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hydrochloric acid

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001718
EISBN: 978-1-62708-220-4
... Abstract Post-service destructive evaluation was performed on two commercially pure zirconium pump impellers. One impeller failed after short service in an aqueous hydrochloric acid environment. Its exposed surfaces are bright and shiny, covered with pockmarks, and peppered with pitting...
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
... Abstract A bent Ni-Cu Monel 400 alloy tube, which operated as part of a pipeline in a petrochemical distillery, failed by through-thickness cracking. The pipeline was used to carry a stream of gaseous hydrocarbons containing hydrochloric acid (HCl) into a reaction tower. The tower provided...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0046969
EISBN: 978-1-62708-227-3
..., 2.7x micrographic examination on sections etched with ferric chloride and hydrochloric acid in methanol) supported the conclusions that the blades failed by hot-corrosion attack. Variation in rate of attack on coated blades was attributed to variation in integrity of the aluminide coating, which had...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c0047529
EISBN: 978-1-62708-230-3
... to the outside of the head completed the groove for the circumferential attachment weld. Investigation (visual inspection and actual size views etched in hot 50% hydrochloric acid) supported the conclusion that cracking occurred in the HAZ in the head of the original design, originating in the sharp corner...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046966
EISBN: 978-1-62708-229-7
.... Analysis (visual inspection, 100x/500x metallographic examination of sections etched with a mixture of ferric chloride, hydrochloric acid, and methanol, and bend tests) supported the conclusions that cracking of the airfoil sections was caused by thermal fatigue and was contributed to by low ductility due...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001696
EISBN: 978-1-62708-234-1
... Abstract Piping and structural components used in space launch facilities such as NASA's Kennedy Space Center and the Air Force's Cape Canaveral Air Station face extreme operating conditions. Launch effluent and residue from solid rocket boosters react with moisture to form hydrochloric acid...
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Published: 01 January 2002
Fig. 40(b) Disk that was cut through the origin of the insert section shown in Fig. 40(a) . Hot-acid etching (50% aqueous hydrochloric acid at 70 °C, or 160 °F) revealed an unsound center condition that promoted the fracture. More
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Published: 01 January 2002
Fig. 13 Grain-boundary carbide films in a Waspaloy forging. The films substantially reduced stress-rupture life. The specimen was electropolished before replication in a solution containing (by volume) 100 parts hydrochloric acid, 50 parts sulfuric acid, and 600 parts methanol. Transmission More
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Published: 15 January 2021
Fig. 16 Grain-boundary carbide films in a Waspaloy forging. The films substantially reduced stress-rupture life. The specimen was electropolished before replication in a solution containing (by volume) 100 parts hydrochloric acid, 50 parts sulfuric acid, and 600 parts methanol. Transmission More
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Published: 30 August 2021
of the insert section. Hot-acid etching (50% aqueous hydrochloric acid at 70 °C, or 160 °F) revealed an unsound center condition that promoted the fracture. More
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Published: 01 January 2002
Fig. 20 Hydrogen damage (dark area) in a carbon steel boiler tube. The tube cross section was macroetched with hot 50% hydrochloric acid. More
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Published: 01 June 2019
Fig. 3 Flange disk according to Fig. 2 , section parallel to fracture plane, Etch: Diluted hydrochloric acid 1:1, 70° C. 2.5 × More
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Published: 01 June 2019
Fig. 1 a. Transverse fracture. b. Inner surface at transverse fracture. Views. N = groove at exterior, G = uppermost thread inside. Fracture descaled with dilute hydrochloric acid with inhibitor. Approx. 1 × More
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Published: 01 June 2019
particles. Etched with a mixture of ferric chloride, hydrochloric acid, and methanol. (a) 100x. (b) 500x More
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Published: 01 January 2002
Fig. 21 Weld attaching the head to the shell of a steam preheater that cracked because of poor root penetration in original and first replacement joint designs. (a) and (b) Sections taken through the head-to-shell joint. Etched in hot 50% hydrochloric acid. Actual size. The section More
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Published: 01 June 2019
Fig. 1 Weld attaching the head to the shell of a steam preheater that cracked because of poor root penetration in original and first replacement joint designs. (a) and (b) Sections taken through the head-to-shell joint. Etched in hot 50% hydrochloric acid. Actual size. The section More
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Published: 01 June 2019
) Section taken through the leading edge of another blade showing oxide-filled crack following a grain boundary. 250x. Both etched with ferric chloride and hydrochloric acid in methanol. More
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Published: 01 June 2019
, and in (d) has penetrated into the base metal. (b), (c), and (d) Etched with ferric chloride and hydrochloric acid in methanol More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001251
EISBN: 978-1-62708-235-8
... of the flange disk for macroscopic metallographic examination. it was pickled with diluted hydrochloric acid. This caused the erosion of a coarse-meshed network that coincided with the primary grain boundaries in the globular solidified inner zone, but cut across the dendrites in the crystallized outer zone...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0091330
EISBN: 978-1-62708-234-1
... Hydrochloric acid Sulfuric acid Hastelloy C-276 UNS N10276 Pitting corrosion “Green Death” is a corrosive medium used to test for pitting resistance composed of 11.9% H 2 SO 4 + 1.3% HCl + 1% FeCl 3 + 1% CuCl 2 . The solution is heated to boiling, 103 °C (217 °F), for the test. Such a corrosive...