压力容器2025，Vol.42Issue(5)：79-84,6.DOI:10.3969/j.issn.1001-4837.2025.05.009
核电用现场金相双模态酸膏腐蚀性能技术及其应用
Dual-mode acid paste etching technology for on-site metallography of nuclear power equipment and its applications
摘要
Abstract
To address the safety hazards and equipment contamination caused by traditional liquid etchants in on-site metallographic testing of nuclear power equipment,a dual-mode acid paste etching technology was developed.This technology includes electrolytic etching paste and coating etching paste,which are suitable for stainless steel and nickel-based materials(electrolytic etching paste)and carbon steel and alloy steel materials(coating etching paste),respectively.By introducing bentonite as a carrier,the etchant was solidified into a paste form,significantly improving operational safety and environmental friendliness.Test results show that after using the new acid paste etchant,the workpiece surface exhibits high cleanliness with no acid residue,and the etching effect is ideal.For example,the microstructures of stainless steel(SA-240 MTP316LN)and carbon steel(SA-508M)materials are clearly revealed with intact grain boundaries.The study confirms that the dual-mode acid paste etching technology combines efficient etching,easy cleaning,and pollution-free characteristics,filling the technical gap in the field of in-situ inspection of nuclear power equipment.This advancement is of great significance for improving the efficiency and safety of nuclear power equipment testing.关键词
双模态酸膏/现场金相/液态腐蚀剂/安全环保Key words
dual-mode acid paste/on-site metallography/liquid etchant/safety and environmental protection分类
机械制造引用本文复制引用
段志伟,刘盛波,敬仕煜,刘素红,镇乐..核电用现场金相双模态酸膏腐蚀性能技术及其应用[J].压力容器,2025,42(5):79-84,6.基金项目
国家重点研发计划项目(2024YFB3713405) （2024YFB3713405）
