1-20 of 85 Search Results for

Sulfuric acid, environment

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001066
EISBN: 978-1-62708-214-3
... impermeable to the diffusion of ionic species was recommended. Chemical processing equipment Nitric acid, environment Spools, corrosion Sulfuric acid, environment Teflon-lined carbon steel Intergranular corrosion Stress-corrosion cracking Selected References • Lampman S...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001071
EISBN: 978-1-62708-214-3
... body juncture be redesigned to reduce stress levels. A method of maintenance and inspection in concert with a criterion for life prediction for this and other valves and components in the system was also recommended. Chemical processing equipment Gatevalves Sulfuric acid, environment Gray iron...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001069
EISBN: 978-1-62708-214-3
... characteristic of acid dissolutions; no IGSCC was found. The fact that an identical cladding segment, similar in composition and microstructure to the affected plate, was unaffected under similar environmental exposure suggests locked-in residual stresses as the most probable root cause. It is likely that the...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001901
EISBN: 978-1-62708-218-1
... Abstract Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to analyze an automotive polyoxymethylene (POM) sensor housing that was depolymerizing during service. It was found that a combination of heat, oxygen, and sulfuric acid attacked and caused premature...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001775
EISBN: 978-1-62708-241-9
... dispersive x-ray analysis (EDXA) indicated significant segregation of sulfur and chlorine along the grain boundaries. Failure was attributed to hypochlorous-acid (HClO)-induced stress-corrosion cracking (SCC). The HClO was formed by the reaction of HCl with atmospheric O 2 that entered the tube during...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091674
EISBN: 978-1-62708-217-4
... hinge brackets in service for cracks and for proper maintenance of paint. Also suggested was replacing the aluminum alloy 2015-T6 with alloy 7075-T6, and surface treatment for the 7075-T6 brackets was recommended using sulfuric acid anodizing and dichromate sealing. Finally, it was also recommended that...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091678
EISBN: 978-1-62708-217-4
... the lug were evidence that the surface protection of the part had been inadequate as manufactured or had been damaged in service and not properly repaired in routine maintenance. Recommendations included anodizing the lug and barrel in sulfuric acid and giving them a dichromate sealing treatment...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001070
EISBN: 978-1-62708-214-3
... the corrosion to an acceptable limit. Chemical processing equipment Sulfuric acid, environment UNS S31603 UNS N08020 316L 20Cb Uniform corrosion Reference 1. Kiefer G.C. and Renshaw W.G. , The Behavior of the Chromium-Nickel Stainless Steels in Sulfuric Acid...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001394
EISBN: 978-1-62708-234-1
.... Corrosion environments Impellers Optical microscopy Pumps Spindles Sulfuric acid Fe-23Cr-18Ni-1.8Mo Intergranular fracture Intergranular corrosion The pump spindle, which was 1 in. in diameter, fractured within the length covered by the boss of the impeller which was attached to the spindle by...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001454
EISBN: 978-1-62708-220-4
... Abstract The interior of a cylindrical tank used for the road transport of concentrated sulfuric acid revealed severe blistering of the plates, mainly over the crown and more particularly on the first ring. The tank, made in 1958, was of welded construction, the material being mild steel plate...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001320
EISBN: 978-1-62708-215-0
... The pitting found on the internal surface of this tube sample results from underdeposit acidic attack, promoted by the presence of chlorine. Certain sulfur compounds can add to pit acidity. Acidic conditions can occur underneath built-up internal deposits and attack the tube metal. The copper in the...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001030
EISBN: 978-1-62708-214-3
... propagated by stress-corrosion cracking. The cause of cracking was twofold: use of interference-fit fasteners exposed to moisture intrusion from a marine environment and poor hole quality. Failure was intensified by dissimilar-metal contact in the presence of weak acidic electrolyte (dissociated MoS2...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001774
EISBN: 978-1-62708-241-9
... species such as chlorides, caustic, sulfides, and polythionic acids are present in the environment in sufficient quantities [ 4 – 6 ]. In the present case, the absence of chlorine and alkali metals, and the presence of sulfur in the corrosion products indicate that the most probable mechanism of failure...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001824
EISBN: 978-1-62708-241-9
... environment was static and probably became more acidic because of oxygen depletion. This effect coupled with the presence of chloride ions, elemental sulfur, and high temperature (above 60 °C) assisted in the initiation of pits at the thread roots. Eventually chloride stress-corrosion cracking initiated and...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001034
EISBN: 978-1-62708-214-3
... steel (although similar conditions have been attributed to chloride induced pitting). Fig. 9 Cross section through a typical pit in the weld metal. Electrolytically etched in 10% oxalic acid. 16×. Fig. 10 Cross section of pits at the surface away from the weld metal. Electrolytically...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001323
EISBN: 978-1-62708-215-0
... aggravated by the presence of silicon and sulfur (silicates and sulfates). It was recommended that the tubes be replaced with Inconel 600 or 601, as a practical option until the carryover problem could be solved. Alkalies, environment Boiler tubes Environmental effects Inconel 600, 601 Sodium...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001339
EISBN: 978-1-62708-215-0
... surface with concentrated nitric acid, which is known not to affect the fracture appearance ( Ref 2 ). Figure 6 shows the general appearance of the through-wall crack. The crack originated on the inside (hydrocarbon side) of the pipe (to the right of the arrow in Fig. 6 ). This area was actually the...
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
... oxidation, carburization, metal dusting, nitridation, carbonitridation, sulfidation, and chloridation. Several other potential degradation processes, namely hot corrosion, hydrogen interactions, molten salts, aging, molten sand, erosion-corrosion, and environmental cracking, are discussed under boiler tube...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001648
EISBN: 978-1-62708-234-1
...-product of this existence was an acid that locally inoculated the coupling material. This environment, combined with residual stress in the coupling, allowed hydrogen stress cracks to develop and propagate to ultimate fracture of the part. The fracture was, therefore, due to microbiological-induced...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
...-hardened neck regions of a type 316L stainless steel screen that was exposed to printing press exhaust fumes containing toluene, sulfur, chlorine, phosphorus, moisture, and other impurities. (a) Unetched, picture width ∼6 mm. (b) Enlarged view of the cracks; 10% oxalic acid electrolytic etch, picture width...