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Silicon-slurry/aluminide coating. [protecting gas turbine engine vanes and blades]
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Deadmore, D. L. |
| Copyright Year | 1983 |
| Description | A low cost coating protects metallic base system substrates from high temperatures, high gas velocity ovidation, thermal fatigue and hot corrosion and is particularly useful fo protecting vanes and blades in aircraft and land based gas turbine engines. A lacquer slurry comprising cellulose nitrate containing high purity silicon powder is sprayed onto the superalloy substrates. The silicon layer is then aluminized to complete the coating. The Si-Al coating is less costly to produce than advanced aluminides and protects the substrates from oxidation and thermal fatigue for a much longer period of time than the conventional aluminide coatings. While more expensive Pt-Al coatings and physical vapor deposited MCrAlY coatings may last longer or provide equal protection on certain substrates, the Si-Al coating exceeded the performance of both types of coatings on certain superalloys in high gas velocity oxidation and thermal fatigue and increased the resistance of certain superalloys to hot corrosion. |
| File Size | 405037 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19830023524 |
| Archival Resource Key | ark:/13960/t43r5pv2r |
| Language | English |
| Publisher Date | 1983-02-15 |
| Access Restriction | Open |
| Subject Keyword | Metallic Materials Turbine Blades Gas Turbine Engines Hot Corrosion Substrates Silicon Compounds Corrosion Resistance Thermal Protection Heat Resistant Alloys Cellulose Nitrate Vanes Protective Coatings Slurries Aluminum Coatings Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
