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corrosion pitting

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030033
EISBN: 978-1-62708-282-2
...Abstract Abstract This chapter concentrates on the better-known and widely studied phenomenon of pitting corrosion of passive metals. The discussion focuses on different parameters that influence pitting corrosion, namely environment, metal composition, potential, temperature, surface condition...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870045
EISBN: 978-1-62708-299-0
...Abstract Abstract Pitting is the most common corrosion attack on aluminum alloy products. This chapter explains why pitting occurs and how it appears in different types of aluminum. It discusses pitting rates, pitting potentials, and pitting resistance as well as testing and prevention methods...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270118
EISBN: 978-1-62708-301-0
... initiated by corrosion pits in the root transition region. The chapter recommends further investigations to determine the cause of pitting, which appears to be confined to the dovetail region. compressor blades corrosion pitting fatigue failure SEM fractography Summary Background Visual...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270156
EISBN: 978-1-62708-301-0
.... Based on these findings, investigators concluded that the failure was due to a fatigue crack initiated from a corrosion pit, which may have been caused by chemicals released by the burning of bonding resin. fatigue fracture corrosion pits SEM fractography tail rotor blades visual examination...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910099
EISBN: 978-1-62708-250-1
... pitting damage. Fig. 33 Effect of temperature and velocity on attack of lead. The velocity of the 10% sulfuric acid was 12 m/s (39 ft/s) Fig. 34 Erosion-corrosion of lead as a function of sulfuric acid concentration. Velocity, 12 m/s (39 ft/s); temperature, 95 °C (203 °F) Fig...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240323
EISBN: 978-1-62708-251-8
...Abstract Abstract This chapter first covers some basic principles of electrochemical corrosion and then some of the various types of corrosion. Some of the more common types of corrosion discussed include uniform corrosion, galvanic corrosion, pitting, crevice corrosion, erosion-corrosion...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310027
EISBN: 978-1-62708-286-0
... potential versus pH for iron and (a) oxygen gas reduction and (b) hydrogen ionreduction Fig. 2 Schematic illustration of polarization behavior for a passive alloy with and without pitting occurring Fig. 3 Influence of alloying element on corrosion rate as explained by the effect...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610501
EISBN: 978-1-62708-303-4
...Abstract Abstract This chapter discusses common forms of corrosion, including uniform corrosion, galvanic corrosion, pitting, crevice corrosion, dealloying corrosion, intergranular corrosion, and exfoliation. It describes the factors that contribute to stress-corrosion cracking, hydrogen...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630211
EISBN: 978-1-62708-270-9
...Abstract Abstract This chapter outlines the major types of corrosion, their interactions, their complicating effects on fracture and wear, and some possible prevention methods. The types of corrosion considered in the chapter are galvanic corrosion, uniform corrosion, pitting corrosion, crevice...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310091
EISBN: 978-1-62708-286-0
... austenite (arrows) Abstract Abstract This chapter provides information on the structure, design aspects, mechanical properties, forming, machining, and corrosion resistance characteristics of duplex stainless steels. The different types of corrosion covered are general corrosion, pitting corrosion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270128
EISBN: 978-1-62708-301-0
...Abstract Abstract This chapter discusses the failure of a first-stage compressor blade in an aircraft engine and explains how investigators determined that it was caused by fatigue, with a crack originating from corrosion pits that developed in the root transition region on the convex side...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270158
EISBN: 978-1-62708-301-0
...Abstract Abstract This chapter discusses the failure of a control cable on an aircraft and the findings of an investigation that followed. The cable was made of stranded steel wire that was visibly worn. All seven strands had snapped and bore evidence of corrosion, pitting, nicks, and rubbing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230459
EISBN: 978-1-62708-298-3
... of the native oxides that form on the surface of beryllium and their ability to withstand acids, bases, and corrosive agents found in rain and seawater. It explains how carbides, inclusions, ions, and impurities contribute to corrosion damage, particularly pitting, and how corrosion reduces the ductility...
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
... or salts of the base material. This chapter discusses the process of corrosion and how to prevent or mitigate its effects. It describes several forms of corrosion, including uniform, intergranular, pitting, crevice, and stray-current corrosion, and the effects of stress-corrosion cracking, corrosion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820203
EISBN: 978-1-62708-339-3
...; indicates localized corrosion events and rates; well suited to MIC Electrical resistance Resistance measurement reflects loss of conductor cross section by pitting or general corrosion; robust, and suited to systems with multiphase flow; fouling by electrically conducting iron sulfides can cause...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460277
EISBN: 978-1-62708-285-3
... coating failure with nitrogen gas. However, in no instance was there any interface failure with the substrate. Similar repairs were carried out on the helicopter tail, as shown in Fig. 11.4(a) , to get rid of the corrosion pits by placing a new overlay aluminum coating on top of the magnesium alloy ( Ref...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310257
EISBN: 978-1-62708-286-0
... systems and the corrosion issues they face. This is followed by a discussion on the causes of the various forms of corrosion associated with liquids, namely pitting corrosion, crevice corrosion, intergranular corrosion, stress corrosion cracking, and erosion corrosion. The chapter also contains tables...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820043
EISBN: 978-1-62708-339-3
... Dark-colored corrosion products with iron sulfide, chloride, and a high ratio of Fe 2+ /Fe 3+ ; near-neutral pH SRB secondary oxidation Pitting stabilized by thiosulfate formed by oxidation of sulfides Cyclic anaerobic, aerobic conditions; surface of corrosion products in pit oxidized red, orange...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870219
EISBN: 978-1-62708-299-0
...Abstract Abstract This chapter describes the use of standardized tests to determine the susceptibility of aluminum alloys to specific forms of corrosion, including pitting, intergranular corrosion, filiform corrosion, exfoliation corrosion, and stress-corrosion cracking. aluminum alloys...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430204
EISBN: 978-1-62708-253-2
...) ID etched view having network of transgranuluar stress-corrosion cracks in the microstructure of slightly worked austenite grains with twins, 100× Fig. 6.109 (a) Transgranular crack initiating from a pit on ID surface, 200×. (b) Heat-affected zone comprising fine dendritic structure...