王兴平,魏克俭,廖斌,关浩浩,陈琳,杜建成,徐驰,薛文斌.锆表面磁过滤阴极真空弧离子镀Cr涂层高温蒸汽氧化行为研究[J].稀有金属材料与工程,0,():-.[Wang Xingping,Wei Kejian,Liao Bin,Guan Haohao,Chen Lin,Du Jiancheng,Xu Chi,Xue Wenbin.High Temperature Steam Oxidation Behavior of Cr-coated Zr Fabricated by Filtered Cathodic Vacuum Arc Ion Deposition[J].Rare Metal Materials and Engineering,0,():-].
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锆表面磁过滤阴极真空弧离子镀Cr涂层高温蒸汽氧化行为研究
投稿时间:2020-05-30  修订日期:2020-06-25
中文关键词:  纯锆  磁过滤阴极真空弧离子镀  Cr涂层  高温蒸汽氧化  氧化动力学
基金项目:核材料创新基金(ICNM-2020-YZ-04),北京市自然科学基金(2172029)和国家自然科学(51671032)
中文摘要:
      采用磁过滤阴极真空弧离子镀(FCVAD)技术在纯锆表面制备了厚度约为4 μm的Cr金属层,对比研究了它们在不同温度水蒸汽环境中的氧化行为,并利用XRD、XPS、SEM及EDS分析了Cr涂层及氧化膜的物相组成、微观结构及成分分布。结果表明,在900℃、1000℃和1100℃水蒸汽环境中,镀Cr涂层大幅度降低了锆的氧化速率,其单位面积氧化增重仅为同一温度下锆基体的1/4、1/6和4/9。氧化初期,Cr涂层表面生成一层均匀致密的Cr2O3膜,当Cr层被消耗完后,Cr2O3/Zr界面上部分Cr2O3被Zr还原成金属Cr,锆基体氧化生成ZrO2。镀Cr涂层样品的氧化激活能达293.17 kJ/mol。
High Temperature Steam Oxidation Behavior of Cr-coated Zr Fabricated by Filtered Cathodic Vacuum Arc Ion Deposition
英文关键词:Pure zirconium  Filtered cathodic vacuum arc ion deposition  Cr coating  High-temperature steam oxidation  Oxidation kinetics
英文摘要:
      A Cr coating of about 4 μm thick was successfully prepared on pure zirconium by filtered cathodic vacuum arc ion deposition technology (FCVAD), and the high-temperature oxidation properties of bare and Cr-coated Zr were measured using a thermogravimetric analyzer (TGA) in steam environment at different temperatures. Their phase composition, microstructure and composition distributions before and after the steam oxidation tests were characterized by X-ray diffraction analyzer (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDS). It was found that the mass gain per unit area of Cr-coated Zr was only 1/4, 1/6 and 4/9 of that of bare Zr after 3600 s exposure in 900, 1000 and 1100℃ steam environment, respectively. In the initial stage of steam oxidation, a compact and uniform Cr2O3layer was formed on the surface of Cr layer, significantly reducing oxygen or steam diffusion inwards. After Cr coating was completely oxidized into Cr2O3, Zr substrate was gradually oxidized, but the Cr2O3 at Cr2O3/Zr interface was reduced to form Cr. In addition, the oxidation activation energy of the Cr-coated Zr was up to 293.17 kJ/mol.
作者单位
王兴平 北京师范大学核科学与技术学院射线束技术教育部重点实验室 
魏克俭 北京师范大学核科学与技术学院射线束技术教育部重点实验室 
廖斌 北京师范大学核科学与技术学院射线束技术教育部重点实验室 
关浩浩 北京师范大学核科学与技术学院射线束技术教育部重点实验室 
陈琳 北京市辐射中心 
杜建成 北京师范大学核科学与技术学院射线束技术教育部重点实验室 
徐驰 北京师范大学核科学与技术学院射线束技术教育部重点实验室 
薛文斌 北京师范大学核科学与技术学院射线束技术教育部重点实验室 
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