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http://nopr.niscpr.res.in/handle/123456789/24385| Title: | Creep rupture of Nimonic-90 under salt-induced high temperature corrosion |
| Authors: | Ghosh, K S |
| Issue Date: | Apr-2000 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Materials used in hot section components of gas and steam turbines, boilers, etc., undergo deterioration and degradation due to simultaneous actions of aggressive salts deposit hot corrosion and mechanical stresses developed at the high operating temperatures. Creep-ruptured properties are reported here at different stress levels at 650, 700 and 750°C on Nimonic-90 specimens in air and coated with ternary salt mixture of Na2SO4-NaVO3NaCI (in 50, 30 and 30 mole %). To assess the extent of hot corrosion, coupons of Nimonic-90 uniformly coated with the ternary salt mixture are exposed into a furnace for 170-180 h at 650, 700 and 750°C. The various corrosion products have been identified by XRD technique. The probable chemical reactions and hot corrosion mechanisms are also discussed. |
| Page(s): | 69-76 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Appears in Collections: | IJEMS Vol.07(2) [April 2000] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJEMS 7(2) 69-76.pdf | 1.19 MB | Adobe PDF | View/Open |
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