Effects of Yttrium on Cyclic Oxidation Resistance of Co-10Cr-5Si Alloy
2013 ◽
Vol 785-786
◽
pp. 914-917
Keyword(s):
The cyclic oxidation behavior of Co-10Cr-5Si alloys with and without Y in atmosphere at 800 °C was investigated. The addition of 0.3 at.% Y decreased the average parabolic rate constant from 4.45×10-10g2cm-2s-1to 3.58×10-10g2cm-2s-1. The thin scales grown on Co-10Cr-5Si alloys were mainly composed of an outer CoO layer, followed by an inner protective SiO2layer. However, the scales can not be observed for Co-10Cr-5Si-0.3Y alloy, probably due to the spallation of the scales during the cooling process. The addition of 0.3 at.% Y improved the cyclic oxidation resistance of the Co-10Cr-5Al alloy.
2014 ◽
Vol 525
◽
pp. 154-157
Keyword(s):
2002 ◽
Vol 17
(11)
◽
pp. 2974-2981
◽
2000 ◽
Vol 15
(7)
◽
pp. 1478-1482
◽
2018 ◽
Vol 6
(1)
◽
pp. 45
◽
Keyword(s):
2014 ◽
Vol 1015
◽
pp. 505-508
Keyword(s):