Corrosion Behavior of Ti60 Alloy under a Solid NaCl Deposit in Wet Oxygen Flow at 600 °C.
Corrosion Behavior of Ti60 Alloy under a Solid NaCl Deposit in Wet Oxygen Flow at 600 °C.
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Ti60 合金在 600°C 湿氧流中固体 NaCl 沉积物下的腐蚀行为
DOI：
10.1038/srep29019
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发表时间：
2016-06-30
影响因子：
4.6
通讯作者：
Wang F
中科院分区：
文献类型：
--
作者：
Fan L;Liu L;Yu Z;Cao M;Li Y;Wang F
用扫描电子显微镜、能谱、X射线光电子能谱、X射线衍射仪、透射电子显微镜和电子探针等分析手段，进一步研究了Ti60合金表面固体氯化钠涂层在600 °C湿氧气氛中的腐蚀行为。结果表明，固体氯化钠和水与钛氧化物反应，破坏了钛氧化膜，生成了无保护作用的Na4Ti5O12等挥发性物质。腐蚀产物膜呈多层状，含有丰富的快速扩散通道，导致快速扩散，提高了腐蚀速率。根据实验结果，提出了氯化钠包覆Ti60合金的可能机制。
The corrosion behavior of Ti60 alloy covered with a solid NaCl deposit in wet oxygen flow at 600 °C has been studied further by SEM, EDX, XPS, XRD, TEM and EPMA analysis. The results show that solid NaCl and H2O react with Ti oxides, which destroyed the Ti oxide scale to yield the non-protective Na4Ti5O12 and other volatile species. The resulting corrosion product scale was multilayered and contained abundant rapid diffusion channels leading to the fast diffusion which improved the corrosion rate. A possible mechanism has been proposed for the NaCl-covered Ti60 alloy, based on the experimental results.