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Cvd aluminiding process for producing a modified platinum aluminide bond coat for improved high temperature performance
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 2003 |
| Description | A method of depositing by chemical vapor deposition a modified platinum aluminide diffusion coating onto a superalloy substrate comprising the steps of applying a layer of a platinum group metal to the superalloy substrate; passing an externally generated aluminum halide gas through an internal gas generator which is integral with a retort, the internal gas generator generating a modified halide gas; and co-depositing aluminum and modifier onto the superalloy substrate. In one form, the modified halide gas is hafnium chloride and the modifier is hafnium with the modified platinum aluminum bond coat comprising a single phase additive layer of platinum aluminide with at least about 0.5 percent hafnium by weight percent and about 1 to about 15 weight percent of hafnium in the boundary between a diffusion layer and the additive layer. The bond coat produced by this method is also claimed. |
| File Size | 656513 |
| Page Count | 7 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080007057 |
| Archival Resource Key | ark:/13960/t4dn93g03 |
| Language | English |
| Publisher Date | 2003-08-05 |
| Access Restriction | Open |
| Subject Keyword | Metals And Metallic Materials Aluminides Metallizing Patents Vapor Deposition Heat Resistant Alloys 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 |
