Abstract
| Original language | English |
|---|---|
| Title of host publication | 10th International Symposium on Corrosion in the Pulp and Paper Industry- ISCPPI. Vol. 2 |
| Place of Publication | Espoo |
| Publisher | VTT Technical Research Centre of Finland |
| Pages | 523-538 |
| ISBN (Electronic) | 951-38-5724-7 |
| ISBN (Print) | 951-38-5721-2 |
| Publication status | Published - 2001 |
| MoE publication type | A4 Article in a conference publication |
| Event | 10th International Symposium On corrosion in the Pulp and Paper Industry, ISCPPI - Helsinki, Finland Duration: 21 Aug 2001 → 24 Aug 2001 |
Publication series
| Series | VTT Symposium |
|---|---|
| Number | 215 |
| ISSN | 0357-9387 |
Conference
| Conference | 10th International Symposium On corrosion in the Pulp and Paper Industry, ISCPPI |
|---|---|
| Abbreviated title | 10th ISCPPI |
| Country | Finland |
| City | Helsinki |
| Period | 21/08/01 → 24/08/01 |
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Comparative laboratory testing of molten salt attack of superheater tube materials. / Oksa, Maria; Mäkipää, Martti.
10th International Symposium on Corrosion in the Pulp and Paper Industry- ISCPPI. Vol. 2. Espoo : VTT Technical Research Centre of Finland, 2001. p. 523-538 (VTT Symposium; No. 215).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
TY - GEN
T1 - Comparative laboratory testing of molten salt attack of superheater tube materials
AU - Oksa, Maria
AU - Mäkipää, Martti
PY - 2001
Y1 - 2001
N2 - In some practical superheater corrosion failure cases one finds that the corrosion environment has actually been a low-melting salt film spreading on the tube surface. In this study a modified crucible test method is introduced that simulates this corrosion condition. Metallic specimens exposed in air atmosphere as half-immersed into a molten alkali chloride - alkali sulphate salt mixture of eutectic composition in 520-530°C. Materials evaluation is based on the post-experiment examination of the specimens and their cross-sections. Low-alloy steels and various austenitic steels and nickel alloys were tested using this method. For low-alloy steels and austenitic stainless steels the characteristic corrosion attack mode was intergranular attack and growth of oxide scales. More corrosion resistant steels and alloys suffered from pitting attack. Corrosion morphologies observed had a close resemblance to practical corrosion morphologies in cases involving alkali sulphate - alkali chloride melt attack.
AB - In some practical superheater corrosion failure cases one finds that the corrosion environment has actually been a low-melting salt film spreading on the tube surface. In this study a modified crucible test method is introduced that simulates this corrosion condition. Metallic specimens exposed in air atmosphere as half-immersed into a molten alkali chloride - alkali sulphate salt mixture of eutectic composition in 520-530°C. Materials evaluation is based on the post-experiment examination of the specimens and their cross-sections. Low-alloy steels and various austenitic steels and nickel alloys were tested using this method. For low-alloy steels and austenitic stainless steels the characteristic corrosion attack mode was intergranular attack and growth of oxide scales. More corrosion resistant steels and alloys suffered from pitting attack. Corrosion morphologies observed had a close resemblance to practical corrosion morphologies in cases involving alkali sulphate - alkali chloride melt attack.
M3 - Conference article in proceedings
SN - 951-38-5721-2
T3 - VTT Symposium
SP - 523
EP - 538
BT - 10th International Symposium on Corrosion in the Pulp and Paper Industry- ISCPPI. Vol. 2
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -