TY - JOUR
T1 - Homogeneously bimodal nanoporous copper by laser processing-dealloying approach
AU - Cui, Mengya
AU - Huang, Ting
AU - Xu, Jiejie
AU - Xiao, Rongshi
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (No. 51975018 ).
Publisher Copyright:
© 2021 The Society of Manufacturing Engineers
PY - 2022/1
Y1 - 2022/1
N2 - Bimodal nanoporous structure shows great potential in a wide variety of applications. So far, however, a scalable fabrication method for bimodal nanoporous structure with controllable morphology and size remains a critical challenge. Herein, we prepare a homogeneously bimodal nanoporous copper which consists of nanoslit and nanopore through combined laser processing and dealloying. The nanoslit and nanopore size can be easily altered by simply controlling the laser processing parameters. With decreased heat input during laser processing, the width of nanoslit decreases from 200 nm to 100 nm and the average size of nanopore decreases from 23.7 to 14.0 nm. The bimodal nanoporous copper is found to be principally influenced by metallurgical reaction during laser-material interaction. Compared with equilibrium-solidified as-cast alloy, phase separation and refined microstructure induced by non-equilibrium solidification through laser processing facilitates corrosion rate during dealloying and induces bimodal nanoporous structure after dealloying.
AB - Bimodal nanoporous structure shows great potential in a wide variety of applications. So far, however, a scalable fabrication method for bimodal nanoporous structure with controllable morphology and size remains a critical challenge. Herein, we prepare a homogeneously bimodal nanoporous copper which consists of nanoslit and nanopore through combined laser processing and dealloying. The nanoslit and nanopore size can be easily altered by simply controlling the laser processing parameters. With decreased heat input during laser processing, the width of nanoslit decreases from 200 nm to 100 nm and the average size of nanopore decreases from 23.7 to 14.0 nm. The bimodal nanoporous copper is found to be principally influenced by metallurgical reaction during laser-material interaction. Compared with equilibrium-solidified as-cast alloy, phase separation and refined microstructure induced by non-equilibrium solidification through laser processing facilitates corrosion rate during dealloying and induces bimodal nanoporous structure after dealloying.
KW - Bimodal
KW - Dealloying
KW - Laser processing
KW - Nanoporous structure
UR - http://www.scopus.com/inward/record.url?scp=85120406355&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85120406355&partnerID=8YFLogxK
U2 - 10.1016/j.jmapro.2021.11.054
DO - 10.1016/j.jmapro.2021.11.054
M3 - Article
AN - SCOPUS:85120406355
VL - 73
SP - 815
EP - 821
JO - Journal of Manufacturing Processes
JF - Journal of Manufacturing Processes
SN - 1526-6125
ER -