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molten salt corrosion

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080409
EISBN: 978-1-62708-304-1
... Abstract Containment materials used in power generating applications are subject to molten salt corrosion. This chapter reviews the data relevant to corrosion problems in molten salt environments. It describes the corrosion behavior of steel, aluminum, nickel, and titanium alloys in molten...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090271
EISBN: 978-1-62708-266-2
... cracking velocities were noted in fused sodium hydroxide containing halides. The studies to date strongly suggest an anodic halide dissolution mechanism for SCC. A cathodic explanation involving hydrogen does not fit the molten salt SCC behavior observed. Fig. 10.24 Stress-corrosion cracking...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060369
EISBN: 978-1-62708-261-7
... Alloys of gold or platinum with nickel, copper, or silver Nitric, chromic, and sulfuric acids Nickel, copper, or silver (parting) High-nickel alloys Molten salts Chromium, iron, molybdenum, and tungsten Cobalt-tungsten-chromium alloys Not reported Cobalt Medium-carbon and high-carbon...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090303
EISBN: 978-1-62708-266-2
..., strong alkalis, saline solutions, and some molten salts. Zirconium also resists attack by certain oxidizing media, unless halides are present. Zirconium is characterized by a high melting point, adequate strength, good thermal conductivity, low thermal expansion, great transparency to thermal...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120085
EISBN: 978-1-62708-269-3
... of scale and how it can be removed via belt grinding, abrasive blasting, and molten salt descaling baths. It also discusses the role of acid pickling, barrel finishing, polishing, and buffing as well as the use of chemical conversion coatings and protective platings. barrel finishing chemical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080249
EISBN: 978-1-62708-304-1
.... It is generally believed that the molten sodium sulfate deposit is required to initiate hot corrosion attack. The temperature range for hot corrosion attack, although dependent on alloy composition, is generally 800 to 950 °C (1470 to 1740 °F). The lower threshold temperature is believed to be the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030025
EISBN: 978-1-62708-282-2
... burning liquid fuels can be described as type I hot corrosion, which occurs primarily in the metal temperature range of 850 to 950 °C (1550 to 1750 °F). This is a sulfidation-based attack on the hot gas path parts involving the formation of condensed salts, which are often molten at the turbine operating...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030172
EISBN: 978-1-62708-282-2
... immersion of cobalt steels in magnesium melts, iron, nickel, and copper are common contaminants that can be readily introduced through poor molten-metal-handling practices. These elements must be held to levels under their individual solubility limits, or their activity must be moderated through the use of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280287
EISBN: 978-1-62708-267-9
... reaction. A second requisite condition for fluxing to occur is that the acidity (or basicity) of the molten salt be such that the oxide scale is thermodynamically unstable, therefore favoring the formation of a nonprotective (soluble) reaction product. The liquid sulfate medium is important, because...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.9781627083157
EISBN: 978-1-62708-315-7
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120123
EISBN: 978-1-62708-269-3
... to seawater for about 18 years has undergone only superficial discoloration. Molten sulfur, many organic compounds (including acids and chlorinated compounds), and most oxidizing acids have essentially no effect on this metal. Consequently, titanium is used extensively for handling salt solutions...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.9781627082822
EISBN: 978-1-62708-282-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350011
EISBN: 978-1-62708-315-7
... electrolyte is necessary for corrosion to occur. Water, especially salt water, is an excellent electrolyte. Electricity passes from a negative area to a positive area through the electrolyte. For corrosion to occur in metals, one must have (a) an electrolyte, (b) an area or region on a metallic surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.9781627082501
EISBN: 978-1-62708-250-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030003
EISBN: 978-1-62708-282-2
... there are concerns about materials for use in molten salt and liquid metal environments. Gaseous corrosion is usually associated with high-temperature environments. Atmospheric corrosion is not considered a part of gaseous corrosion because the corrosion reaction occurs in a thin aqueous layer on the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030235
EISBN: 978-1-62708-282-2
... volatile phases and molten salts. It is important for designers and others to recognize that several corrosion elements might simultaneously be involved in an application (e.g., oxygen, halogen, and sulfur) ( Table 2 ). Materials selection for high-temperature service needs to be reviewed for each...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870191
EISBN: 978-1-62708-299-0
... Oxidation, scales Heat-transfer effects Molten deposits Condensation and dewpoint Control Surface cleaning and preparation Coatings Cathodic protection Inhibitors Inspection Planned maintenance Source: Ref 1 Aluminum products sometimes are coated on one or...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910237
EISBN: 978-1-62708-250-1
.... Niobium resists a variety of corrosive environments, including concentrated mineral acids, organic acids, liquid metals (particularly sodium and lithium), metal vapors, and molten salts. Niobium, like other reactive metals, derives its corrosion resistance from a readily formed, adherent, passive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870179
EISBN: 978-1-62708-299-0
... and BCl 3 (g) for the deposition of a Ti-B coating on the graphite fibers. The coating improves wettability of the fibers in molten aluminum. Because the Ti-B VD method is a source of residual chloride, this processing route can have a deleterious effect on corrosion performance, for example...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910363
EISBN: 978-1-62708-250-1
... coating types are used in applications requiring a combination of corrosion and wear resistance. Hot dipping is a process in which a protective coating is applied to a metal by immersing it in a molten bath of the coating metal. Hot-dip coatings can be used to protect a number of metals; those...