Microbiologically influenced corrosion of high molybdenum austenitic stainless steel

Conference · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6716393

Scott, P J.B. ^[1]; Davies, M ^[2]

---

1. Dept. of Geology, McMaster Univ., Hamilton, Ontario (CA)
2. Chemetics International Co., North York, Toronto, Ontario (CA)

Extensive literature exists documenting laboratory and field studies of corrosion of the 300 series stainless steels by bacteria. There is, however, little data confirming similar microbiologically influenced corrosion (MIC) of higher alloy stainless steels, which are thought by some to be immune. This paper presents a case history of a UNS NO8904 (904L) heat exchanger where marine bacterial attack was determined to be a factor in the corrosion failure. On-site sampling and testing confirmed the existence of this type of attack and developed a program of biocide treatment. Subsequent laboratory studies were undertaken to confirm the bacteria can induce and propagate pitting corrosion of a high molybdenum austenitic stainless steel.

• OSTI ID: 6716393
• Report Number(s): CONF-890437--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
423000 -- Engineering-- Marine Engineering-- (1980-)
ALLOYS
AUSTENITIC STEELS
BACTERIA
BIODEGRADATION
CHEMICAL REACTIONS
CORROSION
CORROSIVE EFFECTS
DECOMPOSITION
FIELD TESTS
HEAT EXCHANGERS
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MICROORGANISMS
MOLYBDENUM ALLOYS
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
OXYGEN COMPOUNDS
PITTING CORROSION
SEAWATER
STEELS
TESTING
WATER