激光诱导表面改性下中子源靶钽涂层的腐蚀防护机制研究

王雅茹; 张凡曦; 陈晨; 陈诗熹; 司怡昕; 胡耀程; 谢宇鹏; 王盛

doi:10.7652/xjtuxb202611018

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激光诱导表面改性下中子源靶钽涂层的腐蚀防护机制研究

更新时间：2026-11-09

- 激光诱导表面改性下中子源靶钽涂层的腐蚀防护机制研究
- Study on the Corrosion Protection Mechanism of Tantalum Coatings on Neutron-Source Targets with Laser-Induced Surface Modification
- 西安交通大学学报 2026年60卷第11期页码：203-212
- 作者机构：
  
  西安交通大学核科学与技术学院，710049，西安
  西安交通大学湖州中子科学实验室，313000，浙江湖州
  华硼中子科技（杭州）有限公司，310000，杭州
  西安交通大学国家医学攻关产教融合创新平台（中心），710049，西安
- 作者简介：
  
  王雅茹（1999—），女，博士生；
  谢宇鹏（通信作者），男，助理教授。
- 基金信息：
  
  国家自然科学基金资助项目(12505176;12375159);国家资助博士后研究人员计划和中国博士后科学基金资助项目(BX20250270)
- DOI：10.7652/xjtuxb202611018
  中图分类号： TB37
- 收稿：2026-01-25，
  
  网络首发：2026-06-23，
  
  纸质出版：2026-11-10
- 稿件说明：
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王雅茹, 张凡曦, 陈晨, 等. 激光诱导表面改性下中子源靶钽涂层的腐蚀防护机制研究[J/OL]. 西安交通大学学报,2026,60 (11):203-212. https://doi.org/10.7652/xjtuxb202611018.

WANG Yaru, ZHANG Fanxi, CHEN Chen, et al. Study on the Corrosion Protection Mechanism of Tantalum Coatings on Neutron-Source Targets with Laser-Induced Surface Modification[J/OL]. Journal of Xi'an Jiaotong University,2026,60 (11):203-212. https://doi.org/10.7652/xjtuxb202611018.
王雅茹, 张凡曦, 陈晨, 等. 激光诱导表面改性下中子源靶钽涂层的腐蚀防护机制研究[J/OL]. 西安交通大学学报,2026,60 (11):203-212. https://doi.org/10.7652/xjtuxb202611018. DOI：

WANG Yaru, ZHANG Fanxi, CHEN Chen, et al. Study on the Corrosion Protection Mechanism of Tantalum Coatings on Neutron-Source Targets with Laser-Induced Surface Modification[J/OL]. Journal of Xi'an Jiaotong University,2026,60 (11):203-212. https://doi.org/10.7652/xjtuxb202611018. DOI：

摘要

针对小型加速器硼中子俘获治疗（AB-BNCT）靶系统铜基板冷却通道在水环境中易腐蚀失效的问题，提出激光诱导表面改性（LM）与磁控溅射Ta涂层相结合的复合防护策略。以原始铜基材（Cu）、激光诱导表面改性铜基板（LM-Cu）及钽涂层复合激光诱导表面改性铜基板（Ta/LM-Cu）作为研究对象，在去离子水中开展28 d分阶段浸泡腐蚀实验，并采用扫描电子显微镜、激光扫描共聚焦显微镜、X射线衍射、X射线光电子能谱、电感耦合等离子体质谱评估其腐蚀行为。结果表明：Cu和LM-Cu均发生明显局部腐蚀，其中激光改性形成的沟槽结构增大了表面反应面积，促进点蚀萌生及腐蚀产物沉积；Ta/LM-Cu表面涂层保持较好完整性，腐蚀后以稳定Ta

钝化层为主，并显著抑制Cu离子释放；28 d时，其Cu离子质量浓度为4.70 mg·L

-1

，低于Cu和LM-Cu的7.26、7.04 mg·L

-1

。Ta涂层通过物理屏障和钝化作用有效延缓铜基体溶解，可提升AB-BNCT靶系统冷却通道的服役稳定性。

Abstract

To address the issue of corrosion failure of copper substrate cooling channels in the target system of accelerator-based boron neutron capture therapy (AB-BNCT ) in aqueous environments

a composite protection strategy combining laser-induced surface modification (LM) and magnetron sputtered Ta coating is proposed.Pristine copper (Cu )

laser-modified copper (LM-Cu)

and Ta-coated laser-modified copper (Ta/LM-Cu) substrates were subj ected to a 28 d staged immersion corrosion test in deionized water.The corrosion behavior was evaluated using scanning electron microscopy (SEM)

laser scanning confocal microscopy (LSCM)

X-ray diffraction (XRD)

X-ray photoelectron spectroscopy (XPS)

and inductively coupled plasma mass spectrometry (ICP-MS) .The results indicate that both Cu and LM-Cu undergo significant localized corrosion.The grooved structures formed by laser modification increases the surface reaction area

promoting the initiation of pitting corrosion and the deposition of corrosion products.In contrast

the surface coating of Ta/LM-Cu maintains good integrity

and following the corrosion test

its surface is predominantly composed of a stable Ta

passivation layer

which significantly inhibits the release of Cu ions. At 28 d

the Cu ion concentration is 4.70 mg·L

-1

which is lower than the 7.26

and 7.04 mg·L

-1

observed for Cu and LM-Cu

respectively.The Ta coating effectively delays the dissolution of the copper substrate through a physical barrier mechanism and passivation effects

which can enhance the service stability of the cooling channels in the AB-BNCT target system.

关键词

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