Corrosion Behavior of Pure Ti under a Solid NaCl Deposit in a Wet Oxygen Flow at 600 °C
Corrosion Behavior of Pure Ti under a Solid NaCl Deposit in a Wet Oxygen Flow at 600 °C
复制标题
纯钛在 600°C 湿氧流中固体 NaCl 沉积物下的腐蚀行为
DOI：
10.3390/met6040072
复制
发表时间：
2016-04-01
期刊：
影响因子：
2.9
通讯作者：
Wang, Fuhui
中科院分区：
文献类型：
--
作者：
Fan, Lei;Liu, Li;Wang, Fuhui
研究了纯钛在600 ℃湿氧气流中固体NaCl存款下的腐蚀行为。结果表明，固体NaCl大大加速了腐蚀速率，破坏了致密的保护性TiO 2膜，生成了非保护性的N4 Ti 5 O 12等产物。扫描电子显微镜（SEM）、能谱仪（EDX）和X射线衍射（XRD）分析表明，在腐蚀过程中，金属（Ti）迅速向外扩散，并与湿O2-反应形成了厚而多孔的腐蚀产物膜。在600 ℃的整个腐蚀过程中还观察到电化学反应，这进一步加速了腐蚀速率。根据实验结果，提出了纯钛在600摄氏度湿氧气中覆盖固体氯化钠存款的可能机制。
The corrosion behavior of pure Ti under a solid NaCl deposit in a wet O-2 flow at 600 degrees C has been studied. The results showed that the corrosion rate was greatly accelerated by solid NaCl, which destroyed the compact and protective TiO2 scale to yield non-protective N4Ti5O12 and other products. Detailed scanning electron microscopy (SEM) equipped with an energy dispersive spectrometer (EDX), and X-ray diffraction (XRD) analysis showed that, during the corrosion process, the metal (Ti) diffused outward rapidly and reacted with the wet O-2 to form a thick and porous corrosion products scale. The electrochemical reaction was also observed during the whole corrosion process at 600 degrees C, which further accelerated the corrosion rate. A possible mechanism has been proposed for pure Ti covered with a solid NaCl deposit in wet O-2 at 600 degrees C, based on the experimental results.