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THE PROPERTY OF WATER VAPOR OXIDATION RESISTANCE OF T91 STEEL TREATED BY SHOT BLASTED ANDELECTROPHORESIS DEPOSITED RE COATING |
Xingeng Li;Xuegang Wang;Jiawen He |
西安交通大学 |
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Abstract T91 steels with and without the treatments,shot bla sted (shot),electrophoresis deposited RE coating (RE),and combined treatments of shot blasted and deposited RE coating (shot+RE),were oxidized at 600℃ in water vapor for 300 hours by tubing device containing high temperature deoxidizing wa ter vapor.The results show that the combined treatments can decrease the parabol ic rate constant,effectively improve the property of water vapor oxidation resis tance and be superior to deposited RE coating only.Through combined treatments,t he grain size of the oxide scale deceases from 3~5 μm to 0.5 μm.The effects o f shot blasted and electrophoresis deposition RE coating on the oxidation mechan ism are analyzed,and the effects of the combined treatments on diffusion mechani sm in the oxidation process and the oxide scale phase forms are also discussed.
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Received: 03 December 2001
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Corresponding Authors:
Xingeng Li
E-mail: lxgeng204@sohu.com
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