焦耳陶瓷电熔炉中电极材料腐蚀问题的研究现状  

Corrosion of Electrode Materials in Joule Heated Melter

作　　者：张克乾 张华[1] 李扬[1] 洪业[1] 贺诚 ZHANG Keqian;ZHANG Hua;LI Yang;HONG Ye;HE Cheng(China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《中国腐蚀与防护学报》2022年第3期458-463,共6页Journal of Chinese Society For Corrosion and Protection

摘　　要：综述了材料、温度、电流三个影响因素对陶瓷电熔炉电极材料在熔融玻璃中腐蚀行为的影响。熔融玻璃中,Inconel 693样品表面会形成一层致密的α-Al_(2)O_(3)膜,耐腐蚀性比Inconel 690更好;随着温度的变化,材料内部Cr扩散速率和表面Cr_(2)O_(3)溶解速率的变化决定了材料的腐蚀速率;在有电流存在的情况下,Inconel 690和693合金在熔融玻璃中钝化膜被破坏,耐腐蚀性变差。提出了应进一步结合电熔炉实际运行工况来研究材料的腐蚀行为及机理。The corrosion of ceramic furnace electrode materials in molten glass is discussed from three aspects:material,temperature and applied current.The results show that Inconel 693 forms an Al_(2)O_(3) scale in molten glass.The corrosion resistance of Inconel 693 is better than that of Inconel 690.With the change of temperature,the corrosion rate of the material is determined by the Cr diffusion rate inside the material and the Cr_(2)O_(3) dissolution rate on the surface.In the presence of electric current,the passive film of Inconel alloy in molten glass is destroyed and its corrosion resistance becomes poor.It is also suggested that the corrosion behavior and the relevant corrosion mechanism of materials should be investigated in combination with the practical operation conditions of JHM in the future.

关 键 词：电极材料 腐蚀行为 熔融玻璃 陶瓷电熔炉 

分 类 号：TG172[金属学及工艺—金属表面处理]