Vapor phase deposition of silicide refractory coatings
Abstract
Abstract Refractory coatings are formed upon the periphery of objects by passing a vaporous reactant stream in contact with the objects which are tumbled in a rotary deposition zone. In addition, reactant vapors are passed through a reactant generating zone positioned adjacent and preferably enclosed within the rotary deposition zone which is heated to the reaction temperature to thereby generate at least a portion of the reactant vapors utilized in the deposition of the refractory coating. For example, titanium tetrachloride vapors are passed over chromium and titanium metal chips positioned within the generation zone to produce chromium dichloride and titanium trichloride reactant vapors. A suitable apparatus is also provided for generating at least a portion of the vaporous reactants and combining them with other vaporous reactants and directing them onto tumbling objects to be coated within a rotary deposition chamber.
Inventors
- 👤 Gene F Wakefield
Bibliographic Details
Claims Analysis
Total Claims: 1References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |