Adhesion and corrosion resistance of polycaprolactone coating on NiTi alloy surface after alkali heat pretreatment

查看全文 作　　者：Zhihui [1,2]Zhang;Yanan [1,2]Yang;Yunting [1,2]Guo;Pengwei [1,2]Sha;Zezhou [1,2]Xu;Zhenglei [1,3]Yu;Jiashun [4]Si;Zhengao [1]Zhang;Jia [1,5]Guo;Yifan [1,3]Chen

机构地区：[1]Key Laboratory of Bionic Engineering,Ministry of Education,Jilin University,Changchun,China;[2]Weihai Institute for Bionic,Jilin University,Weihai,China;[3]State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun,China;[4]Beijing Reserarch Institute of Automation for Machinery Industry Co.,Ltd,Beijing,China;[5]Key Laboratory of Automobile Materials,Ministry of Education,College of Materials Science and Engineering,Jilin University,Changchun,China

出　　处：《Biosurface and Biotribology》索引2022年第8卷第4期,共8页

基　　金：The Natural Science Foundation of Shandong Province,Grant/Award Number:ZR2021QE263;The Open Project Program of Key Laboratory for Cross‐Scale Micro and Nano Manufacturing,Minstry of Education,Changchun University of Science and Technology,Grant/Award Number:CMNM‐KF202109;The Ascl‐zytsxm,Grant/Award Number:202013;The Interdisciplinary Research Fund for Doctoral Postgraduates of Jilin University,Grant/Award Number:101832020DJX052;National Natural Science Foundation of China,Grant/Award Number:51975246;The Program for JLU Science and Technology Innovative Research Team,Grant/Award Number:2019TD‐34;Science and Technology Development Program of Jilin Province,Grant/Award Number:YDZJ202101ZYTS134;The Interdisciplinary Cultivation Project for Young Teachers and Students,Grant/Award Number:415010300078。 摘　　要：Selective laser melting of nickel-titanium alloy(SLM-NiTi)can precisely control the size of the sample molding structure and has attracted extensive attention due to its special superelasticity and shape memory effect.However,the biological inertness and poor corrosion resistance of SLM-NiTi alloy limit their wide application as biomedical implant materials.In this study,polycaprolactone(PCL)coating was prepared on SLM-NiTi alloy by dipping and pulling method,and the effects of alkali heat pretreatment on the morphology,adhesion,corrosion resistance,long-term stability and biomineralisation of the PCL coatings were investigated.The results showed that PCL coating can substan-tially improve the performance of SLM-NiTi alloy,and the PCL coating after alkali heat pretreatment has higher adhesion(increased from 1,747 to 2,498 mN)and lower corrosion current density(reduced by about an order of magnitude compared to PCL coating alone).In addition,the necessary stability,biomineralisation and biocompatibility ability of coatings were also further improved.Therefore,the alkali heat pretreated PCL-coated SLM-NiTi alloy has good application prospects in implants due to its superior properties. 关键词：ADHESION alkali heat pretreatment corrosion resistance PCL coating SLM-NiTi alloy

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Adhesion and corrosion resistance of polycaprolactone coating on NiTi alloy surface after alkali heat pretreatment

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