焦耳陶瓷电熔炉中电极材料腐蚀问题的研究现状

doi:10.11902/1005.4537.2021.118

中国腐蚀与防护学报

2022, Vol. 42

Issue (3): 458-463 DOI: 10.11902/1005.4537.2021.118

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焦耳陶瓷电熔炉中电极材料腐蚀问题的研究现状

张克乾, 张华(

), 李扬, 洪业, 贺诚

中国原子能科学研究院北京 102413

Corrosion of Electrode Materials in Joule Heated Melter

ZHANG Keqian, ZHANG Hua(

), LI Yang, HONG Ye, HE Cheng

China Institute of Atomic Energy, Beijing 102413, China

全文: PDF(3710 KB) HTML

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-Al₂O₃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Cr₂O₃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。

关键词 ：电极材料, 腐蚀行为, 熔融玻璃, 陶瓷电熔炉

Abstract：

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 Al₂O₃ 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 Cr₂O₃ 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.

Key words： electrode material corrosion behavior molten glass joule heated melter

收稿日期: 2021-05-26

ZTFLH:

TG172

通讯作者: 张华 E-mail: zhanghua_32@ciae.ac.cn

Corresponding author: ZHANG Hua E-mail: zhanghua_32@ciae.ac.cn

作者简介: 张克乾，男，1991年生，博士，副研究员

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引用本文:

张克乾, 张华, 李扬, 洪业, 贺诚. 焦耳陶瓷电熔炉中电极材料腐蚀问题的研究现状[J]. 中国腐蚀与防护学报, 2022, 42(3): 458-463.
Keqian ZHANG, Hua ZHANG, Yang LI, Ye HONG, Cheng HE. Corrosion of Electrode Materials in Joule Heated Melter. Journal of Chinese Society for Corrosion and protection, 2022, 42(3): 458-463.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2021.118 或 https://www.jcscp.org/CN/Y2022/V42/I3/458

图1 Inconel 625合金在熔融硼硅酸盐玻璃中的腐蚀[4]

表1 Inconel 690与Inconel 693合金成分对比[5]

图2 Inconel 690和Inconel 693合金腐蚀表面SEM微观图[12]

图3 Inconel 693合金在硼硅酸盐熔融玻璃中的腐蚀[13]

图4 Inconel 693合金在1000 ℃铁磷酸盐玻璃中腐蚀7 d的SEM像[5]

图5 Inconel 690和Inconel 693合金在1050 ℃铁磷酸盐玻璃中腐蚀7 d的SEM像[5]

图6 Inconel 693合金在铁磷酸盐玻璃溶液中的腐蚀SEM像[18]

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