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Corrosion–erosion test of SS316 in flowing Pb–Bi
- Source :
-
Journal of Nuclear Materials . May2003, Vol. 318 Issue 1-3, p348. 7p. - Publication Year :
- 2003
-
Abstract
- Corrosion tests of austenitic stainless tube were done under flowing Pb–Bi conditions for 3000 h at 450 °C. Specimens were 316SS produced as a tubing form with 13.8 mm outer diameter, 2 mm thickness and 40 cm length. During operation, maximum temperature, temperature difference and flow velocity of Pb–Bi at the specimen were kept at 450, 50 °C, and 1 m/s, respectively. After the test, specimen and components of the loop were cut and examined by optical microscope, SEM, EDX, WDX and X-ray diffraction. Pb–Bi adhered on the surface of the specimen even after Pb–Bi was drained out to the storage tank from the circulating loop. Results differed from a stagnant corrosion test in that the specimen surface became rough and the corrosion rate was maximally 0.1 mm/3000 h. Mass transfer from the high temperature to the lower temperature area was observed: crystals of Fe–Cr were found on the tube surface in the low-temperature region. The sizes of crystals varied from 0.1 to 0.2 mm. The depositing crystals were ferrite grains and the chemical composition ratio (mass%) of Fe to Cr was 9:1. [Copyright &y& Elsevier]
- Subjects :
- *AUSTENITIC steel
*CORROSION & anti-corrosives
Subjects
Details
- Language :
- English
- ISSN :
- 00223115
- Volume :
- 318
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Journal of Nuclear Materials
- Publication Type :
- Academic Journal
- Accession number :
- 9721561
- Full Text :
- https://doi.org/10.1016/S0022-3115(03)00017-5