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王毓,刘江南,王正品,要玉宏,史志刚,张红军.加氧处理对700℃级超超临界锅炉合金GH2984饱和蒸汽氧化行为的影响[J].稀有金属材料与工程(英文),2018,47(12):3672~3677.[Wang Yu,Liu Jiangnan,Wang Zhengpin,Yao Yuhong,Shi Zhigang and Zhang Hongjun.Oxygenated treatment on Saturated Vapour Oxidation Behaviors of GH2984 Alloys for 700 °C Ultra-supercritical Boilers[J].Rare Metal Materials and Engineering,2018,47(12):3672~3677.]
Oxygenated treatment on Saturated Vapour Oxidation Behaviors of GH2984 Alloys for 700 °C Ultra-supercritical Boilers
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Received:December 27, 2017  Revised:September 29, 2018
DOI:
Key words: GH2984 alloys  Vapour oxidation  Oxygenated treatment  Oxidation film
Foundation item:国家自然科学基金项目(面上项目,重点项目,重大项目)
Author NameAffiliation
Wang Yu,Liu Jiangnan,Wang Zhengpin,Yao Yuhong,Shi Zhigang and Zhang Hongjun  
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Abstract:
      The saturated vapor oxidation behaviors of GH2984 alloys at 750 °C were investigated by oxidation weight increasing method, X-ray diffraction and scanning electronic microscopy in different dissolved oxygen concentrations. The results showed that the oxide film of GH2984 alloys in different dissolved oxygen concentrations was of a single layer consisting of continuous Cr2O3 and disperse or local clustered internal oxidation products of Al2O3 and TiO2. The oxidation weight gain of GH2984 alloys slightly increased with increment of the dissolved oxygen concentrations in water vapor. Oxygenated treatment could accelerate the internal oxidation phenomenon, enhance the oxidation film thickness and make the scattered nodular bulges of Fe2O3 disappear and more Cr-rich nodular bulges form. Moreover, high dissolved oxygen concentrations did not affect the stabilization of Cr2O3 but decrease TiO2 content in the oxide film.