Influence of Micro-Nano α-Al2O3 Modified Acrylic Resin-Organosilane Composite Passivation Solution on Hardness and Corrosion Resistance of Stainless Steel

FU Jiankang, MA Changshuai, RAN Changrong, WANG Yunhou, GUO Taixiong, ZHANG Qianfeng

doi:10.16577/j.issn.1001-1560.2024.0104

2024 , Vol. 57 >Issue 5: 76 - 82

DOI: https://doi.org/10.16577/j.issn.1001-1560.2024.0104

Influence of Micro-Nano α-Al₂O₃ Modified Acrylic Resin-Organosilane Composite Passivation Solution on Hardness and Corrosion Resistance of Stainless Steel

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(1. Institute of Molecular Engineering and Applied Chemistry，Anhui University of Technology，Ma’anshan 243002，China；2. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization，Pangang Group Research Institute Co.，Ltd.，Panzhihua 617000，China)

ZHANG Qianfeng(1966-)，Ph.D.，Professor，Research Focus: Applied Materials Chemistry，E - mail: zhangqianfeng@ ahut.edu.cn

Received date: 2023-08-16

Revised date: 2023-10-24

Accepted date: 2023-10-30

Online published: 2024-05-31

Supported by

The Collaborative Research and Development Project Among Universities，Enterprises，and Research Institutes(MS2013019)

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Abstract

The chromium-free passivation liquid composed of micro-nano α-Al₂O₃ modified acrylic resin-organosilane was applied to the surface of the stainless steel substrate, for exploring the impact of the micro-nano α-Al₂O₃ passivation film formed on the surface of the stainless steel on the surface properties of the stainless steel. The surface characteristics of the substrate through surface hardness testing and scanning electron microscopy testing were analyzed. Meanwhile, the bonding strength of the coating and the corrosion resistance of the substrate were explored through coating adhesion test and electrochemical test. Results showed that the chromium-free passivation liquid modified by micro-nano α-Al₂O₃ significantly improved the corrosion resistance of stainless steel plates, and the surface hardness was increased by 80%.

Key words： micro-nano α-Al₂O₃; ; chromium-free passivation; ; modified acrylic resin-organosilane; ; stainless steel substrate; ; hardness; ; corrosion resistance

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FU Jiankang, MA Changshuai, RAN Changrong, WANG Yunhou, GUO Taixiong, ZHANG Qianfeng . Influence of Micro-Nano α-Al₂O₃ Modified Acrylic Resin-Organosilane Composite Passivation Solution on Hardness and Corrosion Resistance of Stainless Steel[J]. Materials Protection, 2024 , 57(5) : 76 -82 . DOI: 10.16577/j.issn.1001-1560.2024.0104

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