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Mechanism of strength degradation for hot corrosion of alpha-sic
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Jacobson, N. S. Smialek, J. L. |
| Copyright Year | 1984 |
| Description | Sintered alpha SiC was corroded by thin films of Na2SO4 and Na2CO3 molten salts at 1000%. This hot corrosion attack reduced room temperature strengths by as much as 50%. Strength degradation was porportional to the degree and uniformity of corrosion pitting attack as controlled by the chemistry of the molten salt. Extensive fractography identified corrosion pits as the most prevalent source of failure. A fracture mechanics treatment of the strength/pit depth relationship produced an average K sub IC equal to 2.6 MPa sub m 1/2, which is consistent with published values. |
| File Size | 15492861 |
| Page Count | 41 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850021823 |
| Archival Resource Key | ark:/13960/t0cv9bq94 |
| Language | English |
| Publisher Date | 1984-01-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Degradation Corrosion Resistance Pitting Fracture Mechanics Deterioration Molten Salts Surface Properties Silicon Carbides Fracture Strength Hot Corrosion Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
