材料科学技术(英文版)2022，Vol.107Issue(12) ：111-123.

Nanosecond pulsed laser-assisted modified copper surface structure:Enhanced surface microhardness and microbial corrosion resistance

Boxin Wei Jin Xu Liqun Gao Hui Feng Jiajun Wu Cheng Sun Zhenyao Wang Wei Ke
材料科学技术(英文版)2022，Vol.107Issue(12) ：111-123.
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Nanosecond pulsed laser-assisted modified copper surface structure:Enhanced surface microhardness and microbial corrosion resistance

Boxin Wei 1Jin Xu 2Liqun Gao 2Hui Feng 2Jiajun Wu 3Cheng Sun 2Zhenyao Wang 2Wei Ke2
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作者信息

  • 1. School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China;Liaoning Shenyang Soil and Atmosphere Material Corrosion National Observation and Research Station,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
  • 2. Liaoning Shenyang Soil and Atmosphere Material Corrosion National Observation and Research Station,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
  • 3. State Key Laboratory of Robotics,Shenyang Institute of Automation,Chinese Academy of Sciences,Shenyang 110169,China;Institutes for Robotics and Intelligent Manufacturing,Chinese Academy of Sciences,Shenyang 110169,China
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Abstract

Microbiologically influenced corrosion(MIC)is an unavoidable problem in several industries.Copper(Cu)and its alloys are widely used engineering materials.However,MIC of Cu remains a persistent chal-lenge to their performance and functional lifetime under aggressive environments.This study investi-gated nanosecond pulsed laser processing(LP),which may enhance the corrosion resistance of Cu.The microstructural evolution and corrosion behavior of LP-Cu in the presence of sulfate-reducing bacteria(SRB)were evaluated.Typical deformation-induced microstructural features of high-density dislocations were analyzed on the top surface of LP-Cu coupon.Electrochemical measurements suggested that LP-Cu coupons exhibited better corrosion resistance in SRB-inoculated solution compared with their original counterpart.The enhanced corrosion resistance by LP primarily resulted from the combined influences of compressive residual stress and work hardening in the surface.However,overlap percentage played a key role in improving corrosion resistance.LP produced optimal corrosion resistance at 50％overlap.There-fore,this study introduces a unique and an option for anticorrosion control in manufacturing processes and potentially implements it onto other materials to improve its microbial corrosion resistance through LP.

Key words

Pure copper/Laser processing/Microbiologically influenced corrosion/Pitting/Severe plastic deformation

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基金项目

National Science Foundation of China(51871228)

National Science Foundation of China(51771213)

National Science Foundation of China(51471176)

出版年

2022
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
被引量1
参考文献量59
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