after 39 months exposure. The increase in pit size and number raises the possibility of unpredictable crack propagation instability. Fracture toughness tests are necessary to define this possibility. |
| File Size | 49534426 |
| Page Count | 278 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19800014023 |
| Archival Resource Key | ark:/13960/t6062c888 |
| Language | English |
| Publisher Date | 1979-12-15 |
| Access Restriction | Open |
| Subject Keyword | Propellants And Fuels Pitting Propellant Storability Propellant Tests Chemical Analysis Microscopy Storage Stability Corrosion Tests Titanium Metallurgy Liquid Fluorine Gravimetry Crack Initiation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
