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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046535
EISBN: 978-1-62708-234-1
... decrease near the point of failure of about 1.3 to 1.7 V. Recommendations included that the pipelines be asphalt coated and enclosed in a concrete trough with a concrete cover. Also, magnesium anodes, connected electrically to each line, should be installed at periodic intervals along their entire length...
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
...-control methods, equipment, and services; cost of labor attributed to corrosion management; cost of use of more expensive materials to lessen corrosion damage; and cost of lost revenue, loss of reliability, and loss of capital due to corrosion deterioration. Only selected industrial sectors were analyzed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001486
EISBN: 978-1-62708-234-1
..., there are aspects that lend support to the corrosion hypothesis. It is considered that the impact forces may only serve to remove the protective oxide film normally present on the surface, and that the hare regions thus produced become anodic to the remainder and local corrosion cells are set up, the anodic regions...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001820
EISBN: 978-1-62708-241-9
... a flowing fluid, such as sour gas, steam, or chemical compounds to compensate for the load disturbance and keep the regulated process variable as close as possible to the desired set point [ 3 ]. Scheduled and unscheduled shutdowns for repairing corrosion damage or replacing corroded equipments...
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
... ). Such costs include the cost of corrosion-control methods, equipment, and services; cost of labor attributed to corrosion management; cost of using more expensive materials to lessen corrosion damage; and cost of lost revenue, loss of reliability, and loss of capital due to corrosion deterioration...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001695
EISBN: 978-1-62708-229-7
..., the positive charged ions leave the surface of the anode into the electrolyte solution leaving electrons behind to flow through the metal to the cathode. At the cathode, the electrons are consumed by the hydrogen ions at the surface and hydrogen gas is liberated. The oxidation and deterioration of the anode...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001832
EISBN: 978-1-62708-241-9
... Abstract High-level radioactive wastes generated during the processing of nuclear materials are kept in large underground storage tanks made of low-carbon steel. The wastes consist primarily of concentrated solutions of sodium nitrate and sodium hydroxide. Each of the tanks is equipped...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001691
EISBN: 978-1-62708-234-1
.... It causes equipment to fail because of perforation with only a small percent weight loss of the entire structure. It is difficult to detect pits because of their small size and because the pits are often covered with corrosion products. It is difficult to measure quantitatively and compare the extent...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
... to generalized uniform chemical attack—described in the section “Uniform Corrosion” —in which the anodes and cathodes of the cells are numerous, small, and close together. The analysis of corrosion failures and the development of suitable corrective measures require not only a basic understanding...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046418
EISBN: 978-1-62708-234-1
... Abstract Equipment in which an assembly of in-line cylindrical components rotated in water at 1040 rpm displayed excessive vibration after less than one hour of operation. The malfunction was traced to an aluminum alloy 6061-T6 combustion chamber that was part of the rotating assembly. Analysis...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... uniform chemical attack—described in the section “Uniform Corrosion”—in which the anodes and cathodes of the cells are numerous, small, and close together. The analysis of corrosion failures and the development of suitable corrective measures require not only a basic understanding of electrochemistry...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001064
EISBN: 978-1-62708-214-3
... hydrotesting procedures was recommended to prevent similar failures. Bacterial corrosion Chemical processing equipment, corrosion Leakage Pipe, corrosion 304 UNS S30400 Biological corrosion Pitting corrosion Background The type 304 stainless steel pipelines, vessels, and tanks...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001560
EISBN: 978-1-62708-217-4
... as the reference electrode, and a platinum electrode as the auxiliary electrode. A PAR 175 universal programmer, PAR 173 potentiostat with model 376 logarithmic current converter interface, and a H.P. 7044 x-y recorder comprised the test equipment. ASTM standard G-59-78 entitled “Standard Practice for Conducting...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c0047606
EISBN: 978-1-62708-228-0
... and with a SEM in the laboratory. The examinations revealed a combination of failure mechanisms. The pitting failure of the welds was attributed to localized attack of an activated surface, in which anodic pits corroded rapidly. Additionally, SCC driven by residual welding stresses occurred in the base metal...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001808
EISBN: 978-1-62708-241-9
... stainless steel (austenitic wrought stainless steel) UNS S31603 Introduction Unfortunately, numerous industries have experienced microbiologically influenced corrosion (MIC). Microbiologically influenced corrosion can cripple critical equipment, such as a fire sprinkler system, in relatively short...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0047645
EISBN: 978-1-62708-229-7
... of fatigue. A blue etch-anodize inspection showed the presence of an alpha case along the edges of the repair weld. The alpha case, a brittle oxide-enriched layer, forms when welds are inadequately shielded from the atmosphere during deposition. The brittleness of this layer caused transgranular cracks...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0091394
EISBN: 978-1-62708-227-3
... is typical of pipe, neither very rough nor smooth. The relative surface area of the cathode to anode is large because of the expanse of the pipe involved. Corrosion by pitting starts, the dense acid puddles by gravity over a relatively wide area, and the remainder of the pipe section acts as a cathode...
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
..., and so on. Microbial Involvement in Corrosion Corrosion involves the oxidation of metal atoms, M , in an anodic region with a loss of electrons to a complementary reduction reaction in a cathodic region elsewhere on the metal surface ( Fig. 2 ). In the reduction reaction, an electron acceptor, X...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0091669
EISBN: 978-1-62708-227-3
... mm ( 1 4 to 3 4 in.) outside-diameter fuel lines, were removed for further inspection. The nuts had been anodized then dyed for identification. Visual and low-magnification examination showed that the cracks had originated in the round section at the threaded end and had...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003533
EISBN: 978-1-62708-180-1
... column, signal detection and display equipment, and vacuum system. It discusses the preparation of samples for observation using an SEM and describes the application of SEM in fractography. If the surface remains unaffected and undamaged by events subsequent to the actual failure, it is often a simple...