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Co-Ni-Cr-Al-Y (cobalt-nickel-chromium-aluminum-yttrium alloy)

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001829
EISBN: 978-1-62708-241-9
... oxidation thermal-barrier coated superalloys spalling microstructural analysis operating time ECY768 (cobalt-base superalloy) Co-Ni-Cr-Al-Y (cobalt-nickel-chromium-aluminum-yttrium alloy) Introduction The largest use of coatings on superalloys is on components in the hot gas section...
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
... prevented the continuous formation of Cr 2 O 3 at sites with sufficient sulfur concentrations to form NiS ( Ref 23 ). The higher chromium content of the Ni-28Cr alloy reduced the substrate area that was depleted of chromium ( Ref 23 ). Sulfur can be transported through the Al 2 O 3 and Cr 2 O 3...
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
... formation of Cr 2 O 3 at NiS sites. The higher chromium content of the Ni-28Cr alloy reduced the substrate area that was depleted of chromium ( Ref 25 ). Sulfur is transported through the Al 2 O 3 and Cr 2 O 3 protective scales under certain conditions, resulting in discrete sulfide precipitates...