Pandey, J L and Prakash, S and Mehta, M L (1990) Effects of varying the zirconium concentration and 1 wt.% Y on high temperature oxidation of Fe-15wt.%Cr-4wt.%Al alloy under isothermal and cyclic conditions. Journal of the Less Common Metals, 159 ( ). pp. 23-24.
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The effect of a 1 wt.%Zr on the oxidation behaviour of Fe-15wt.%Cr-4wt.%Al alloy under isothermal conditions in air, O2 and O2-10%H2O environments in the temperature range 1000–1150 °C was investigated. Also the effect of varying the zirconium concentration was studied at 1200 °C in air. Cyclic oxidation testing was carried out in the temperature range 1150–1300 °C in air. Under isothermal oxidation, 1 wt.% Zr has a deleterious effect in O2 and air, but it has a beneficial effect in the O2-10%H2O environment. 0.2 wt.% Zr is most effective in increasing the oxidation resistance of the Fe-15wt.%Cr-4wt.%Al alloy under both isothermal and cyclic oxidation conditions. X-ray diffraction showed the scale to be mainly α-Al2O3 with little Cr2O3 in the case of Fe-15wt.%Cr-4wt.%Al alloy. ZrO2 and YCrO3 were incorporated in the scale with α-Al2O3 in the alloys containing 1 wt.% Zr and 1 wt.% Y respectively.
|Uncontrolled Keywords:||Zirconium concentration; Cyclic conditions|
|Divisions:||Business Development and Monitoring|
|Deposited By:||Sahu A K|
|Deposited On:||09 Jun 2010 13:59|
|Last Modified:||07 Feb 2012 14:38|
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