FIELD: methods for protecting against oxidation at high temperature metallic parts having ducts and cavities.
SUBSTANCE: method comprises steps of providing contact at least of gaseous matter containing compounds of aluminum with surfaces of part placed in chamber while using argon or helium as carrier gas. Pressure of carrier gas is selected in such a way that mean length of free travel of its molecules at least by two times exceeds such value for argon molecules at atmospheric pressure. In concrete designs of invention metallic part is made with ducts having at least near outer opening diameter increased in outside direction.
EFFECT: possibility for protecting by aluminizing outer and inner surfaces of metallic parts of turbo-machine, reduced excess thickness of deposited layer in level of openings and(or) cavities.
6 cl, 6 dwg, 1 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PROTECTING METALLIC ARTICLES | 2002 |
|
RU2291913C2 |
| METHOD FOR ALUMINISING FROM VAPOUR PHASE OF HOLLOW METAL PARTS OF GAS-TURBINE ENGINE | 2008 |
|
RU2489513C2 |
| METHOD FOR ALUMINISING FROM VAPOUR PHASE OF METAL PART OF GAS-TURBINE ENGINE, DONOR JACKET AND BLADE OF GAS-TURBINE ENGINE, WHICH CONTAINS SUCH JACKET | 2008 |
|
RU2485206C2 |
| METHOD AND TOOLING FOR DEPOSITION OF METAL COATING FROM VAPOUR PHASE ON PARTS FROM SUPERALLOYS | 2013 |
|
RU2634827C2 |
| METHOD OF LOW-TEMPERATURE ALUMINIZING | 0 |
|
SU840189A1 |
| TURBINE NOZZLE DIAPHRAGM SECTOR, METHOD OF FABRICATING SAID TURBINE NOZZLE DIAPHRAGM SECTOR, AND GAS TURBINE ENGINE | 2008 |
|
RU2476680C2 |
| PROCESS FOR FORMING A PROTECTIVE COATING ON THE SURFACE OF A METAL PART | 2011 |
|
RU2579404C2 |
| METHOD OF DIFFUSION SATURATION OF ITEMS | 2007 |
|
RU2347847C1 |
| METHOD OF DEPOSITION OF PROTECTIVE COATINGS ON DETAILS MADE OUT OF REFRACTORY ALLOYS | 2000 |
|
RU2264480C2 |
| METHOD OF DIFFUSION SATURATION OF PARTS | 2002 |
|
RU2222637C1 |
