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acid dew point corrosion

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430290
EISBN: 978-1-62708-253-2
...) wall thinning Fig. 6.118 Acid dew-point corrosion on external surface of an evaporator tube Fig. 6.121 Optical micrograph indicating fire-side intergranular stress corrosion cracking and grain dropping in superheater tube, 400× Fig. 6.122 Optical micrograph showing PASCC...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430147
EISBN: 978-1-62708-253-2
...) Chelate corrosion Fire-side corrosion: Waterwall corrosion or reduced atmosphere corrosion Fuel ash corrosion Coal-ash corrosion Oil-ash corrosion Hot corrosion Acid dew point corrosion or cold-end corrosion SCC Polythionic acid stress-corrosion cracking (PASCC) Fire...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820077
EISBN: 978-1-62708-339-3
... corrosion resistance in boiling 50% ferric sulfate-50% sulfuric acid solution. (b) No cracking as determined by slow bending around a 5 mm (0.2 in.) mandrel Results of ASTM A 763, practice Z, tests on as-welded ferritic stainless steels with titanium or niobium Table 8 Results of ASTM A 763...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870045
EISBN: 978-1-62708-299-0
... the crevice when the metal surface temperature falls below the dew point (see the discussion below on “Moisture Condensation”). Stain patches mar the shiny surface and impair the use of the sheet where surface appearance is important, though corrosion is shallow, and perforation rarely occurs, even on thin...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430376
EISBN: 978-1-62708-253-2
... 197 – 203 6.32 Andijani I. and Malik A.U. , “ Sulfur and Vanadium Induced Hot Corrosion of Boiler Tubes ,” presented at Chemistry & Industry Conference , 11 – 15 Dec 2004 ( Riyadh ) 6.33 Beychok M. , “ Chemical Engineering—Acid Dew Point ,” last modified Aug...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.9781627082532
EISBN: 978-1-62708-253-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080001
EISBN: 978-1-62708-304-1
... service with the surrounding environment, resulting in high-temperature corrosion. In gaseous environments, high-temperature corrosion is defined as the corrosion that takes place above the maximum temperature at which acids condense and dew-point corrosion takes place. Although a majority of high...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430204
EISBN: 978-1-62708-253-2
... A. , Hydrogen Damage , Power Point Chemistry , Vol 12 ( No. 2 ), 2010 , p 122 – 127 6.13 Bain D. and Christophersen D. , Some Common Mechanisms Leading to Failures in Heat Recovery Steam Generators , Corrosion 2003 , NACE International , March 2003 , p 185 – 213 6.14 Dooley...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310233
EISBN: 978-1-62708-326-3
... of metallurgy, and in the period 1910 to 1914, English researchers noticed that one of their experimental iron-base alloys containing approximately 12% Cr had a unique property. Unlike their other compositions, it did not rust when samples were left in the corrosive atmosphere near the acid-etch area...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910427
EISBN: 978-1-62708-250-1
... with a rubber stopper or stiff-bristle brush, chemical descaling, and electrochemical descaling. The recommended descaling solutions for each material and alloy system are identified in the corrosion testing standards (e.g., ASTM G 1). Inhibited hydrochloric acid for example, is recommended for the removal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120065
EISBN: 978-1-62708-269-3
.... Optimum shielding conditions are provided by welding within a permanent or collapsible clear plastic enclosure that has been evacuated and purged with argon at a dew point of –24 °C (–75 °F). Alternatively, localized trailing and backing shields can be used, particularly for automatic welding of simple...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870135
EISBN: 978-1-62708-299-0
... Cladosporium resinae, which produces a variety of organic acids (pH 3 to 4 or lower) and metabolizes certain fuel constituents. Aircraft that operate in tropical environments appear to be most vulnerable to microbiological corrosion ( Ref 45 ). Pitting corrosion is often present in microbiological...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030005
EISBN: 978-1-62708-282-2
... as the oxidizing agent in the cathodic corrosion reaction ( Eq 1 , 4 and Fig. 2 ). Due to the presence of H + ions, the moisture has a lower pH (often below 4.5). The addition of SO 2 air contamination, acid rain, results in a highly accelerated corrosion rate. Some metals, such as aluminum and zinc...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030349
EISBN: 978-1-62708-282-2
... corrosion can occur, and these are fine-tuned based on real corrosion measurement data from the pipeline environment itself. On-line, real-time corrosion-monitoring sensors and measurement devices at strategic points identified through ICDA will, in turn, offer a quick response to upset conditions inside...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030247
EISBN: 978-1-62708-282-2
... Atmosphere (above splash) Minute particles of sea salt are carried by wind. Corrosivity varies with height above water, wind velocity and direction, dew cycle, rainfall, temperature, solar radiation, dust, season, and pollution. Even bird droppings are a factor. Sheltered surfaces may deteriorate more...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910193
EISBN: 978-1-62708-250-1
...% versus the normal 1.8 to 2.8%) can improve corrosion resistance. Another material that has long been used for handling sulfuric acid is high-silicon iron. Iron with 14.5% Si has exceptional resistance to sulfuric acid in all concentrations to 100% up to the atmospheric boiling points. Corrosion rates...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870025
EISBN: 978-1-62708-299-0
..., aluminum corrodes in aqueous solutions because its oxides are soluble in many acids and bases, yielding Al 3+ ions in acids and AlO 2 − (aluminate) ions in bases. There are, however, instances when corrosion does not occur outside the passive range, for example, when the oxide film...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080249
EISBN: 978-1-62708-304-1
... dependent on alloy composition, is generally 800 to 950 °C (1470 to 1740 °F). The lower threshold temperature is believed to be the melting temperature of the salt deposit, and the upper temperature is the salt dew point ( Ref 3 ). This type of corrosion process is sometimes referred to as Type I hot...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090191
EISBN: 978-1-62708-266-2
...Abstract Abstract Irradiation-assisted stress-corrosion cracking (IASCC) has been a topic of engineering interest since it was first reported in the 1960s, having been observed in stainless steel cladding on light water reactor fuel elements. This chapter summarizes the results of decades...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080097
EISBN: 978-1-62708-304-1
... gases, such as CH 4 , C 3 H 8 , and so forth ( Ref 1 ). An endothermic gas enriched with about 10% natural gas (CH 4 ) is a commonly used atmosphere ( Ref 2 ). The typical endothermic gas consists of 39.8% N 2 , 20.7% CO, 38.7% H 2 , and 0.8% CH 4 , with a dew point of –20 to –4 °C (–5 to +25 °F) ( Ref...