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air-chemical pollutants

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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001383
EISBN: 978-1-62708-215-0
... in this application must be able to withstand the severe environment to which they are subjected. This environment includes corrosive conditions from road salt and acid-forming air pollutants. In the last several years, the truck industry has upgraded the strength level of wheel studs from SAE Grade 5 to SAE Grade 8...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001827
EISBN: 978-1-62708-241-9
... clean gas to crude oil are typically used, and all of these fuels can contain sulfur, sodium, potassium, vanadium, lead, and molybdenum as contaminants. The airborne pollutants entering with the inlet air depend on the turbine location, but include sodium, sulfur, chlorine, and calcium. These impurities...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
... + + e → M Hydrogen evolution is a common cathodic reaction because acid or acidic media are frequently encountered. Oxygen reduction is very common, because any aqueous solution in contact with air is capable of producing this reaction. Metal-ion reduction and metal deposition are less-common...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... + + e − → M Hydrogen evolution is a common cathodic reaction, because acid or acidic media are frequently encountered. Oxygen reduction is very common, because any aqueous solution in contact with air can produce this reaction. Metal ion reduction and metal deposition are less common...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001147
EISBN: 978-1-62708-219-8
... early days was exposed to the presence of salt water in its vicinity. Currently, although the water is fresh, the distance to the Boston harbor is rather small so that the salt air and its corrosive capabilities are present. In addition, modern usage calls for the application of road salt...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... Fig. 25 Effect of p SO 2 on Na 2 SO 4 -induced corrosion at 700 °C (1290 °F). 2.5 ppm atmospheric SO 2 can greatly accelerate hot corrosion over that in clean air conditions. With Na 2 SO 4 salt deposit, the catalyzed O 2 -0.1%SO 2 atmosphere causes accelerated attack at 700 °C by forming CoSO...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003556
EISBN: 978-1-62708-180-1
... material above the scaling temperature is contacted by air. The result is a migration of chromium into the surface scale, leaving underlying material depleted and susceptible to corrosion. Removing the heat-tinted scale and underlying surface by pickling, electrochemical cleaning, or mechanical grinding...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006788
EISBN: 978-1-62708-295-2
... equipped with flow meters, chemical-injection pumps, pressure transducers, corrosion probes, and flush-mounted studs for sampling surface deposits and weight-loss measurements Fig. 16 Current density needed to sustain a set cathodic protection potential as a function of iron sulfide present...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
...: Inclusions G 110: Metallic inclusions G 111 (a) Metallic inclusions whose appearance, chemical analysis or structural examination show to be caused by an element foreign to the alloy Metallic inclusions G 112 (a) Metallic inclusions of the same chemical composition as the base metal...