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Cyclic oxidation of cobalt-chromium-aluminum-yttrium and aluminide coatings on in-100 and via alloys in high velocity gases
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Deadmore, D. L. |
| Copyright Year | 1972 |
| Description | Embedded-alumina-particle aluminide (EAPA) coated and CoCrAlY coated IN-100 and NASA-TRW-VIA specimens were cyclically oxidation tested in a high velocity (approximately Mach 1) gas flame at 1093 C (2000 F). The EAPA coatings on both alloys performed very similarly to commercial pack aluminide coatings with respect to weight change and thermal fatigue cracking. The CoCrAlY coating on IN-100 had weight changes similar to commercial pack aluminide coatings but no thermal fatigue cracks appeared at 300 hours. The CoCrAlY coating on VIA performed significantly better than the commercial aluminide coatings, providing oxidation protection (based on weight change) to 450 hours and thermal fatigue crack prevention to at least 600 hours. |
| File Size | 2476499 |
| Page Count | 37 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720020894 |
| Archival Resource Key | ark:/13960/t6h17sd1g |
| Language | English |
| Publisher Date | 1972-07-01 |
| Access Restriction | Open |
| Subject Keyword | Materials, Metallic Oxidation Resistance Nickel Alloys Heat Resistant Alloys Thermal Fatigue Cobalt Compounds Performance Protective Coatings Aluminum Coatings Crack Propagation 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 |
