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Study of mechanism of oxidation resistance enhancement induced by preformed oxide on zirconium alloys

机译:锆合金上预制氧化物引起的抗氧化增强机理的研究

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摘要

The mechanism of oxidation resistance enhancement induced by preformed oxides formed on zirconium alloys was studied. Several tests revealed that preformed oxides formed on Zr-1Nb-1Sn-0.1Fe, Zr-1.1Nb-0.05Cu, and pure-Zr enhanced the oxidation resistance during subsequent oxidation. In addition, the preformed oxides enhanced the oxidation resistance only when they were cooled. Based on the experimental results of present and previous studies, several hypotheses that have been proposed to demonstrate the mechanism of the oxidation resistance enhancement were evaluated. It appears that the monoclinic phase and twin boundaries in the preformed oxide have significant effects on the oxidation resistance enhancement.
机译:研究了在锆合金上形成的预成型氧化物引起的抗氧化性增强机理。几个测试表明,在Zr-1Nb-1Sn-0.1Fe,Zr-1.1Nb-0.05Cu和纯Zr上形成的预形成氧化物增强了后续氧化过程中的抗氧化性。另外,仅在冷却时,预形成的氧化物才增强抗氧化性。基于当前和先前研究的实验结果,评估了已提出的一些假设来证明抗氧化性增强机理。似乎预形成的氧化物中的单斜晶相和孪晶边界对抗氧化性的提高具有显著作用。

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