1-20 of 275

Search Results for hot corrosion

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
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001681
EISBN: 978-1-62708-234-1
... Abstract A microstructural analysis has been made of a burner nozzle removed from service in a coal gasification plant. The nozzle was a casting of a Co-29wt%Cr-19wt%Fe alloy. Extensive hot corrosion had occurred on the surface. There was penetration along grain boundaries, and corrosion...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001281
EISBN: 978-1-62708-215-0
... of hot corrosion caused by a combination of contaminants, cooling-hole blockage, and coating loss. Hot gas corrosion X-40 UNS R30031 High-temperature corrosion and oxidation Background The first-stage nozzles of a high-pressure turbine (HPT) section of an industrial gas turbine exhibited...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001109
EISBN: 978-1-62708-214-3
... process. The basic cause of degradation was found to be hot corrosion caused by the deposition of alkali sulfates and chlorides. However this degradation may have been aggravated by thermal cycling and abrasion. The source of the salt was impurities in the flux. Two potential solutions were proposed...
Image
Published: 01 January 2002
Fig. 11 Degradation of rupture for Udimet 500 due to hot corrosion at 705 °C (1300 °F) More
Image
Published: 01 January 2002
Fig. 11 Hot corrosion attack of René 77 nickel-base alloy turbine blades. (a) Land-based, first-stage turbine blade. Notice deposit buildup, flaking, and splitting of leading edge. (b) Stationary vanes. (c) A land-based, first-stage gas turbine blade that had type 2 hot corrosion attack. (d More
Image
Published: 30 August 2021
Fig. 21 (a) Type I hot corrosion at a blade tip IN-738 alloy. Note the subsurface sulfides (arrows). (b) Type II hot corrosion attack of a blade shank (below the platform) CMSX-4 (single-crystal) alloy. The sample was etched with Marble’s reagent to show the lack of alloy depletion under More
Image
Published: 01 December 1992
Fig. 3 Micrographs of grate bar that suffered hot corrosion. (a) Unetched, showing external oxide scale and internal sulfide particles (light gray area). (b) Etched, showing external oxide scale along with precipitated carbides (dark gray area)and lamellar structure consisting of austenite More
Image
Published: 01 December 1992
Fig. 6 Results of laboratory hot corrosion (cyclic) tests on HH steel coupons for 100h. (a) and (b) Coupons corroded undersulfate and sulfate-chloride loading, respectively (c) and (d) Corrosion morphology undersulfate and sulfate-chloride loading, respectively. More
Image
Published: 15 January 2021
Fig. 23 Effect of molten salt on hot corrosion at 700 °C (1290 °F) in air. With the lower melting temperatures of salt mixtures, the corrosion rate increases with increasing volume fraction of liquid. Courtesy of Z. Tang and B. Gleeson, University of Pittsburgh More
Image
Published: 01 June 2019
Fig. 11 Degradation of rupture for Udimet 500 due to hot corrosion at 705 °C More
Image
Published: 01 June 2019
Fig. 2 Degradation of rupture for Udimet 500 due to hot corrosion at 705 °C (1300 °F) More
Image
Published: 01 December 2019
Fig. 4 Macrograph showing the hot corrosion cavities found on the SS of the bucket More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001827
EISBN: 978-1-62708-241-9
... Abstract Gas turbines and other types of combustion turbomachinery are susceptible to hot corrosion at elevated temperatures. Two such cases resulting in the failure of a gas turbine component were investigated to learn more about the hot corrosion process and the underlying failure mechanisms...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001701
EISBN: 978-1-62708-219-8
... Biological corrosion A closed-loop hot water heating system at a museum in South Carolina was the subject of this failure evaluation. The system consisted of plain carbon steel pipes (Schedule 40) made of ASTM A 106 or A 53 (ERW or Seamless). The supply and return lines were made of the same materials...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001602
EISBN: 978-1-62708-229-7
... Abstract This article presents a failure analysis of 37.5 mW gas turbine third stage buckets made of Udimet 500 superalloy. The buckets experienced repetitive integral tip shroud fractures assisted by a low temperature (type II) hot corrosion. A detailed analysis was carried out on elements...
Book Chapter

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 Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... and metal dusting, sulfidation, hot corrosion, chloridation, hydrogen interactions, molten metals, molten salts, and aging reactions including sensitization, stress-corrosion cracking, and corrosion fatigue. It concludes with a discussion on various protective coatings, such as aluminide coatings, overlay...
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...
Book Chapter

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
..., the substitution of a more corrosion-resistant alloy, such as Incoloy 800 or 825, may be necessary. Activation Butt welds Pipes Residual stress Weld metal 316L UNS S31603 Stress-corrosion cracking Pitting corrosion Joining-related failures Type 316L stainless steel pipes carrying brine at 120...
Image
Published: 15 January 2021
Fig. 22 Schematic diagram of shipboard engine corrosion rates of type I and type II hot corrosion versus temperature in a marine environment compared with the Arrhenius oxidation rate versus temperature. LTHC, low-temperature hot corrosion; HTHC, high-temperature hot corrosion. Courtesy of U.S More