| WANG Yan-wei,ZHU Guang-ming,ZHAO Pi-yang,MIN Fan-lei,CAO Xiao-lin,DING Ming-kai,YIN Ji-li,ZHAI Xiao-qing,GUO Na-na.Effects of Aging Temperature on Super-hydrophilic Stability of Chemical Etching 304 Stainless Steel[J],47(1):27-32 |
| Effects of Aging Temperature on Super-hydrophilic Stability of Chemical Etching 304 Stainless Steel |
| Received:July 18, 2017 Revised:January 20, 2018 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2018.01.005 |
| KeyWord:super-hydrophilic chemical etching chemical oxidation stainless steel aging temperature |
| Author | Institution |
| WANG Yan-wei |
School of Mechanical Engineering, Shandong University of Technology, Zibo , China |
| ZHU Guang-ming |
School of Mechanical Engineering, Shandong University of Technology, Zibo , China |
| ZHAO Pi-yang |
School of Mechanical Engineering, Shandong University of Technology, Zibo , China |
| MIN Fan-lei |
School of Mechanical Engineering, Shandong University of Technology, Zibo , China |
| CAO Xiao-lin |
School of Mechanical Engineering, Shandong University of Technology, Zibo , China |
| DING Ming-kai |
School of Mechanical Engineering, Shandong University of Technology, Zibo , China |
| YIN Ji-li |
School of Mechanical Engineering, Shandong University of Technology, Zibo , China |
| ZHAI Xiao-qing |
School of Mechanical Engineering, Shandong University of Technology, Zibo , China |
| GUO Na-na |
School of Mechanical Engineering, Shandong University of Technology, Zibo , China |
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| Abstract: |
| The work aims to study stability of hydrophilic surface wettability as a function of aging temperature by preparing micro-nano structures and realizing super-hydrophilicity on the surface of 304 stainless steel by chemical etching and chemical oxidation. An etching solution was obtained by mixing 2 mol/L FeCl3 solution, HCl and H2O2 in a volume ratio of 15:1:1. Contact angle, micro-nano surface morphology and surface elements of the sample were characterized with contact angle measuring instrument, field emission scanning electron microscope and self-contained energy dispersive spectrometer, and change rule of wettability in different treatment conditions was analyzed. The super-hydrophilic surface could be obtained by chemical etching and chemical oxidation on the 304 stainless steel substrate with intrinsic wetting angle of 45°. Super-hydrophilicity of the sample could be maintained for a certain period of time at normal temperature. Wettability of the super-hydrophilic surface changed after aging treatment at high temperature, and the super-hydrophilicity was recovered after aging treatment at 400 ℃. The method facilitates preparation of micro-nanostructure on stainless steel surface of corrosion resistant substrate, and has effects on wettability of substrate surface. |
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