Characterisation of oxide scale formation on a new single crystal superalloy for power generation applications
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Characterisation of oxide scale formation on a new single crystal superalloy for power generation applications. / Sato, Atsushi; Chiu, Yu Lung; Marquis, Emmanuelle A.; Reed, Roger C.
In: Materials at High Temperatures, Vol. 29, No. 3, 01.08.2012, p. 272-278.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Characterisation of oxide scale formation on a new single crystal superalloy for power generation applications
AU - Sato, Atsushi
AU - Chiu, Yu Lung
AU - Marquis, Emmanuelle A.
AU - Reed, Roger C.
PY - 2012/8/1
Y1 - 2012/8/1
N2 - The oxidation behaviour at 950°C of a prototype nickel-based single crystal superalloy containing ~15 wt%Cr is studied, with and without silicon alloying. It is demonstrated that the alloy is a marginal alumina former, with further alloying by Si promoting the formation of a continuous, protective alumina scale. Transmission electron microscopy reveals that out-growing alumina forms during the early stages of oxidation. The presence of silicon within the alumina is detected using atom probe tomography.
AB - The oxidation behaviour at 950°C of a prototype nickel-based single crystal superalloy containing ~15 wt%Cr is studied, with and without silicon alloying. It is demonstrated that the alloy is a marginal alumina former, with further alloying by Si promoting the formation of a continuous, protective alumina scale. Transmission electron microscopy reveals that out-growing alumina forms during the early stages of oxidation. The presence of silicon within the alumina is detected using atom probe tomography.
KW - Heterogeneous nucleation of phase transformations
KW - Kinetics
KW - Nickel alloys
KW - Oxidation
KW - Superalloy
UR - http://www.scopus.com/inward/record.url?scp=84872703640&partnerID=8YFLogxK
U2 - 10.3184/096034012X13335334078005
DO - 10.3184/096034012X13335334078005
M3 - Article
AN - SCOPUS:84872703640
VL - 29
SP - 272
EP - 278
JO - Materials at High Temperatures
JF - Materials at High Temperatures
SN - 0960-3409
IS - 3
ER -