Corrosion investigation in supercritical water oxidation process environments
- Lockheed Idaho Technologies Co., Idaho Falls, ID (United States). Idaho National Engineering Lab.
A corrosion investigation was done at MODAR, Inc., using a supercritical water oxidation (SCWO) vessel reactor. Several types of multilayered ceramic rings and experimental nickel alloy coupons were exposed to a chlorinated cutting oil, TrimSol, in the SCWO process. A corrosion casing was designed and mounted in the vessel reactor with precautions to minimize chances of degrading the integrity of the pressure vessel. Fifteen of the ceramic coated rings were stacked vertically in the casing at one time for each test. There was a total of 36 rings. The rings were in groupings of three rings that formed five sections. Each section saw a different SCWO environment, ranging from 650 C to 300 C. The metal coupons were mounted on horizontal thread holders welded to a vertical rod attached to the casing cover in order to hand down the middle of the casing. The experimental nickel alloys performed better than the baseline nickel alloys. A titania multilayered ceramic system sprayed onto a titanium ring remained intact after 120--180 hours of exposure. This is the longest time any coating system has withstood such an environment without significant loss.
- DOE Contract Number:
- AC07-94ID13223
- OSTI ID:
- 435662
- Report Number(s):
- CONF-951135-; ISBN 0-7918-1751-2; TRN: IM9710%%320
- Resource Relation:
- Conference: 1995 International mechanical engineering congress and exhibition, San Francisco, CA (United States), 12-17 Nov 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the ASME Heat Transfer Division. Volume 2: Fire and combustion systems; Thermal-hydraulics in nuclear and hazardous waste processing and disposal; Transport phenomena in materials processing; HTD-Volume 317-2; Atreya, A. [ed.] [Univ. of Michigan, Ann Arbor, MI (United States)]; Gritzo, L. [ed.] [Sandia National Labs., Albuquerque, NM (United States)]; Saltiel, C. [ed.] [SCRAM Technology, Inc., Gainesville, FL (United States)] [and others]; PB: 592 p.
- Country of Publication:
- United States
- Language:
- English
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